First, it is necessary to select high-efficiency, low-toxic and low-residue pesticide varieties and biological pesticides, plant sources and mineral source preparations. It is strictly forbidden to use highly toxic pesticides.
Second, attach importance to the use of agricultural, physical and other prevention and control measures. Agricultural measures such as cleaning the orchard, scraping the bark, and rational fertilization can be taken; the application of the attractant, the vibrating insecticidal lamp, and the sweet and sour liquid to attract pests are vigorously promoted.
Third, choose a reasonable timing of prevention, timely and appropriate amount of medication, the right medicine. It is necessary to select pesticides for different pests and diseases. For example, to control chewing mouthparts pests, it is necessary to select insecticides with stomach toxicity; to control sucking mouthparts pests, it is necessary to select insecticides with strong systemic absorption. For the prevention and treatment of powdery mildew, triazole fungicides can be used; bacterial diseases can be controlled, and agricultural streptomycin or neomycin can be applied. The control period of different pests and diseases is also different. For example, apple mildew disease is the best time for prevention and control at the end of full bloom; apple brown spot disease should be prevented from April to June, and systemic use should be used multiple times after the onset (mid-July). The fungicide can reduce the re-dip of the bacteria without causing a lot of fallen leaves. The dosage is determined according to the temperature and humidity environmental conditions. For example, in the lower temperature period, the maximum dose can be used; in the case of high humidity or fog, dew and cloudy conditions, do not spray and use Bordeaux mixture or synthetic copper preparation. For pests with strong resistance and waxy surface, pesticide additives can be added to increase the penetration and adhesion of pesticides.
Fourth, we must use a large pressure, atomized application equipment. Try to use low-volume spray equipment for dwarf and thin orchard; use a small-nozzle multi-nozzle or spray gun to ensure a high degree of atomization, and the medicine is evenly placed on the foliage and fruit surface to improve the control effect.
5. Choose new and efficient pesticide varieties that do not affect pollination and damage to fruit surfaces. Do not use broad-spectrum insecticides in the mid-to-growth period to avoid killing natural enemies and insects that are beneficial for pollination of bees, moths, and butterflies; do not use sulfur-containing, copper, compounded, and non-complexed mancozebicides and low A biocide with poor quality and low quality, so as to avoid fruit rust or rough surface; do not use fungicides such as thiram, which are susceptible to phytotoxicity to young shoots and young fruits. Use as little as possible of wettable powders and emulsifiable concentrates. Water suspending agents, dry suspending agents, water emulsions, and microemulsions can be used. The latter liquid particles are small, insecticidal and bactericidal, and long-lasting, and can avoid the occurrence of fruit rust. . Such as 30% bacteria aseptic, 50% thiophanate-methyl suspension, 40% carbendazim suspension. When using the medicine, adding the Chunyu No. 1 bullet, not only improves the efficacy, but also enhances the growth of the fruit tree, and prevents the falling fruit from falling to the fruit.
6. Control the hazards of sucking pests such as aphids, scale insects, Kang's whitefly, and blind mites before fruit bagging. When bagging, prevent harmful insect residues from remaining on the fruit surface, and prevent the insects from being large. After the bag is bagged, the harmful insects will be drilled into the bag, causing black spots and spots on the fruit surface, which will affect the quality.
Seven, fruit calcium is essential for bagging apples. It is advisable to use boron and calcium to promote absorption or rare earth-containing calcium preparations. It should not be used less than 2 times. In order to improve the effect of topdressing, use the Zhongweizi warhead together to increase the absorption of fertilizer by 45%-60%. .
8. Orchards with serious rot disease should be fertilized reasonably, foliar sprayed, and restored to the tree. It is necessary to apply the base fertilizer, apply the phosphorus and potassium fertilizer, and spray the foliar fertilizer such as Jiaoyan before and during the flowering, young fruit and middle and late stages.
Nine, select high-quality, breathable film, paper bags. For high temperature and rainy years, increasing the venting hole density of the fruit bag or expanding the venting port can effectively reduce the occurrence of diseases such as apple black spot disease.
Gabion boxes are made of Galvanized Wire / ZnAl (Golfan) coated wire / PVC coated wires, the mesh shape is hexagonal style. The gabion boxes are used widely in slope protection, foundation pit suporting, mountain rock holding, river and dams scour protection.
Gabion boxes can be supplied in various lengths, widths and heights. In order to strengthen the boxes,all the edges of the structure shall be selvedged with wire of bigger diameter.
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