梨黄粉虫,又名黄粉蚜,是梨树的重要害虫之一,被害果肉组织逐渐腐烂,严重时全果脱落,严重影响果品质量。 1、发生规律:此虫以卵在树皮缝、伤口或枝干的残附物内越冬。翌年梨树开花时(4月上中旬)卵孵化,羽化成虫后在原处继续产卵,6月中旬前后,虫口猛增,7月中旬群集果实萼洼繁殖,8～9月出现有性蚜,交尾后越冬。 Pear molitor, also known as yellow aphid, pear is one of the important pests, the victim of flesh gradually decay, when the whole fruit off, seriously affecting the quality of fruit. 1, the occurrence of the law: the worm to the bark in the bark, wounds or branches of the residue overwintering. In the following year, when the pear tree blooms (mid-April), the eggs hatch. After the emergence of adults, spawning continues in place. Around mid-June, the number of pests spikes. In the middle of July, the fruit of the cluster fawns and breeds, with sexual aphids from August to September, Overwintering after mating.