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梨木虱是梨树上最主要的害虫。以成虫和若虫为害梨叶,造成枯斑,早期脱落,使树势衰弱,降低果实品质和产量。梨木虱食性专一,主要为害梨树。每年发生4~5代。成虫分冬、夏型两种。冬型成虫在梨树枝干的裂缝内越冬,少数在杂草、落叶及土壤中,在冬季对越冬场所进行综合防治,能起到事半功倍的效果。一、清园清理园内和周围的残枝、落叶及杂草,深埋或烧毁,降低越冬梨木虱基数。
Pear lice are the main pests on the pear tree. Damage to adult pests and nymphs pear leaves, resulting in dead spots, early fall, so that the weak potential of trees, reducing fruit quality and yield. Pear lice specific diet, mainly pear damage. 4 to 5 generations occur each year. Adult winter, summer type two. Winter-type adult pear in the branches of pear winter cracks, a few in weeds, deciduous and soil, in winter winter comprehensive prevention and control of places, can play a multiplier effect. First, the Qingyuan clean up and around the park residual branches, leaves and weeds, buried or burned to reduce the number of pear-shaped lice pest.