我县地处赣北,是全国重点产棉县之一。历年植棉面积由五十年代4—5万亩发展到现在的10万亩。品种由土棉(铁籽)改为岱字棉。红铃虫由少到多,逐渐上升,对棉花产量、品级、衣分、长度、扭曲度威胁甚大。现就我县历年棉红铃虫发生情况初步分析如下。 My county is located in northern Jiangxi Province, is one of the key cotton-producing counties. Over the years cotton area from the 1950s 4-5 million mu development to the present 10 million mu. Variety from soil cotton (iron seed) to Dai word cotton. Red bollworm from less to more, and gradually increased, the cotton yield, grade, clothing points, length, distortion degree of threat. My county cotton bollworm is a preliminary analysis of the situation is as follows.