The main factors causing early defoliation of cherries are: leaf disease, leaf insect pests, root diseases, etc., and timely prevention and control.

Leaf disease prevention and treatment of various diseases in autumn has begun to gradually winter, and there are few new diseases, but in the orchard where the early leaf disease prevention and treatment is not timely, there will be many kinds of diseases in this orchard, a lot of yellow leaves, fallen leaves, main leaves. There are various types of brown spot disease and leaf spot disease. Mainly use pesticide control, spray 2 to 3 times 20% Longkes 500-700 times liquid, or Fuxing 6000 times liquid, or sterilization 1000 times liquid.

In the prevention and control of leaf pests, most of the pests in September and October have ceased to be harmful. There are still some caterpillars, floating dust and cockroach pests, which are serious and must be controlled. Among them, the main control of floating dust sub-species is related to other types of pests. Control method: In the middle and late October, the leaves of the trees are sprayed with 3000-4000 times of imidacloprid, or 2000 times of Liundong, or 2000 times of green kungfu can cure other pests. The 1-2 year old saplings use plastic bags to cover the tree body to the dry base before the adults produce the wintering eggs, preventing the adults from laying eggs, and the effect is very good.

Root disease and pest control In autumn, less rainfall and dry soil is a good time to control various root pests and diseases. The main root diseases are: root rot, root cancer, underground pests. Underground pests mainly include cockroaches and larvae. 50% diazinon emulsifiable concentrate 500 times solution or 50% phoxim emulsifiable concentrate 800 times solution can be used, and any kind of root can be used. 1 to 15 days of irrigation, continuous irrigation 2 to 3 times.

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