In May, as the temperature rises gradually, the fruit trees begin to enter the rapid growth period of new shoots and the cell division period of young fruit. This period is also the beginning of various pests and diseases, and the period of occurrence is the harm period. The principle of prevention and control of pests and diseases is “to prevent Based on prevention, prevention, prevention and control, comprehensive use of agriculture, biology, physics, and chemical control of pests and diseases. Prevention and control Diseases should focus on the prevention and control of early apple defoliation, ringworm disease and anthrax, insect pests mainly highlight the prevention and control of spider mites, aphids, leaf curl insects, caterpillars, leaf leaf moths. Prevention and control methods 1. Highlight agriculture, physics, and biological control. Strengthen soil and fertilizer water management, implement reasonable loads, improve the self-resistance of the book, effectively control pests and diseases through fruit bagging, and make full use of comprehensive physical control measures such as lamps, panels, and belts. Trap and kill pests; put on food crickets, the use of attracting lure and other biological control measures to control pests and diseases. Yellow plates, eating crickets, and sex cues should be hung in the crown or tied to the trunk. 2, scientific application of chemical prevention and control 1, pharmaceutical selection. Bactericide used 2% agricultural anti-120 water agent 100 times liquid, 80% Dasheng M-45 wettable powder 800-1000 times liquid, 200-240 times Bordeaux mixture, 70% thiophanate-methyl wettable powder 800-1000 times liquid , 68.5% multi-antibiotics 1000 times liquid and other fungicides, prevention and treatment of early defoliation, rot, fruit ringworm disease and anthrax and other diseases; pesticides use 50% mothaloprene 1500-2000 times fluid, 30% Peach Xiaoling 2000-2500 times liquid, Xin urea, 25% diflubenzuron No. 3 suspension 1000-2000 times liquid, Nissoline 1500 times, 10% imidacloprid 1500-2000 times liquid and other insecticide acaricide, prevention and treatment Red spiders, aphids, borer bugs, leaf curl insects, caterpillars, leaf miners and other pests. Science Spraying 1, each spray should have a focus on prevention and control, pay attention to spray parts. Red spiders and leaf miners must focus on the back of the leaf; tip leaf roller moths and radix scutellariae should focus on the spray tip; fruit borer control should pay attention to fruit spray. 2, rainy days, foggy days, there is dew, high temperature can not spray at noon; spray pressure when the pressure is greater, the finer the atomization, the nozzle from the fruit surface and leaf surface about 50 cm, so that the agent as small as possible fog Droplets are evenly attached to the leaves and fruit surfaces, avoiding water sprays and minimizing irritation to the fruit surface. 3, before the fight drugs clean drug pool, in particular, hit the herbicide, lime sulfur pool, medical equipment, before the fight drugs should be cleaned. Do not use the effluent for medicine, use clean water. 4, to use the "secondary dilution method", that is, first pour the drug into a small amount of water, stir, and then dilute the liquid into a sufficient amount of water, stir and spray. Must use the "first add water, after dosing, secondary dilution, stir spray" of the dispensing operation method. Supreme Fresh Potato,Fresh Potato Yellow Vegetables,Fresh Potato Delicious,Potato Grade A Laiwu Manhing Vegetables Fruits Corporation , https://www.manhingfood.com