High pole Privet, is the high pole of the big leaf Privet, commonly known as the high pole Privet, a kind of landscaping seedlings, ornamental is better. Jiangsu high pole Privet origin. Pycnogeneae; Privet genus; Large-leaf Privet species. The high-pole Privet is adaptable, light-loving, and slightly shade-tolerant. Prefers warm and humid climates and is slightly hardy. Privet is intolerant of drought and barrenness and grows in fertile, deep, moist, slightly acidic to slightly alkaline soils. The root system is well developed. Tillers and germination are strong and resistant to pruning. Resistant to chlorine gas, sulfur dioxide and hydrogen fluoride.
First, ecological habits
High-pole Privet is highly adaptable, light-loving, shade-tolerant, slightly hardy, prefers warm and moist environments, and is especially suitable for growing on sandy loam soils with high humus content. It grows more rapidly on slightly acidic soils and slower on neutral or slightly alkaline soils. The high-pole Privet has a certain deep root, so it is relatively resistant to wind. Tillers and germination ability are strong, resistant to pruning, and have strong resistance to toxic gases such as chlorine, sulfur dioxide, and hydrogen fluoride.
Second, planting methods and water and fertilizer management
The tall Privet seedlings should be transplanted with soil balls, and should be planted with them, so they need to dig the planted tree holes before planting. In general, the size of the tree burrow should be about 20 cm larger than the tree soil ball, and the size of the tree burrow should be consistent up and down, straight and cylindrical, and avoid digging into the bottom of the pot. If the soil condition is poor, the tree burrow should be deepened and enlarged, and it needs to be replaced with good soil. Generally, the height of the sealed soil after planting is slightly lower than 5 to 10 cm along the tree pit. Especially in the summer planting, remember to bring a large soil ball, and maintain the integrity of the soil ball, but also in time to thin the branches and leaves, in order to retain 1/2 of the original canopy is appropriate. In addition, when planting, it is also necessary to look at the position and orientation of the trees, so that the trees can fall into the pond upright in the center of the cave at a time, and then carry out layered soil filling and solidification.
The high pole Privet is not tolerant of drought, so it is necessary to water the head "three waters" when planting. In order to improve the survival rate, the dilution of the rooting solution of the large tree transplanting can be used as the first three waters for root irrigation. After the "three waters", you can pour water again at intervals of about 25 days. In addition, during the rainy season, the water in the hole should also be removed in time to prevent rotten roots. In late autumn and early winter, it is necessary to water the antifreeze water to prevent freezing, and the time for pouring antifreeze water is from the end of November to the beginning of December. At the beginning of March of the following year, it should be watered in time, and from then until late autumn, it should be watered once a month. In late autumn, the antifreeze water is poured according to the method of the first year. From the third year onwards, in addition to pouring enough antifreeze and thawed water, the daily situation should also be determined whether to water and the specific amount of watering. When planting high-cadre Privet in the nursery, it is also necessary to do a good job of weeding, loosening the soil, cultivating the soil, and control the planting density.
High-pole privets like fertility, so even adult-age high-grade high-grade privets should pay attention to fertilization work. The usual practice of fertilization of the nursery high-dry Privet is: when planting, the decomposing and fermented circle fertilizer should be applied as the base fertilizer, nitrogen fertilizer should be applied in May, phosphorus and potassium fertilizer should be applied in July, and semi-decomposed circle fertilizer should be applied in combination with watering antifreeze water before winter. In the second year of fertilization, nitrogen, phosphorus and potassium compound fertilizer can be applied once in late June, and another circle fertilizer can be applied in late autumn. Since the third year, it has been mainly used to apply farm manure in late autumn. In the later stage, if it is found that the seedlings have deficiency disease, a certain amount of trace element fertilizer should be applied in an appropriate amount during fertilization.
Third, the pruning method
The amount of pruning and the degree of pruning of the high pole Virginate should be determined according to the actual situation. For the large-leaf Privet to be cultivated into a high stem, it should be pruned from the seedling stage and cultivated into a stem-shaped tree shape. The specific method is as follows: for the current seedlings, when transplanting in the nursery, the trunk is shortened by 1/3, a strong bud is selected under the shear, and the rest of the buds are all erased, and the selected buds can grow into the main trunk to lengthen the branches. Before colonization, shorten the elongation branch of the annual trunk by 1/3, and still select only one strong bud, and the rest of the buds and leaves need to be erased. Other branches in the middle and lower part of the trunk, depending on the height of the trunk, select two or three branches with a certain spacing and staggered distribution as the main branches, shorten them, retain the lower buds, and erase all the upper buds. In summer pruning, it is also necessary to focus on the main branches on the short trunk to compete with the branches, and to remove the tillers on the roots and trunk. In the winter shearing of the following year, the short trunk lengthens the branches, in order to make the trunk straight, the position of the bud should be opposite to the position of the bud of the first year, and promote it to form a shaft branch. The second layer of main branches can also be selected according to the method of the first year, and attention is paid to shortness. The third year of winter pruning is similar to the previous two years of pruning, but depending on the growth of the tree, one or two main branches should be removed year by year to gradually increase the height under the branches.
When carrying out daily management and care of the nursery high-cadre Privet, it is also necessary to remove the inner branches, cross branches, diseased and insect branches in time. In addition, in order not to affect the viewing effect of the high-stem Privet in the future, the cut should be level with the main trunk and no pile should be left. Through the above-mentioned controlled pruning technology, under the premise of fully ensuring the photosynthetic area of the plant, it is possible to cultivate qualified landscape high-stem Privet in a targeted manner.
Fourth, pest control
The main diseases of the high-pole Privet are rust, brown spot disease and coal pollution disease, while the main insect pests are Japanese turtle wax borer, ash aphid, Privet lady jumping beetle, Privet ruler moth, ash silk borer and so on.
Prevention and control methods: for rust, in the early stage of the disease can be sprayed 0.2 ~ 0.3 baume degrees of stone sulfur compound, or 70% of the manganese zinc wettable powder 500 times liquid, or 70% methyl tolbuzin 1000 times liquid, or 25% triazolone 1500 times liquid. For brown spot disease, 75% Bacillus Qing wettable powder can be sprayed 800 times liquid, or 70% methyl tolbucin wettable powder 1000 times liquid at the beginning of the disease. For coal pollution disease, it can be sprayed with 75% Bacillus Clear wettable powder 800 times liquid, or 70% Daisen manganese zinc 400 times liquid, or 50% dented special wettable particles 600 times liquid.
For Japanese turtle wax mites and ash mites, it is possible to use grass handles or brushes to remove overwintering females and male pupae in the cocoon, or in their incubated nymphs, spray 95% mite mite emulsion 400 times liquid, or 10% imidacloprid wettable powder 2000 times liquid, or 4.5% high efficiency cypermethrin emulsion 2000 times liquid, or in May-June, spray 50% malathion 600 times liquid, or 25% iminothion 1000 to 1500 times liquid, or 40% Lego emulsion 1000 times liquid, or 10% Uranus 400 times liquid and so on.
For aphids, it can be sprayed with 4.5% high-efficiency cypermethrin emulsion 2000 times liquid, or 2.5% antipyridin emulsion 3000 times liquid, or 50% octinophos 1000 times liquid, or 50% anti-aphid 2000 times liquid, or 10% imidacloprid wettable powder 2000 times liquid.
For Privet Lady, it can be sprayed with 10% imidacloprid wettable powder 2000 times liquid, or 4.5% high efficiency cypermethrin emulsion 1500 times liquid + good wet 3000 times liquid, or 40% chlorpyrifos emulsion 1500 times liquid, or 20% insecticidal urea 3000 times liquid.
For the Privet moth, it can be sprayed with 50% octathion emulsion 1000 times liquid, or 50% borer pine emulsion 1000 times liquid, or 90% crystalline dichlorvos 1000 times liquid, or 50% dibromophosphorus emulsion 1000 times liquid, or 80% dimethophosphate emulsion 1000 to 1500 times liquid, or 10% Uranus emulsion 5000 times liquid.
For juvenile ash silk borer, it can be controlled by spraying 500 times liquid of Thuiensis niger emulsion, or 3% hypertonic phenoxyvir emulsion 3000 times liquid.
Source: China Agricultural Products Information Network
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