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Which types of pesticides are resistant to rain washing?
When should fruit trees not be sprayed with pesticides? Please advise: to improve fruit yield and quality, reduce the number of pesticide applications, and extend the productive life of the trees, the key is to master the following critical periods in pest and disease control. The first is the period when buds clearly swell, that is, the bare-branch spray. During this period, spray a high-concentration fungicide plus insect...