The red spider is small and has many generous algebras. It not only sucks the leaf juice, but also harms the young fruit when it occurs. The following three key measures should be taken during prevention and treatment:
1. Killing the wintering insects: Do a good job of artificially controlling the hay baling method: When the wintering insects appear in the first ten days of September, the hay is trapped on the trunk and main branches of the apple tree to trap the wintering insects, and then the fire is destroyed. Bark peeling method: After thawing in early spring, combine with other pests and diseases, remove the old skin, clean the wintering place, and kill the winter spider.
2, early **** agent control: in the flower buds of the fruit tree expansion period is the beginning of the winter red spiders, grab a spray of Bamei 0.3 ~ 0.5 degrees stone sulphur mixture or 40% omethoate emulsion 2000 times solution.
3, the growth and treatment of pesticides: from early August to August is the breeding of red spiders is a dangerous period, such as high temperature dry can promote the proliferation of red spiders. Therefore, in the end of June to the beginning of July, spray 20% triclosan sulfone wettable powder 600~1000 times solution or 50% methamidophos emulsion 1000~1500 times solution. It is effective for each stage of red spider, and the control period is 40-50 days.
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