晋中市是山西省主要果品生产基地,现有果树63 000 km2。其中梨栽培面积近20 000 km2,年产梨果3亿kg。2003年7月中旬祁县、平遥县和太谷县的一些乡镇梨园套袋梨发生黄粉蚜[Aphanostigmajakusuiesis(Kishida)]钻入袋内严重为害,发生面积达3 000 km2。有的果肩凹陷,有的表皮硬化龟裂,还有的果园形成落果。果农对此反应强烈,对全市果树产业化推进和区域布局带来较大影响。1发生为害情况梨黄粉蚜在本 Jinzhong is a major fruit production base in Shanxi Province with an existing fruit tree of 63,000 km2. Pear cultivation area of ​​which nearly 20 000 km2, annual output of 300 million kg pear. In mid-July 2003, Aphanostigmajakusuiesis (Kishida) was found to have been severely damaged by the occurrence of bagging pear pears in some townships in Qixian County, Pingyao County and Taigu County, with an area of ​​3,000 km2. Some shoulder depression, and some sclerosis sclerosis, and some fruit orchard formed fruit. Fruit farmers responded strongly to the city’s fruit tree industrialization and regional distribution have a greater impact. 1 pests occurred pear powder aphids in this