辽宁省大豆胞囊线虫病发生分布研究

Studies on Occurrence and Distribution of Soybean Cyst Nematode in Liaoning Province

大豆胞囊线虫病是中国大豆生产上的最重要的病害之一。本研究通过测定2006~2008年辽宁省26个地区大豆田中的大豆胞囊线虫胞囊密度,明确大豆胞囊线虫在辽宁省的发生和分布情况。在所调查的26个市（县、区）中,88%的大豆产区含有大豆胞囊线虫,平均每百克风干土中超过10个胞囊的地块占73%。其中康平县西关乡的大豆胞囊线虫胞囊密度最高,达到54.33,而开原市、东港市和桓仁满族自治县的大豆胞囊线虫胞囊密度为0,大多数地区的大豆胞囊线虫胞囊密度介于20~55之间。

Soybean cyst nematode （SCN Heterodera glycines Ichinohe） is one of the most important na- tionwide soybean pests in China. Density of SCN in 26 areas of Liaoning Province during 2006 - 2008 was determined for clarifying the distribution of SCN. The results showed that Heterodera glycines was found in 88% areas, and the number of cyst per 100g soil was more than 10 in 73% areas. The cyst density of Kangping was the biggest, up to 54.33, but the cyst density of Kaiyuan, Donggang and Huanren was 0, most areas were between 20 to 55.