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禾谷孢囊线虫(Heterodera avenae)是我国小麦生产上的一个新线虫病害,一般使产量损失20％-30％,严重达50％。目前在调查该线虫发生危害区域时存在因调查时期和方法不当而引起一些误差。为了准确、快速查明其在我国麦区的发生情况和危害程度,为制定相应防治对策,作者在小麦不同生育期,采用不同方法进行了取样检测。 现已明确确定某地有无禾谷孢囊线虫发生、危害程度及田间群体密度的最佳调查时期为小麦抽穗至扬花期。此时罹病小麦地上
Heterodera avenae is a new nematode disease in the wheat production in our country, which usually causes the loss of yield by 20% -30% and the seriousness by 50%. At present, there are some errors when investigating the nematode harm area due to improper investigation and improper methods. In order to accurately and quickly identify the occurrence and harm degree of wheat in our country, in order to formulate the corresponding control measures, the authors conducted sampling tests using different methods during different growth stages of wheat. It has been clearly identified whether there is a cereal cyst nematode occurrence, the degree of harm and field population density of the best period of investigation for the wheat heading to flowering. At this time sick wheat on the ground