第四代棉铃虫将大发生７月２７～２８日我站召开了各地、市、足二十四个主要产棉县（市）（含棉铃虫监测站）测报会议，对第四代棉铃虫发生趋势进行了会商。据会上反映三代棉铃虫发生实况，结合棉花长势、天气预报和历史资料，进行综合分析，预计第四代棉铃虫全省大发生，... The fourth generation of cotton bollworm will occur July 27-28 I station held around the city, foot 24 cotton counties (cities) (including cotton bollworm monitoring station) reporting conference, the fourth generation of cotton bollworm Trend has occurred to discuss. According to reports of the occurrence of three generations of cotton bollworm live, combined with cotton growth, weather forecast and historical data, a comprehensive analysis is expected that the fourth generation of cotton bollworm occurred in the province, ...