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我县位于安徽省东南部,苏、浙、皖三省交界处,全县稻田42万亩,其中单季中、晚稻37万亩。自六十年代后期,稻纵卷叶螟逐渐发生严重,成为常发性的主要迁飞害虫。常年发生20万亩左右,以四代危害单季稻最严重。1981年以前,主要依靠药治,农药用量占全县稻田农药总用量的47.1%。不仅污染了环境,稻纵卷叶螟的危害也未因此而得到控制。
My county is located in southeastern Anhui Province, Jiangsu, Zhejiang and Anhui provinces at the junction of the county 42 million mu of paddy fields, of which single-season, 3700 acres of late rice. Since the late 1960s, Cnaphalocrocis medinalis has gradually become serious and has become a frequent major migratory pest. Occurred around the perennial 200000 acres, the fourth generation of harms the most serious single crop of rice. Before 1981, mainly rely on drug treatment, the amount of pesticides in the county accounted for 47.1% of the total amount of paddy pesticides. Not only pollute the environment, the dangers of C. medinalis have not been controlled.