论文部分内容阅读
近年来,小麦孢囊线虫病已成为我国小麦生产上的重要病害之一,而掌握病原线虫的侵染动态是病害防控的基础。为此,河南农业大学植物保护学院有关科研人员在田间条件下,对2种孢囊线虫—禾谷孢囊线虫(Heterodera avenae)和菲利普孢囊线虫(H.filipjev)i在河南郑州的侵染动态进行了比较研究。研究结果显示:小麦出苗后2周即可发现孢囊线虫的二龄幼虫侵入到小麦根内,4周后少量二龄幼虫发育为三龄,6周后
In recent years, wheat cyst nematode disease has become one of the most important diseases in wheat production in our country. To master the infection dynamics of pathogenic nematodes is the foundation of disease prevention and control. To this end, Henan Agricultural University Institute of Plant Protection researchers in the field conditions, the two cyst nematodes - Heterodera avenae and Phillip neplata (H.filipjev) i in Zhengzhou, Henan Province, the infection Dynamic comparative study. The results showed that the 2nd instar larvae of cyst nematode invaded into wheat roots 2 weeks after the emergence of wheat. A few second-instar larvae developed to the third age after 4 weeks. After 6 weeks