本研究于2011-2017年对山西省主要市(县)小麦上孢囊线虫的发生与分布进行了较系统的调查研究,从运城、晋城、临汾、长治、晋中、太原等市小麦产区百余个乡镇采集和分离小麦根及根围土壤样品1 131份,其中336份检出有孢囊线虫,检出率为29.7％;运城市和临汾市小麦根及根围土壤样品孢囊检出率高,分别达到42.3％扣32.5％,晋中市、长治市、太原市以及晋城市等地区也发现有不同程度的分布.因地区、栽培制度和土壤质地等的不同,土壤中线虫的群体密度也存在较大的差异,白雌虫密度最高的群体分布在运城市的一些地区(每100mL土壤中白雌虫数平均达到101个).通过形态学鉴定明确山西省小麦上孢囊线虫群体种类较为单一,均为禾谷孢囊线虫Heterodera avenae,未发现我国小麦上另一重要的孢囊线虫种类——菲利普孢囊线虫H.filipjevi.小麦孢囊线虫在山西不同地区的发生和分布情况为山西省针对性地开展小麦上孢囊线虫的综合治理提供了有价值的信息.%During 2011 to 2017,occurrence and distribution of cyst nematodes on wheat were surveyed in Shan xi,China.1 131 soil and root samples were collected in 6 major wheat production areas,including Yuncheng,Jincheng,Linfen,Changzhi,Jinzhong,and Taiyuan.336 samples were detected with cyst nematodes,with the total incidence of 29.7％.The highest incidence occurred in Yuncheng and Linfen,with the rate of 42.3％ and 32.5％,respectively.The cyst nematodes infection and distribution were also detected in Jinzhong,Changzhi,Taiyuan and Jincheng.The highest average density of white females was in Yuncheng,which reached 101 white females per 100 mL soil.All the cyst nematodes populations detected in wheat fields of Shanxi were identified as Heterodera avenae (CCN) based on morphological identification,while no H.filipjevi population was detected.The results provide the data on incidence and distribution of CCN in different localities of Shanxi Province,which would be useful for proper integrated management of CCN in the province.
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