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根据河北省2011年二点委夜蛾冬前越冬虫量调查的有越冬虫源田,选择正定县南楼村的大豆茬、花生茬地各1块作为越冬老熟幼虫春季化蛹系统监测田。依据本省常年春季气温情况(本省常年3月上、中、下旬日均气温分别为3.83、9.96、9.96℃)及二点委夜蛾蛹的发育起点温度(13℃)确定于
According to the survey of overwintering insect pests in winter before 2011 in Hebei Province, the soybean stubble and peanut stubble in each area of Nanlou Village in Zhengding County were selected as the monitoring system for spring pupation system of overwintering mature larvae. According to the annual spring temperature in our province (the annual average temperature in March, middle and late March was 3.83, 9.96, and 9.96 ℃, respectively), and the developmental temperature (13 ℃) of the development of pupae