青海省小麦孢囊线虫病发生和分布特点  

Occurrence and distribution of Heterodera avenae in Qinghai Province

作　　者：侯生英[1] 王爱玲[1] 张贵[1] 彭德良[2] 黄文坤[2] 

机构地区：[1]青海大学农林科学院植保所,西宁810016 [2]中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室,北京100193

出　　处：《植物保护》2011年第3期139-141,156,共4页Plant Protection

基　　金：公益性行业(农业)科研专项(200903040);科技部国际合作项目(2009DFB30230);国家自然基金国际合作项目(30921140411)

摘　　要：小麦孢囊线虫病是青海省小麦青稞产区的主要病害之一。2007-2010年,采用随机取样方法对青海省小麦孢囊线虫病的发生、分布情况进行了调查。调查结果表明,小麦孢囊线虫病主要分布在青海省西宁、海东、海北、黄南、玉树、海西州6个地区,在不同海拔、不同生态区均有分布,但不同生态区以及同一生态区不同地块间发生量差异较大。垂直分布调查结果表明,同一地块中禾谷孢囊线虫主要分布在20 cm以上的土层中。Heterodera avenae （cereal cyst nematode, CCN） is one of the main diseases of wheat and barley in Qinghai Province. The occurrence and distribution of CCN was investigated in Qinghai during 2007-2010. The results of horizontal distribution showed that CCN occurred seriously in Xining, Haidong, Haibei, Huangnan, Yushu and Haixi in Qinghai. CCN could occur at different altitudes and in different ecological areas from 1 700 m to 3 900 m. The incidence rate was significantly different between different ecological regions and different plots in the same region. The results of vertical distribution showed that CCN mainly occurred in soils over 20 cm in depth in the same plots.

关 键 词：小麦孢囊线虫病 发生 分布 

分 类 号：S435.12[农业科学—农业昆虫与害虫防治]