Aphids mainly damage young leaves, buds, flower buds and other young organs. They pierce plant tissues with a sucking mouthparts and absorb a large amount of liquid juice nutrients, causing plant malnutrition. Take Taotao as an example: it is distributed throughout China. The peach aphid occurs in the first 20 to 30 generations. In the cold regions, the eggs are overwintered. In the warm regions, the wingless oysters are overwintered in the heart of the plant.
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Orchid tsutsugamushi is a good choice for pesticide treatment:
In the season of aphid damage, spray 20% of pyrethroid 2000 times, or 150 times of washing powder. During the dormancy of fruit trees such as peaches and pears, spray 3 to 5 degrees of boehmite sulphur mixture to kill eggs. For a large number of damaged branches, they can be cut and destroyed. Natural enemies can be used, such as a variety of ladybugs, grasshoppers, and food flies. The bee is controlling its occurrence.
Orchid tsutsugamushi