Before and after flowering of fruit trees in spring, it is a great opportunity to prevent and treat pests and diseases, because at this time, all kinds of pathogens and pests become active after a winter dormancy, they have poor resistance to drugs, and leaves have no germination, no shelter, convenient application, and fruit trees are not There will be phytotoxicity.
Before the flowering of the fruit trees, spraying Bami 5 degree lime sulfur in time can control the rot disease and inhibit the wintering propagation of the red spider, which has a significant effect on the control of bronchitis, leaf roller insects and scale insects. It can also spray 40% of Asabe 100 times liquid.
After the fruit trees germinate, the orchard will spray 150-200 times of 45% crystal rock saturator or US 0.3 degree lime sulfur plus 50% of 1605 EC 1000 times, killing more than 90% of the spider mites and in the buds. Overwintering powdery spores such as powdery mildew, defoliation, etc. can also control chafers and aphids.
After germination, before flowering, the fruit trees were sprayed 1500 times 50% 1605 or 80% dichlorvos 1200-1500 times, and the enemy killed 2500-3000 times liquid chrysanthemum pesticides, which had obvious control effect on pests and rot.
After flowering, the fruit tree can continue to use 0.3-0.5 Baume of lime sulfur to control leaf disease and spider mites. It can also spray 2500-3000 times of time, eliminate sweeping, can prevent and control red spider and kill food. Leafhoppers, spawning eggs.
Within 10-15 days after flowering, fruit trees can be sprayed with 1:4:20 Bordeaux mixture (ie, 1 kg of copper sulphate, 4 kg of quick lime, 20 kg of fresh water) or sprayed with 40% carbendazim and 600-800 times of tetrazine. Prevention of the occurrence of leafy disease, anthrax, and brown-blight disease that are prone to high temperatures and high temperatures.
Thiamin and dichlorvos are strictly prohibited within 1 month after flowering.
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