二化螟在我省发生代数,各地都进行过观察和研究,但是从报道的资料和反映的情况来看,认识不一致,出入较大。例如,陈东(1979)报道,赣中以四代为主,部分三代,而该地区不少县认为以三代为主,部分四代。清江县植保站(1981)报道年发生完整的四代,而宜春地区多数县则认为年发生 Chilo suppressalis algebra occurs in our province, all over the observation and research, but from the information reported and reflected the situation, understanding of inconsistency, a greater discrepancy. For example, Chen Dong (1979) reported that the four generations of Ganzhong are dominant and some are three generations, while many counties in the region consider the three generations as their mainstay and some four generations. Qingjiang County Plant Protection Station (1981) reported a complete four generations of the year, while most counties in Yichun that year occurred