1. Select high-efficiency, low-toxic, low-residue pesticides and biological pesticides, plant sources, and mineral sources.
2. Attach importance to the use of prevention and control measures such as agriculture and physics. The agricultural measures such as orchard removal, bark scraping, and rational fertilization can be taken; the application of attractants, vibrated insecticidal lamps, and sweet and sour liquids are widely used to induce pests.
3. Choose a reasonable timing of prevention and treatment, timely and appropriate use of drugs, the right medicine. Target pesticides should be selected for different pests, such as chewing mouthpart pests, insecticides with stomach poisoning, pesticides for sucking mouthparts, and insecticides with strong systemic absorption. The control of powdery mildew can be used triazole fungicide; prevention and treatment of bacterial diseases, the application of agricultural streptomycin or neomycin and so on. There are also differences in the control period of different pests. For example, apple fungal heart disease is the best timing for prevention and treatment at the end of blooming flower; apple brown spot disease should be prevented from April to June, and the system should be used multiple times after onset (in mid-July). Fungicides can reduce the re-infection of germs without causing a lot of fallen leaves. According to the temperature and humidity conditions to determine the amount of drug, such as in the lower temperature period, the maximum dose can be used; in the case of high humidity or fog, exposure and even cloudy, do not spray and use Bordeaux mixture, synthetic copper preparations. The pests with strong antagonistic and waxy surface coverage can add pesticide additives to increase the penetration and adhesion of pesticides.
4. Use pressure-applicable, atomized applicators. Make use of low-volume spray equipment for dwarfing, sparse orchards; use multiple nozzles or spray guns with small bore diameters to ensure a high degree of atomization and evenly spread the pesticide on the foliage and fruit surfaces to improve control efficiency.
5. Select a new and efficient pesticide species that does not affect pollination and damaged fruit surfaces. Do not use broad-spectrum insecticides before and during the growth period to avoid killing natural enemies and beneficial pollinating insects of bees, moths, and butterflies; do not use sulfur-containing yellow, copper, complexes, and non-complexed mancozebs, and low insecticides. Effective and poor quality fungicide, so as not to produce fruit rust or cause rough fruit surface; do not use fungicides such as Fumei pairs of young buds, young fruit easy to produce phytotoxicity. Minimize the use of wettable powders and emulsifiable concentrates. Aqueous suspensions, dry suspensions, water emulsions, and microemulsion pesticides can be used. The latter has small particles, a complete insecticidal and bactericidal effect, a long duration of potency, and the avoidance of fruit rust. . Such as 50% thiophanate-methyl suspension, 40% carbendazim suspension agent.
6. Control the damage of fruithoppers, scale insects, Cornell mealybugs, and blind sucking pests before fruit bagging. When bagging, it is necessary to prevent harmful insects from being left on the fruit surface. It is also necessary to prevent a large amount of insects. After the bagging, harmful insects penetrate into the bag, resulting in black spots and spots on the fruit surface, which may affect quality.
7. Fruit calcium supplementation is essential for bagging apples. It is better to use boron or calcium to promote absorption of calcium or rare earth-containing calcium preparations. The use should not be less than 2 times.
8. The orchard with a serious rot disease should be properly fertilized and sprayed on the leaves to restore its vigor. To apply the base fertilizer, topdressing phosphorus and potash fertilizer, and spraying foliar acid, rare earth and other foliar fertilizers before flowering, young fruit, and middle and late stages.
9. Use high-quality, breathable membranes and paper bags. For high-temperature and rainy years, increasing the density of vent holes in the bag or expanding the vents can effectively reduce the incidence of diseases such as apple black spot disease.
Wireless Breast Pump,Expression Breast Pump,Electric Breast Pump,Function Breast Pump
NINGBO YOUHE MOTHER&BABY PRODUCTS CO.,LTD , https://www.oembreastpump.com