After entering the spring, as the temperature gradually rises, the fruit trees and pests that are dormant in winter are also active. At this time, strengthening the comprehensive prevention and control of fruit trees pests and diseases is the key to prevention and control throughout the year.
Prevention and control of early spring fruit trees before flowering before flowering: clearing weeds, leaves and pests in the orchard, scraping the skin and rough skin, pruning the disease, the residual, the dead branches, and then burning or deep burying, can effectively control the occurrence of rot Spreading and inhibiting the overwintering eggs of red spiders have obvious effects on controlling powdery mildew, leaf curling insects and scale insects.
Control after germination: Orchard sprays 150~200 times of 45% crystal stone sulphur mixture or Baume 0.3 degree stone sulphur mixture plus 50% 1605 emulsifiable oil 1000 times solution, which can kill more than 90% of red spider and bud In the winter, the powdery spores such as powdery mildew and deciduous diseases can also control chafers and aphids.
Pre-flowering control of fruit trees: spraying 1500 times 50% of 1605 or 80% dichlorvos 1200~1500 times, enemy killing and pyrethroid pesticides 2500~3000 times liquid, obviously preventing leaf insect pests and rot diseases effect.
Fruit tree flowering After the flowering, the tree can continue to use Bomei 0.3~0.5 degree stone sulfur mixture to control leaf disease and red spider. It can also spray 2500~3000 times of effort and eliminate sweeping, which can prevent and control red spiders and kill eggs of leaf-feeding insects and heartworms.
Spraying 1:4:20 (copper sulfate:lime:water) Bordeaux mixture or spraying 40% carbendazim and retort 600~800 times within 15 days after flowering, it can effectively control deciduous diseases, anthracnose and brown spot .
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