棉小灰(虫甲)食性杂,除危害棉花外,还危害大豆、玉米等作物。近年来由于耕作制度改革,大豆、棉花面积扩大,其危害也逐年加重。成虫咬食棉花叶柄、嫩尖、幼蕾,引起枯死、脱落。1985—1987年对其发生规律和防治方法进行了研究,结果报告如下:一、棉田象(虫甲)的优势虫种棉田象(虫甲)有数种。据1986年对虞城县10 Small gray cotton (insect) feeding complex, in addition to endangering cotton, but also endanger the soybean, corn and other crops. In recent years due to farming system reform, soybean, cotton area expansion, the harm is also increasing year by year. Adult bite cotton petiole, tender tip, young bud, causing death, fall off. From 1985 to 1987, its occurrence and prevention methods were studied. The results are reported as follows: First, the advantages of cotton fields (insects) Insect species cotton field (insect) There are several species. According to Yucheng County in 1986 10