Physical control by yellow trap aphids, black light trapping moth.
物理防治利用黄板诱杀蚜虫，黑光灯诱杀蛾类。
Aphids have many polarizations only in body color, such as the yellow, the green and the intermediate color etc in cotton Aphids.
仅体色蚜虫就有多种分化，如棉蚜有黄色型、绿色型和中间型之别。
The prevention effect of fly nets above watermelon against yellow melon leaf beetles, cabbage caterpillars and aphids were 100%, 100% and 80% respectively.
防虫网对西瓜主要害虫黄守瓜、菜青虫的控制效果为100%，蚜虫的控制效果为80%。
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