Prevention and treatment of pear caterpillars from Qingyuan Park
1. After the pear trees are harvested, weeds, dry branches, fallen leaves, and fruit drop in the fields are thoroughly removed, and the fields are burned out of the fields. This can effectively reduce the overwintering source of the star caterpillars in the field.
2. Combine pear tree pruning to scrape the rough old skin, cracked skin, cracked skin, etc. on the trunk of the pear tree, deeply buried or burned to eliminate the overwintering disease source attached to it. And apply a tree maintenance general to the scrape of the trunk to prevent the invasion of the disease from the wound.
3, pear leaves after the fall to the soil before freezing with quicklime, clay, general tree maintenance, insecticides, etc., formulated as a whitening agent on the tree trunk painted white, can effectively eliminate the winter trunk pear and caterpillar in the tree, Reduce the number of insect populations and protect the high yield and yield of pear trees in the coming year.
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