Watching the spring festival in the past for a period of time, Lichun also represents the arrival of spring, spring temperature has risen, spring is also the season of recovery of all things, at this time after the temperature rises, the fruit trees began to sprout new shoots, because after experiencing the low temperature of winter, the fruit trees in the spring to pull buds and new shoots when the tree momentum is also very weak, this is the time of pest infestation, after all, after the temperature rises, many wintering pests also began to sting activities, then this time the pests will invade the fruit trees, Today we are talking about the chestnut tree in the spring growth period, the pest flower cloth lamp moth infestation, I hope this article can help more growers, so that growers get rid of the pest problem.
For many areas in recent years have begun to plant chestnut trees, chestnut development prospects are also more optimistic, in recent years many areas of chestnut is also sold as an export commodity, for the growers who plant chestnuts, planting chestnuts is also a project that generates income at the moment, but for the planting of chestnuts, the most feared is pests and diseases, once the diseases and insect pests occur, chestnuts will have a large reduction in production, some chestnut trees may be due to the invasion of diseases and insect pests during the growth period, resulting in the death of fruit trees, So today we will talk about the harm of the chestnut in the growth period of the pest flower cloth lamp moth, the flower cloth lamp moth is a common pest of chestnut trees, in the spring chestnut tree is almost unable to escape the invasion of this pest, especially the chestnut tree has just begun to germinate in the spring, this time once it suffers from the invasion of the flower cloth lamp moth, it can cause the chestnut tree to fail to germinate and pull branches normally, resulting in the death of the chestnut tree, so for this pest, the grower still needs to remain vigilant in the spring to prevent the chestnut tree from being damaged.
The distribution of the flower cloth lamp moth is relatively wide, in the south and north of Our country have appeared, like the northeast region, Shandong region, Hebei region, Henan region, Yunnan region, Sichuan region, Hunan region, etc., there are distribution of flower cloth lamp moth, flower cloth lamp moth is also with the temperature began to sting, as long as the weather warms up, the trees began to sprout and branch out, this time the flower cloth lamp moth will appear, flower cloth lamp moth In addition to harming chestnut trees, trees like oak trees, oak trees and other trees are the target of the flower cloth lamp moth, If the spring growers do not pay attention, then it may cause relatively large losses, for the prevention and control of recent years is also a big problem, spraying drugs sometimes prevention and control is not thorough, artificial control increases the cost of growers, so for the prevention and control of the flower cloth lamp moth, the grower also needs to use scientific, efficient, low-cost methods to control the flower cloth lamp moth.
<h1 class="pgc-h-arrow-right" > first look at the harm of the flower cloth lamp moth to chestnut trees</h1>
Flower cloth lamp moth generally appears in the spring, is the most important pest of chestnut tree harm, flower cloth lamp moth in the spring, chestnut tree in the time of entering a large number of leafing period, the flower cloth lamp moth larvae will grow rapidly with the temperature, spring is also the larval overeating period, the larvae after leaving the bud, a large number of larvae will scatter to eat the leaves of the chestnut tree, if the grower in the case of not found in time, the larvae of the flower cloth lamp moth will quickly nibble on the leaves of the light chestnut tree, resulting in the leaves of the chestnut tree are full of holes Sometimes the scene after being eaten by pests is similar to the situation of winter fruit tree leaves, it can be said that the flower cloth lamp moth is a pest that appears synchronously with the growth period of chestnut trees, when the larvae invade chestnut trees, they prefer to invade the chestnut park planted in low-lying areas, once the chestnut trees are violated, there will be serious fruit trees can not germinate and pull leaves normally, fruit trees can not grow normally and bear fruit, sometimes the control is not complete, and it will also cause this pest to appear in the planting park every year.
< h1 class="pgc-h-arrow-right" > let's see what the role of this flower cloth lamp moth is? </h1>
Flower cloth lamp moth is a kind of pest belonging to the Lepidoptera, lamp moth family, flower cloth lamp moth is also called flower bud lamp moth, from the general planting point of view, but all moth pests for fruit trees are relatively large, flower cloth lamp moth is also a "fierce role", the main harm is that the larva nibble on the leaves and young shoots mainly, the early larvae will spit silk on the root of the chestnut tree and the leaves, and then form a bud, the larva will hide in the bud, the general larvae will go out to feed together, and then return to the bud together, which belongs to the unified pest, When going out to forage, they are arranged in large numbers to forage, and the speed at which the larvae nibble on the leaves is relatively fast, and the leaves of the chestnut tree will soon be eaten, leaving only the leaf veins. Let's see what the flower cloth lamp moth looks like?
Adult: When not flying, the adult of the flower cloth lamp moth has a body length of about 9-10 mm, a length of about 35-38 mm when flying, a light yellowish yellow at the front of the wing, a golden yellow at the back, a black color of the antennae, 6 black patterns on the wings, radiating from the corner area to the front, a V-shape from the bottom up at the top of the wing, 2 sets of scarlet markings in the posterior half of the outer edge, and 3 small black spots on the posterior corner. The position of the abdomen is wrapped in a layer of pink fluff.
Larvae: The length of the young larvae is about 15-25 mm, the length of the elderly larvae is about 30-38 mm, the body is brownish red, the head is black, the anterior chest, hip plate and abdomen are black-brown, the forebreast is divided into four pieces by yellow-white fine lines, the color of the thorax and abdomen is grayish yellow, and each section has white villi.
Eggs: The length of the egg is about 0.3-0.4 mm, milky white, oval, the surface of the egg is covered with a layer of pink villi, and the egg blocks are neatly arranged and blocky.
Pupae: The pupa is tea-brown in color and is about 10-12 mm long, similar to the shape of a mallet, with a ring of jagged spines at the posterior end of the abdomen.
< h1 class= "pgc-h-arrow-right" > we understand the life habits of the flower cloth lamp moth</h1>
Flower cloth lamp moth in most areas is only one generation of pests a year, the flower cloth lamp moth pupae appear in the spring, the time of occurrence is generally around 3-4 months, when the temperature is higher than 8-10 degrees, the pest will appear, the pest will be from the surrounding area of the park, began to attack the chestnut tree, to May to June, the larva will become an old larvae and begin to feather into pupae, to June to July, the pupa will feather into adults, to August to September is the peak of the hatching of the larvae, In October and November, the larvae at this time belong to the three-instar larvae, the larvae will winter around the chestnut park, the larvae will form buds in the soil cracks of the park, under the bark, the location of the roots, or in the leaf mezzanine of the park and begin to overwinter, and in March and April of the following year, the larvae will appear.
The larvae of the flower cloth lamp moth begin to bite the young leaves of the chestnut in March and April of each year, the larvae will be divided into several small groups to the trunk and branches to begin to crawl, in the evening, the larvae will form a bud on the chestnut tree, and then the larvae will first begin to nibble on the young shoots of the chestnut tree, at this time the young shoots on the chestnut tree will become more dry after the larvae bite, and after May, when the young shoots of the chestnut tree are in full bloom, the larvae will continue to nibble on the young shoots.
In June to July, the adult of the flower cloth lamp moth will appear, the adult worm belongs to the dormant state during the day, only come out at night to move, for the adult feathering period, the general adult will be feathered in the morning, to the time when it is almost dark, the adult worm begins to come out of the activity, this is also the time when the adult tail lays eggs, the adult egg laying will be carried out on the back of the fruit tree leaves, the egg shape is the original block type, each egg block has about 300 egg particles, the adult worm will die about 10 days after spawning, Then the egg will hatch after about 15 days, the larvae of the hubu lamp moth are also more intelligent, after hatching, the larvae will be in order to prevent their own body from being weaker, easy to fall from the tree, so the larva will begin to spit silk around the egg block after hatching to form a bud, and then the larva will hide in the bud, so that the larvae will not fall down after passing the wrapping of the bud, and then the larva will begin to nibble on the leaves in the evening.
For the larvae in the nibbling on the leaves, but also basically around the buds they made their own invasion of leaves and shoots, sometimes, the larva will also stick several leaves together and then make a bud when nibbling on the leaves, so that the larvae will have multiple buds to hide, can be a large area of nibbling leaves, sometimes a bud will hide 3000-4000 larvae, the life of the larvae is also relatively long, sometimes, the life of the larvae can reach more than 200 days, When the temperature in the park is below 8 degrees, the larvae will begin to descend the tree and then overwinter in a cocoon under the tree or elsewhere.
The larvae of the flower cloth lamp moth basically eat 2-3 times a day, basically three times in the morning, middle and evening, sometimes if the temperature changes briefly, the larvae will eat 2 times a day, divided into morning and afternoon feeding, the larvae are divided into four age segments, the larvae of the first-instar segment basically feed in the position of their own cocoon, and the second-instar larvae due to the increase in feeding, this is also the stage of overeating, the larvae of the second-instar segment will go out in a team with other larvae to go out to feed. By the time the third instar larvae reach, the weather has become colder at this time, and the third-instar larvae begin to form cocoons for the winter. In the second year the larvae peel and become four-year-old larvae.
<h1 class="pgc-h-arrow-right" > how to effectively control the flower cloth lamp moth? </h1>
1, for the early planting of chestnuts, try to choose the position of the hillside planting, for like at the foot of the mountain, the shade, are easy to cause the invasion of insect pests, especially in the planting area when planting chestnut trees, must not choose young trees and old trees together with mixed planting, young trees are also easy to suffer from the flower cloth lamp moth, planting chestnut fruit trees must be planted separately, usually for the spring, but also to keep the park moist, can not let the soil be too dry.
2, the use of flower cloth lamp moth has a habit of wintering, we in the autumn 10-11 months, you can carry out artificial removal of insects, for like the cocoon of the flower cloth lamp moth basically around the park, after the harvest of chestnuts in autumn, we have to carry out the cleaning work of the park, the measures of soil ploughing, clean out the stone blocks, weeds and fallen leaves of the park, for the cocoon of the flower cloth lamp moth is also very good to distinguish, the cocoon of the flower cloth lamp moth is yellow, it is easier to identify, for the collected insect cocoon to be uniformly incinerated, At the same time, the distribution location of the cocoon is mostly at the intersection of the root and trunk of the chestnut tree, and secondly, the undersperform of the bark of the old warp tree should also be cleaned to avoid the insect infestation of the second year caused by the missing cocoon.
3, for the park where insect infestation occurs in June-July, we can manually pick the leaves with insect eggs, at this time the adult insects are laying eggs in a large number, we can easily find the leaves with insect eggs, because the adult insects will be covered with a layer of pink villi on the egg after laying eggs, so it is easier to find, in addition, when the adult insects appear, the use of moths for light has phototropism, we can use black light lamps to trap adult insects. When there is a natural enemy of the flower cloth lamp moth in the park, it should also be protected, such as the tiger cocoon bee, the spiny collar bee, the black tumor bee, the flax fly, etc. should also be protected.
4, the use of poison rope for insect extermination, we can use the wintering flower cloth lamp moth larvae have a number of habits, can be tied on the chestnut poison rope to kill insects, when using the poison rope should also pay attention to, we should be in March to operate, when the temperature is higher than 10 degrees to carry out, we use the poison rope, to first dig out a soaking pit, and then use efficient cypermethrin drugs and waste oil in accordance with the ratio of 2:8 stir evenly into the immersion pit, put into the hemp rope or grass rope, Then soak for 40 minutes, fish out after the control of excess liquid, and then put into a plastic bag for preservation, but when making the poison rope, be sure to do a good job in the pest appeared in 3-5 days, storage time can not exceed a week, when using the poison rope remember to bring rubber gloves to operate, generally tied in the trunk of the chestnut tree and the root out of about 1 meter place can be.
5, reasonable use of efficient drugs for insecticide, for the killing of the flower cloth lamp moth is recommended to use high-efficiency and low-toxicity drugs for killing, it is recommended that the following drugs for insecticide, pyrethroid water emulsion, quinoaline wettable powder, neem emulsion, rotenone emulsion, nicotine matrine, avermectin emulsion, methyl vitamin salt emulsion, ethyl polycycline suspension agent for control of flower cloth lamp moth.
Special attention: for the use of drugs, due to the habit of the larvae to form a cocoon, once the larvae in the cocoon, the number and dose of spraying drugs will increase, so in the usual use of drugs for spraying treatment, it is necessary to spray several times, so that it can be effectively killed, for the use of drugs, we can kill in March, for adults to spawn, we can also use nicotine ・ matrine smoke control flower cloth lamp moth, For the release of natural enemy bees, it is also necessary not to spray drugs, and can release natural enemies to kill insects when the temperature is higher than 20 degrees.