3—4月小麦返青拔节时期,主要发生的害虫就是麦蚜和麦蜘蛛了。这两种害虫发生普遍而严重。如1952年三、四月里,山西、河南、陕西等省,麦蚜空前严重发生,经发动群众大力捕打,共捕麦蚜一百九十馀万斤。麦蜘蛛51年仅安徽阜阳本区便有150馀万亩小麦发生。53年春山西、河南、陕西、甘肃、安徽、山东等地普遍发生麦蜘蛛为害。由上述的严重情况看来,我们必须对麦蚜和麦蜘蛛给予足够的重 During April-April wheat regreening, the main pests that occurred were wheat aphids and wheat spiders. The occurrence of both pests is widespread and serious. As in March and April 1952, Shanxi, Henan and Shaanxi provinces and other areas witnessed unprecedented serious occurrence of wheat aphids. After launching mass campaigns, they ate over 1,900 kilograms of wheat aphids. Fifty-one million mu of wheat occurred in the area of ​​Fuyang, Anhui alone in 51 years. 53 years spring Shanxi, Henan, Shaanxi, Gansu, Anhui, Shandong and other places widespread wheat spider damage. From the above serious case, we must give enough weight to the wheat aphids and the wheat spiders