“一遍净”在梨园虫害防治中大有可为众所周知，在梨园的虫害防治中，梨木虱及梨绣线菊蚜是果农深感头痛且屡治不好的两种虫害。梨木虱若虫抗药性强且有粘液包围，一般传统药剂防治很难奏效。梨绣线菊蚜繁殖速度较快。成虫具有迁移性，尽管喷药次数多但效果不明显，令人防... “Once again the net” Pear in pest control is promising As we all know, pears pear pest control, pear psylla Pear and Pear Spiraea aphid fruit pests are deeply affected by the headache and repeatedly cured two pests. Pear lice nymphs resistant and surrounded by mucus, the general control of traditional medicine is difficult to work. Pear Spiraea aphids breeding faster. Adults have migratory, although the number of spraying but the effect is not obvious, it is defensive ...