受全球气候变暖,极端天气频繁出现等因素的影响,2008年全国农作物病虫害发生严重。据初步统计,该年全国各地农作物病虫害累计发生3.33亿hm2次以上。其中重大病虫发生1.67亿hm2次左右。蝗虫、水稻“两迁”害虫、小麦条锈病等重大病虫害呈偏重发生态势;小麦吸浆虫、小麦胞囊线虫发生范围不断扩大、发生程度不断加重;小地老虎、叶螨在部分省份大暴发,并造成严重为害。笔者现就2008年 Affected by global warming and the frequent occurrence of extreme weather, crop diseases and pests in the country were seriously affected in 2008. According to preliminary statistics, a total of 333 million hm2 of crop diseases and insect pests occurred throughout the country in that year. Major pest and disease occurred about 167 million hm2 times. Locusts, rice “two move ” pests, wheat stripe rust and other major pests and diseases are prevalent; wheat midge, wheat cyst nematode range continues to expand, the degree of aggravating; small tiger, spider mites in some provinces outbreaks , And cause serious harm. The author is now in 2008