据全国各棉区病虫区域站监测,今年第二代棉铃虫在北方棉区发生程度明显重于前几年,回升速度呈较大幅度增长,其中河北南部、山东大部和新疆局部地区发生程度达偏重至大发生。根据当前棉铃虫残虫基数,结合气象和生态环境等因素综合分析, According to the monitoring of pest and disease stations in various cotton areas across the country, the second generation of cotton bollworms in this year was significantly heavier in the northern cotton area than in previous years, and the rate of recovery showed a substantial increase, of which, southern Hebei and most of Shandong and some areas of Xinjiang occurred To the extent of emphasis on the occurrence. According to the current base of cotton bollworm residues, combined with meteorological and ecological environment and other factors comprehensive analysis,