Relationship between the overwintering generation and the first g eneration of the beet webworm.
Author of the article:KANG Ai-Guo1，YANG Hai-Zhen2,LI Qiang1,FAN Rong-Xian1,ZHANG Yu-Hui1，SHEN Chen3,ZHAO Xiao-Juan4
Author's Workplace：(1.Plant Protecion Station of Kangbao County,Hebei Province, Kangbao 07665 0, China; 2.Institute for the control of Agrochemicals, Hebei Province 050 031, China; 3. Plant Protecion Station of Zhangjiakou City, Hebei Province, Z hangji
Key Words：Loxostege sticticalis L.; overwintering ge neration; fir st generation
Abstract：Based on analysis of data collected from 1979 to 2002, we confirmed the close re latio nship between the overwintering number and first generation occurrence of the be et webworm, Loxostege sticticalis L. The results are valuable to studying the l