CAJ | 학술논문

调查了湖北省禾谷孢囊线虫（ Heterodera avenae）病的分布。在襄阳市重病田采样观察了禾谷孢囊线虫不同龄期的形态，研究了不同龄期线虫的发生动态。结果表明，禾谷孢囊线虫在襄阳、天门、潜江、钟祥、汉川都有发生，以襄阳最多，平均每100 mL土样含有效孢囊12．5个。在小麦播种后20 d就有2龄幼虫侵入根部，播种后143 d根内幼虫数量达到顶峰。入侵的幼虫在根内定居取食为害，在播种后158 d发育成白雌虫而露出根外，在播种后174 d白雌虫数量达最高峰。
조사료호북성화곡포낭선충（ Heterodera avenae）병적분포。재양양시중병전채양관찰료화곡포낭선충불동령기적형태，연구료불동령기선충적발생동태。결과표명，화곡포낭선충재양양、천문、잠강、종상、한천도유발생，이양양최다，평균매100 mL토양함유효포낭12．5개。재소맥파충후20 d취유2령유충침입근부，파충후143 d근내유충수량체도정봉。입침적유충재근내정거취식위해，재파충후158 d발육성백자충이로출근외，재파충후174 d백자충수량체최고봉。
The occurrence and distribution of cereal cyst nematode ( CCN) ( Heterodera avenae) were investigated in Hubei province .Through sampling in seriously -diseased wheat field in Xiangyang city , we observed the morphology of H.avenae at dif-ferent developmental stages , and studied its population dynamics .The results showed that this nematode distributed in Xiangyang , Tianmen, Qianjiang, Zhongxiang and Hanchuan .The most serious CCN disease occurred in Xiangyang , in which there were 12.5 living cysts in 100 mL soil sample.The 2-instar larvae of CCN began to intrude into the young wheat roots on the 20th day after so-wing, and the larvae density in the roots reached a peak on the 143rd day after sowing.The larvae in wheat roots fed, did harm, and developed to white females on the 158th day after sowing.The developed white female came out from wheat roots , and its density reached the maximum on the 174th day after sowing .