随着梨树面积的不断扩大,原为次要害虫的中国梨木虱(俗称梨木虱),其危害也逐年加重,并上升为主要害虫,如何有效地遏制中国梨木虱危害,已成为梨农急需解决的一个重大问题。中国梨木虱以成虫和若虫剌吸汁液,主要危害叶片,亦可危害芽、花蕾、果实和嫩枝。受害叶片叶脉扭曲,叶面皱缩,产生枯斑,逐渐变黑,严重时导致落叶;若虫分泌的大量粘液,常造成叶片粘连,并诱发煤烟病,污染叶片和果实,影响光合作用;新梢受害后,生长萎缩,树势衰弱,影响花芽分化,这不仅严重影响梨树产量的提高,也导致果品 With the continuous expansion of the area of ​​pear trees, the pest of the former China pear psylla (commonly known as pear psylla), the harm also increased year by year, and rose to the main pests, how to effectively control the harm of Chinese pear psittacoderpha, pear has become urgently needed Solve a major problem. Chinese pear psylla adult juice and nymphs suck juice, the main hazard leaves, but also endanger buds, buds, fruits and twigs. Damaged leaves veins twisted leaves folds, resulting in dead spots, gradually black, leading to severe deciduous; nymphs secreted a large number of mucus, often resulting in leaf adhesion and induced sooty tobacco, pollution of leaves and fruits, affecting photosynthesis; new Shoot victims, the growth of shrinkage, weak bonsai, affecting flower bud differentiation, which not only seriously affect the pear yield increase, but also lead to fruit