论文部分内容阅读
棉铃虫越冬蛹的调查夏志贤（山东曹县植保站，２７４４００）近年来棉铃虫在黄淮海棉区严重发生，因此调查好田间越冬蛹的存量，对翌年第一代棉铃虫发生的正确预报，至关重要。从调查中我们发现田间的越冬蛹，除棉铃虫外，尚有斜纹夜蛾、甜菜夜蛾、烟草夜蛾、甘蓝夜蛾和粘...
Investigation on Overwintering Pupae of Cotton Bollworms XIA Zhixian (Shandong Caoxian Plant Protection Station, 274400) In recent years, cotton bollworm occurred seriously in Huanghuai sponge area. Therefore, the stocking of overwintering pupae in the field was investigated. The correct forecast of the first generation cotton bollworm occurred in the following year, important. From the survey we found that the overwintering pupa in the field, in addition to cotton bollworm, there are Spodoptera, beet armyworm, tobacco budworm, cabbage moth and sticky ...