The control of black goji berry diseases and insect pests is one of the main contents of the management of wolfberry orchards. Although the yield and quality of black goji berries are closely related to varieties and fertilizers, the key to achieving the purpose of safety, high quality and high yield depends on the level of control of diseases and insect pests. In the harmless production of black goji berries, the prevention and control of diseases and insect pests should be mainly prevention, and prevention and control should be combined. Biological control is the mainstay, supplemented by chemical control, to protect natural enemies and beneficial microorganisms, and maintain ecological balance. On the basis of improving the resistance of goji berries to diseases and insects, agricultural, biological and physical control methods are given priority. Only when biological control and agricultural control means are rampant in wolfberry diseases and insect pests, can not be fully effective, you can consider the use of some high-efficiency, low-toxicity and low-residue chemical pesticides, at the same time, strictly grasp the time, concentration and frequency of medication, targeted spraying when the harm is serious, and it is best to use it alternately with biological pesticides, minimize the dosage of chemical pesticides, and control the harm of diseases and insects within the allowable range of economic losses.
First, the main diseases and insect pests and their comprehensive prevention technology
(1) Black goji berry aphid
It belongs to the aphid family, and is also called green honey, honey worm and oil sweat in production. All areas with goji berry cultivation have the harm of wolfberry aphids, wolfberry aphids have a long harmful period and rapid reproduction, which is one of the key pests in the production of wolfberries.
1. Morphological characteristics and hazard symptoms:
The genus is incompletely metamorphosed , with eggs , nymphs and adults. There are two types of adults, winged aphids and wingless aphids. Body green to dark green Body light green to dark green. Goji berry aphids often cluster young shoots, flower buds, young fruits and other young parts with more sap to suck up sap hazards, causing the victim branches to shrink, stagnate growth, and the victim buds fall off; the victim young fruits cannot expand normally when ripe. In severe cases, the leaves of goji berries are all covered by the "feces" of aphids, and the oil shines, which directly affects the photosynthesis of the leaves, resulting in a large number of leaves, flowers, fruits, and premature aging of the plants, resulting in a significant reduction in yield.
2. Occurrence law: The black wolfberry aphid overwinters in the gap of the wolfberry branch with eggs, and when the spring shoots begin to twitch, the eggs hatch as dry mothers. The first generation of adult insects reproduces 2 to 3 generations after the emergence of winged aphids, and the population density is the largest from mid-May to early July and mid-July. Mid- to late June is the peak of aphid pests. Eggs are laid in late October overwintering in the gaps in the branches.
The latest research results on the occurrence of black wolfberry aphids are: the starting temperature of development is 8.9 °C, the average temperature of the day reaches 8.9 °C, and the dry mother begins to appear. It usually occurs in late April. Goji aphids need an effective accumulated temperature of 88.36 °C per generation. That is, goji aphids develop from eggs to adults, which accelerate with the rise of temperature. In early and mid-May, each generation takes about 15 days, while from late June to early July, each generation lasts only about 5 days. The average daily temperature of 20 ° C is the peak period for the appearance of winged aphids, and after the peak period, due to the reproduction of all parthenogenesis, there is a peak period of harm in production for about 15 days.
3. Comprehensive prevention and control technology:
(1) Seize the key prevention and control period. The occurrence law of black wolfberry aphid has a clear trend of change, so in the prevention and control, according to its occurrence and development characteristics, we should pay attention to the prevention and control of the dry mother incubation period, the early stage of winged aphids and the overwintering generation spawning period.
(2) Make full use of agricultural prevention and control measures. Because the overwintering eggs of black wolfberry aphids are laid in the gaps of the branches, and often clustered in the branches and young shoots during the production season, especially before the winged aphids appear, there are the characteristics of wolfberry aphids concentrated in the young shoots of the branches, so the full use of agricultural measures in the control can play a multiplier effect.
(1) Make full use of pruning measures:
A. The pruned branches and dry weeds of the goji berry garden during the dormancy period are concentrated and burned out of the garden to reduce the overwintering base.
B, timely summer pruning, goji aphids before the end of May, mainly concentrated in the long branches, root seedlings and strong branches of the young shoots, through timely thinning of the long branches, root seedlings and short strong branches, taken out of the garden to burn, not only reduce the growth season of the insect population density, but also improve the prevention effect.
(2) The use of water and fertilizer measures, mainly pay attention to the application of organic fertilizer, increase the application of phosphorus and potassium fertilizer, and appropriately control the number of irrigation, so that the wolfberry tree body is strong but not strong, improve the insect resistance of the tree.
(3) Reasonable selection of pesticides: the selection of high-efficiency and low-toxicity chemical and biological pesticides for prevention and control, in the production is often combined with the prevention and control of goji rust mites and gall mites for mixed control. The main agents and multiples of use are:
(1) 2.5% Kung Fu 2000 ~ 3000
(3) 10% imidacloprid 1000 ~ 1500 times liquid
(4) 75% Aimela 8000 ~ 10000 times liquid
(5) 3% acetamidine 25
(9) 3.4% matrine 800 ~ 1200 times liquid
When using these agents, it is necessary to adhere to the rotation of drugs, strictly control the concentration of use to slow down resistance and improve the prevention and control effect.
(4) The introduction and protection of natural enemies, in the production of natural enemies of wolfberry aphids have obvious inhibitory effect.
(2) Black goji berry psyllid
It belongs to the order Homoptera, the family Pyllidaceae, also known as pig's mouth honey and jaundice, and is one of the important pests in the production of goji berries.
1. Morphological characteristics and hazard symptoms: adult insects are black and brown, resembling small cicadas with a length of 2 mm. Eggs: Oblong, laid on the front and back of the leaf, connected by a filament stalk. The nymphs are flattened and shaped like shields, and both adult and nymphs use sucking mouthparts into the young shoots of goji berries, and the epidermal tissue of the leaves sucks the sap, causing the tree to weaken. In severe cases, adult insects and nymphs are all harmful to old leaves, new leaves and branches, and gray-white powder feces can be observed under the tree, resulting in serious weakening of the whole tree, browning of leaves, dry leaves, greatly reduced yield, serious degradation of quality, etc., the most serious time caused by the death of young trees in 1 to 2 years; the fruit branches or backbone branches of adult trees are all dried up in the early spring of the following year.
2. Occurrence law: Black wolfberry pyllid overwinters as adults in the canopy, soil cracks, under bark, under fallen leaves, and dry grass. In the following year, when the temperature is higher than 5 °C, the sting hazard begins. Generally in late March, the adult insects do not lay eggs before the goji berries germinate, only suck the sap of the fruit branches to supplement nutrition, often lie still in the sun of the lower branches, and are inactive when it is cold. After the goji berries germinate, they begin to lay eggs, and the hatched nymphs break the egg shell from the top of the egg, climb along the egg stalk to the leaves, and the nymphs all attach to the leaves to suck the leaf juice, and the adults continue to lay eggs after feathering. , the time to complete each generation is about 35 days, from which it can be judged that the psyllid occurs in 5 generations a year,
(1) Agricultural measures: Black wolfberry lice mainly overwinter in the soil cracks under the canopy, under the leaves, and in the dry grass, and the leaves and dead grasses in the wolfberry garden are centrally removed in early March every year, which has a great relationship with the reduction of the base of the overwintering generation.
(2) Grasp the key control period: black wolfberry psyllid is the earliest pest of all pests of wolfberry, generally out of the stinging period, wolfberry has not yet spread leaves, firmly grasp this control period, choose the right road pesticide, can completely control the total amount of wood lice throughout the year. Grasping the key prevention and control period is one of the two key technologies for the prevention and control of goji berry lice.
(3) Reasonable selection of pesticides: the selection range of pesticides by black wolfberry lice is small, the general resistance of wolfberry wood lice is slower, and the selection of a pesticide can be used for 3 to 5 years, such as killing and controlling wolfberry lice with the enemy for up to 5 to 7 years.
In the production, due to the control of some agents for the control of goji berry aphids can also treat pygosics, when the early spring budding period of the good control of wood lice in the wolfberry garden, in the production season spraying aphids, emela, imidacloprid, Aktai and other agents can achieve the purpose of controlling pygosites. Based on the results of recent tests on psyllids, several agents and others are introduced
(2) 1.8% Yili gram lice 5000~6000 times liquid(3)
(4) 1.8% avermectin 3000 times liquid
(5) 28% moth lice net emulsion
(3) Black goji berry rust mites
Black wolfberry rust mite is a new species of rust mite found in the 1980s and identified in the 1980s, which has a great impact on yield and quality, and is a pest mite that is the key control in the production of black wolfberry.
1, morphological characteristics and hazard symptoms: black wolfberry rust mite body state is very small, the body resembles the carrot in the carrot shape, mainly distributed on both sides of the main vein at the base of the leaf back, since the mite began to pierce the mouth needle into the leaf, suck the leaf juice, so that the leaf nutritional conditions deteriorated, photosynthesis decreased, the leaf became hard, thickened, brittle, elastic weakened, the leaf color became rust color. In severe cases, the old leaves and new leaves of the whole tree are killed by the epidermal cells of the leaves, the leaves lose green, the leaf surface becomes rust-colored, the photosynthetic ability is lost, and all fall off in advance, only branches, no leaves. Then there is a large number of flowers and fruits, which can generally cause a reduction of about 60% in production. 1
2. Occurrence law: black wolfberry rust mites overwinter in clusters at the eye of the shoot buds. In early April in the spring, goji berries sprout, adult mites begin to sting, migrate to the leaves for harm, and lay eggs in late April, the eggs develop into the original female, and the original female is bred. Before the rust leaves fall off, the mites and mites move to the eye of the shoot buds for more summer. After the emergence of new leaves in autumn, adult mites and nymphs migrate to new leaves to harm and breed offspring, and the temperature drops to about 10 °C in mid- and late October, and adult mites climb from the leaf surface to the eye of the shoots and overwinter in groups.
Black wolfberry rust mites from egg development to adult mites, completing an average of 12 days a generation, life history observes that wolfberry rust mites have two breeding peaks a year, namely the large peak in June and July and the small peak in August and September
(1) Agricultural prevention and control measures: sooner or later and the severity of the occurrence of black wolfberry rust mites, in the production and agricultural measures have a strong relationship, the use of agricultural measures, to reduce the harm of wolfberry rust mites has an obvious effect.
(1) Black wolfberry rust mites overwinter in clusters at the eye of the shoot buds, and the habit of using the goji rust mites to gather on the fruit branches to overwinter in the production, thinning the diseased stumps during the dormancy period, short pruning of fruit branches, and reducing the base number of overwintering rust mites.
(2) Choose to plant anti-mite varieties, such as cannabis leaf superior line, Ningqi No. 1.
(3) Increase the application of organic fertilizer, reasonable combination of phosphorus and potassium fertilizer, enhance tree potential, improve the ability of tree body to tolerate mites.
(4) Build a new goji berry garden to avoid cottages and large trees.
(5) Grasp the key prevention and control period: the prevention and control of rust mites should grasp both ends and prevent the middle. Grasp two ends: one is to grasp the early stage of spring stinging, prevention and treatment in mid-to-late April; the other is to grasp the prevention and treatment before entering the sting in mid-to-late October. Anti-intermediate: Mainly to prevent the breeding peak before the beginning of June and the transition period of summer out of summer in mid-August.
(2) Chemical control:
(1) Before wintering in mid-to-late October, use 3 to 5 degrees stone sulfur compound, and in mid-to-late April, use 50% bromomerate emulsion 4000 times or red and white mite rust 2000 to 2500 times for prevention and control during the stinging period.
(2) In the production season, 45 to 50% sulfur glue suspension is selected 120 to 150 times; or 20% bimethylamidine 2000 to 3000 times; or pyridoxine 2000 to 2500 times.
(4) Black goji berry gall mite
It belongs to the order Tick Mites, Gall Mites. The victims are mole-like galls, and the mites mostly live in the galls. In general, the control effect is worse than that of rust mites, and the losses caused are lighter than those caused by rust mites.
1. Morphological characteristics and harmful symptoms: The black wolfberry gall mite is very small, and only its harmful symptoms can be directly seen. The mites resemble the carrot type in carrots, and the goji gall mites harm the leaves, young shoots, buds, and young fruits of the goji berries, and the victim part becomes a blue-black mole-like gall and makes the tissue bulge. Strict curves, can not grow normally, flower buds can not flower and bear fruit.
2, the occurrence of the law: black wolfberry gall mite is an old mature female mite in the wolfberry of the year and 2 years of the overwintering buds, scales and branches of the gap overwintering, in the middle of April and the end of the following year, when the wolfberry branches spread leaves, the adult mites migrate from the overwintering place to the leaves to lay eggs, after hatching, if the mite drills into the leaves of the wolfberry to cause gall. In mid-to-late May, the new shoots of the seven-inch branches entered the rapid growth stage, and the gall mites on the old eye leaves crawled out of the gall and crawled to the seven-inch branches, and from this time to mid-June, it was the first breeding hazard period. In mid-to-late August, the autumn shoots began to grow, and the gall mites shifted from the spring seven-inch leaves to the autumn seven-inch branches, and reached the second hazard peak in September. It goes dormant in mid-to-late October.
3, comprehensive control technology: black wolfberry gall mite and wolfberry rust mite belong to the same family of pest mites, control agents, concentration, time is basically consistent with the prevention and control of rust mites, with the prevention and control of rust mites for the prevention and control of gall mites can achieve the purpose of control.
(5) Red gall mosquitoes of black wolfberry
The black wolfberry red gall mosquito is a pest that specifically harms the young buds of wolfberry. Young buds that are harmed by it lose the ability to flower and bear fruit. In the past 20 years in production, in the Ningxia production area, the prevalence of occurrence and the economic losses caused by it have become more and more serious, and there is a trend of aggravation.
1. Morphological characteristics and hazard symptoms: resembling a small mosquito. Eggs: colorless or pale orange, often 10 to 20 grains are produced in the top of the young buds. The larvae are colorless at first instar, and as they mature, they stop orange-red, flattened, pupa: black-red in the soil under the canopy. The young buds that are laid by the red gall mosquitoes, after the eggs hatch, the larvae begin to bite the young buds, and the young buds after being bitten gradually show deformity symptoms. Early young buds do not develop significantly longitudinally, and laterally develop obviously, and the endangered young buds become rounded and brightened, making the buds swell into galls. Later flowers are thickened, torn unevenly, dark green, unable to flower, and finally withered and dried up.
2. Occurrence law:
The starting temperature of the development of The wolfberry Red Gall Mosquito is 7 °C, and the approximate time in Ningxia is April 10 to 15. Each completed generation of The Wolfberry Red Gall Mosquito requires an effective accumulated temperature of 347.5 °C, and the number of generations to occur in Ningxia is about 6 generations throughout the year. It takes about 22 to 27 days per generation, that is, 2 days after feathering to lay eggs, 2 to 4 days, 11 to 13 days for larval harm, and 7 to 8 days for pupal. Except for the first generation, which is well developed, the generational alternation of the other generations is more obvious.
(1) Agricultural measures:
(1) Prune the dead fruit branches or pick the dead young buds. Generally, the symptoms of pest damage in the wintering generation in mid-May are already obvious, and the mature larvae have not yet fallen into the soil as a cocoon, so we must seize this favorable opportunity. In the occurrence of heavy, large area of wolfberry orchards, producers can take the way to cut off the old eye branches and branches of the victims; the producers of the wolfberry orchards that occur in heavy and small areas can take the removal of harmful young buds with obvious symptoms, which has a significant effect on reducing the base number of the first generation of insect mouths.
(2) Irrigation during the feathering period can inhibit the feathering rate by 20 to 40%.
(2) Grasp the key control period: The most critical period for the control of goji berry red gall mosquito is the feathering period of adults in the overwintering generation.
(3) Chemical control: ground control is the mainstay, supplemented by canopy control, and the focus of ground control is to do a good job in the prevention and control of overwintering mature larvae before feathering and the control of the remaining generations of larvae before they fall into the soil to adults.
(1) Ground control agent: 40% octyl thiophos emulsion, 600 ml per 667 square meters or 5% octyl thiophos granules per 667 square meters 2.5 to 3 kg or 40% chlorpyrifos per 667 square meters 500 to 600 ml or 50% acetamephos per 667 square meters 500 to 600 ml mix fine wet soil 60 to 100 kg, stuffy 10 to 12 hours, sprinkle in the garden, sprinkle more points under the canopy, and fill water in time after sprinkling.
(2) Canopy control is selected for control during the spawning period of adult insects according to the development cycle of Red Gall Mosquito. The agent has 40% chlorpyrifos 700 times plus 10% imidacloprid 1500 times or 40% chlorpyrifos 700 times plus 50% acetylmephos 800 times or 30% alfarate 1000 to 1500 times.
(6) Black goji berries negative mud worms
It generally occurs intermittently or non-existently in old production areas, and is a frequent pest in areas of new development of goji berries, especially in areas of new development of deserts. Adults and larvae nibble on the leaves, and if the control is not timely, the entire leaves will even be eaten, which will seriously affect the growth and yield of the plant.
1, morphological characteristics and hazard symptoms: wolfberry negative mud worm is also called ten-point leaf beetle, egg yellow, generally there are more than 10 grains in a "V" shape arranged on the back of the leaf; the larvae are about 7 mm long, the mud is yellowish brown, and the back is attached to the black-green slime fecal negative mud worm, and the adult insects often inhabit the branches and leaves; the larva carries its own excrement, so it is called negative mud worm. The damaged leaves form gaps in the edges or the leaf surface is hollow, and in severe cases, the whole leaf flesh is eaten up, leaving only the leaf veins.
2. Occurrence law: Wolfberry negative mud worm often inhabits wild wolfberry or weed, flies to the cultivated wolfberry tree to eat the leaf tips, lays eggs on the back of the leaf in a "V" shape, and generally hatches as larvae for 8 to 10 days, starting a large number of hazards.
Goji berry negative mud worm occurs in an average of 3 generations a year, with adults overwintering in the field hideout, spring seven inch branches after the growth of the beginning of the harm, June to July is the most serious harm, in early October, the last adult insect feathering, the end of October into the winter.
3. Integrated control technology: Wolfberry negative mud worm larvae body wall is thin and drug-resistant, relatively easy to control.
(1) Agricultural measures: clean goji berry orchards, especially the fieldside, roadside goji root seedlings, weeds, every spring to clean and thoroughly remove once a year, the annual number of negative mud worms has a significant effect.
(2) Drug control: Generally choose poisoning and low toxicity chemical pesticides in the larval stage of the control effect is very good, such as with 40% Leguo 800 ~ 1000 times liquid or 20% kill pyrethroid 2000 ~ 2500 times liquid or 2.5% enemy killing 3000 times liquid, the control effect is very good.
(7) Goji berry black fruit disease
Black goji berry black fruit disease is an important disease of goji berries. The degree of occurrence of this disease is directly related to the rainfall in the growing season of goji berries, and the number of rainy days is large and the incidence is severe. When the disease is mild, the fruit matures and forms black spots, which reduces the economic value, and when the disease is severe, the green fruit becomes black and loses its economic value.
(1) Symptoms of the disease: black goji berry black fruit disease is a fungal disease, after the onset of green fruit, early appearance of small black spots or black spots or black reticulated lines. On rainy days, the spots expand rapidly, making the green fruit black and unable to ripen. On sunny days, the lesions develop slowly, the spots become black, and the uninseted areas can still mature into red. After the flower susceptibility disease, the petals appear dark spots, the light corolla falls off, the young fruit can develop normally, and the heavy ovary is black and cannot bear fruit. After the young buds become ill, small black spots or dark spots appear in the early stages, and in severe cases, the entire young buds become black and cannot flower. Small black spots or dark spots appear after the leaf disease.
(2) Pathogenesis: Pathogenic bacteria overwinter in the diseased fruit, can also remain in the tree and the ground in the black fruit overwintering, mainly through the wind and rain to the nearby healthy flowers, fruits, buds and other parts, the pathogen can invade through the wound and natural orifice. General wind friction and insect injuries are the main causes of wounds under natural conditions, and they are also the main channels of infection. The epidemic of black fruit disease is closely related to humidity and temperature, humidity and rainfall play a leading role in the occurrence of spread, and temperature only plays a role in promoting. The average daily temperature in the early stage (May to June) is more than 17 °C, the relative humidity is more than 60%, there are 2 to 3 days of rain every ten, the field can be sick, the average daily temperature of the peak period (July to September) is 17.8 ~ 28.5 °C, the rainfall is more than 4 days, the average humidity of the two consecutive decades is more than 80%, the incidence has soared, and the harm peak has occurred.
(1) In the middle and late January of the coldest winter, knock on the sick fruit on the goji berry tree.
(2) In the spring, combined with pruning, clean up the goji berry garden, and take all the diseased stumps, leaves and fruits out of the garden and burn them.
(2) Chemical control: in the production season from May to September, pay attention to listening to the local weather forecast, if there is continuous rainy weather during this period, spray 100 times the liquid equivalent Bordeaux liquid protection agent before rain, and spray 50% to 13pt after rain; line-height: 150% "> end of the month)
In this period, all kinds of diseases, insects, mites, except for a small number of wood lice in late March, all kinds of pest mites are in a state of stinging, all live in wintering places. The aim of integrated management is to reduce the base of stinging pests.
(1) Pay close attention to pruning measures. From the end of February to the beginning of March, the various branches that have been pruned, the residual pests and fruits that have fallen, the weeds and the tillers in the garden are taken out of the garden and burned in a concentrated manner. This measure has a good effect on reducing the base number of wolfberry aphids, wolfberry gall mites and rust mites, and also has obvious effects on reducing other diseases and insect pests.
(2) In late March, use 1500 times of 28% strong garden clearing agent or 40% stone sulfur compound crystal 100 times, or boiled stone sulfur compound 30 times + 48% chlorpyrifos emulsion 1000 times liquid to spray the canopy, ground, field edge, ground, weeds, which has the effect of significantly reducing the overwintering base of germs and insect eggs.
2. Comprehensive control of pests and diseases in the initial onset period (April to May).
In April and May, goji berries sprout, long leaves, and new shoots begin? During the period of biological activity, according to the type of various pests, the occurrence period is different, the harmful parts and methods are different, the corresponding prevention and control is taken. Insect pests will not occur in a big way, and minor pests and diseases will also get correspondingly? Cures moths and other pests.
(1) Strengthen mid-April to May?? Timely plucking of the two mixed branches is carried out to prevent the harm of aphids in the early stage of large-scale reproduction in the young shoots.
(2) In mid-April to control goji?? Ground closure work. Mix 150 kg of wet soil with 5 kg/667 m2 of 1.5% octylthion granules or 2 kg/667 m2 of 14% chlorpyrifos granules and sprinkle evenly into the soil.
(3) At the end of April to May, using the tendency of pyllids to yellow light, place 4 to 5 pieces of yellow cardboard with a size of 40×60 cm per 667 square meters, and coat the board with permethrin or psychic lice oil to trap the adult pyllids.
(4) Spray 4.5% permethrin 1500 times + 1.8% yilike lice 3000 times + 34% tachymolone 2000 times liquid or 0.5% saide 1500 times + 20% Thor mite net 2500 times pan > Longbao 2000 times liquid for spraying to control other pests such as aphids, wood lice, mites and so on.
(5) In the area where The erythropoda goji berry mosquitoes occur, 30% Arfat 2500 to 3000 times liquid can be sprayed in the middle of the year by using the canopy, and the soil can be applied to the soil. water.
3. Comprehensive control of 0% of pests and diseases >6 to July).
At this stage, goji berries are in a period of vigorous growth and fruit, and there are many types of various diseases and insect pests. The prevention and control of mites and black fruit diseases, taking into account other secondary lines-heights such as moths, green insects, scarab beetles, negative mud worms, blind bugs, etc.: 150%" > (1) strengthen fertilizer?? Compound fertilizer, reasonable nitrogen control, phosphorus and potassium fertilizer, supplement trace element fertilizer, enhance the resistance of trees to diseases and insects, reduce nitrogen-loving diseases and insect pests such as aphids, gall mites due to food filling? Irrigation methods, irrigation frequency, irrigation volume, control the long branches of wolfberry disciples, reduce the humidity of wolfberry orchards, and reduce the occurrence of diseases and insect pests.
(2) Intensive summer pruning. From mid-May to mid-June, according to the requirements of high quality and high yield of goji berries, a good tree shape is formed, the fruit branches are uniform and moderate, the load is reasonable, the long branches are removed in time, the branches are cut off in time, the nutritional status of the tree and the ventilation and light transmission conditions are improved, and the large number of diseases and insect pests is reduced.
(3) In the harvest period of black goji berries, the irrigation machine is used to pour the canopy, or spray ammonia nitrogen fertilizer or osmotic agent at high temperatures to kill and wash away aphids.
(4) Using the tendency of aphids to white light, place 4-5 pieces of white cardboard with a size of 40×60 cm per 667 square meters, and coat the board with imidacloprid or acetamidine oil. It is pest, mite, black fruit disease, using 3% acetamidine 2500 times + 20% red mite 2000 times + 1.5% thiamethione 600 times or 0.3% matrine 1000 times + 20% mite death net 2000 ~ 3000 times liquid or 70% Emiler 30000 times + 20% red ao 2000 times an> gold Lux 3000 times. With gall mites as the main treatment of other pests, with 20% pyridoxine 1500 times + BT1000 times + 10% imidacloprid 1500 times + daisen manganese zinc 600 times. With psyllids as the main treatment of other pests, the use of 4.5% permethrin 1500 times + 1.8% piriformis 3000 times + 34% tachymolone 2000 times + seedlings strong 1200 times, can achieve good prevention effect, and long effectiveness.
(6) In the area where The Mosquito Erythus erythelis occurs in this period, 30% Alpha 2500-3000 times is sprayed in the canopy in mid-June, and the poison tick, octylthion and other drugs such as chlorpyrifos and octylthion are applied in combination with soil -indent: 26pt; line-height: 150%" >4, autumn fruit period (August to October) integrated pest control.
The main pests and diseases in this period are aphids, wood lice, gall mites, rust mites, black fruit disease.?? Mites are generally unlikely to erupt. In addition to doing a good job in the prevention and treatment from August to September, the focus is on the prevention and treatment before entering the sting in late October.
(1) The end of the summer fruit?? Rationalize the fieldsides, ditches, roadside weeds and tillers in the wolfberry garden, destroy the pest breeding parasitic field 150%" > (2) sprayed with 3% acetamiprid 3000 times + 1.8% pyrithopper 3000 times + 28% diptoba mite 2500 times + 5% polyantimycin 600 times liquid.
(3) At this time, if the red gall mosquito and the fruit fly still occur, they can be sprayed with 30% Alpha 2500 times to 3000 times in combination with the canopy in mid-to-late August, and the soil is sealed by mixed soil irrigation such as chlorpyrifos and octyl thion granules. In accordance with the above control plan three times a year, the general red gall mosquito and fruit fly cannot occur again within three years.
(4) Do a good job in the prevention and control of various pest mites in late October before they enter the sting. At this time, the fruit picking has ended, and the prevention and control is mainly based on chemical control, with 20% dimethylpyridine 1500 times liquid + 48% chlorpyrifos 1000 times liquid for prevention and control.
(3) Unified prevention and control of diseases and insect pests and cross-migration infections
In the main wolfberry production area, set up a corresponding spray prevention team, according to the disease and pest detection report? It is necessary to formulate a unified control plan for the types, insect states, and severity of diseases and insect pests, taking into account minor diseases and insect pests. To achieve unified agent, unified concentration, unified equipment, unified personnel, unified spray prevention? The treatment of diseases and insect pests is prone to migration and infection due to scattered control, which affects the effective period and achieves the purpose of producing high-quality, safe and controllable pollution-free goji berry products
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