国内有关文献均记载直纹稻苞虫以幼虫或卵、蛹在当地越冬。本研究通过两年对南阳市直纹稻苞虫初见雌成虫卵巢发育情况解剖分析和对当地发生情况系统调查表明:本地每年始见雌成虫卵巢发育均在四级以上,且均已交配,末代幼虫在杂草上不能发育到蛹即死亡;越冬期多处调查未发现任何虫态;当地上、下两代幼虫发生数量悬殊;该虫成虫和稻纵卷时螟成虫有明显的同步发生现象。据此认为,河南南阳直纹稻苞虫每年初始虫源来自南方。 The domestic literature are documented in the larvae or egg rude insects, pupae in the winter. In this study, anatomical analysis of ovarian development of female adults and the local investigation of the occurrence of rachis worms in Nanyang City in the past two years showed that the development of ovaries in female adults was above Grade IV every year, The larvae could not grow to pupa in the weeds, and they died. In the wintering period, no insect state was found in many surveys. The number of larvae in the upper and lower generation lagged disproportionately. There was a significant synchronous phenomenon between the larvae and the rice larvae . Accordingly, that the initial insect pests of Nanyang, Henan, each year from the South.