西昌市是梨的主产区，梨种植面积达 1万多亩。近年来，西昌梨树梨木虱和梨梢木虱发生严重，给广大种植户带来不小的经济损失。梨木虱和梨梢木虱为同翅目，木虱科。梨木虱危害梨叶，造成落叶；梨梢木虱危害梨梢。梨木虱喜欢冷凉气候，主要危害新鲜叶片；梨木梢虱危害新梢。春夏 Xichang is the main producing area of ​​pear, pear cultivation area of ​​10,000 mu. In recent years, Xichang pear pear psylla and pear-shaped pyloric serious, to the majority of farmers bring no small economic losses. Pear lice and pear-tip psyllids for the Homoptera, psylla. Pear lice damage pears, resulting in deciduous; pear-shaped pests harm pears. Pear lice like cool climate, the main hazards of fresh leaves; pests of wood shoots lice damage new shoots. Spring and summer