梨木虱是梨树上的害虫之一 ,此虫不仅损伤叶片 ,造成枯斑、落叶 ,而且伤害果实 ,严重影响果实的产量和质量。此虫繁殖能力强 ,一年中发生４ -５代 ,世代交叠 ,防治起来十分困难。本林场通过多年的实践 ,根据其发生特点 ,探索出一套比较有效的防治方法。一、要加强越冬成虫的防 Pear lice is one of the pests on the pear tree. This pest not only damages the leaves, causing dead spots and deciduous leaves, but also harms the fruit, seriously affecting the yield and quality of the fruit. This insect reproductive ability occurs in 4-5 generation a year, generations overlap, prevention is very difficult. The forest farm through years of practice, according to its occurrence characteristics, to explore a set of more effective prevention and treatment methods. First, we must strengthen the prevention of overwintering adult worms