２００２年，全国重大农作物病虫害严重发生。北方地区东亚飞蝗和土蝗发生范围扩大，且继续保持严重发生的态势。草地螟发生居高不下，接近历史最重年份。小麦条锈病的流行范围和程度达到１９９０年以来的最高水平。麦蚜在北方大部麦区发生较重。南方稻飞虱和稻纵卷叶螟大发生 In 2002, major pests and diseases in the country occurred seriously. The occurrence of migratory locusts and soil locusts in the northern region expanded, and the situation of serious occurrence continued. Meadow borer high, close to the history of the year. The extent and extent of wheat stripe rust have reached the highest level since 1990. Wheat aphids occur most heavily in the northern part of the wheat area. Southern planthopper and rice leafroller large occurrence