【摘要】 <正> 大豆孢囊线虫(Heterodera glycines)病又称大豆萎黄病,火龙秧子。在我国东北地区发现已有八十余年历史。根据前人报道,四十年来一直是黑龙江省西部风砂干旱盐碱土地区大豆生产上的毁灭性病害。目前仍在蔓延,据调查,黑龙江省大豆受害面积已达1,000万亩,严重受害面积(减产30%以上)约有200万亩。病区大豆亩产更多还原

【Abstract】 Soybean cyst nematode is a destructive pest of soybean in Heilong jiang Province, seriously affecting soybean grown in saline-alkali soil or sandy soil in western regions of the province. Infestation of this pest presently even spreads to the eastern part of this province and provinces of Jilin, Liaoning, Hebei and Henan. However, no efficient way has been worked out for the pest control as well as the development of resistant varieties.In 1976-1981, 4 resistant sources designated Longkang SCN781, Longkang SCN782, Longkang SCN791 and Longkang SCN792 were screened by us from various soybean germplasms by growing soybeans in pots with infested soil (50—100 cysts per 100 g soil). Examination was carried out on roots of seedlings 40 days after emergence. Plants with a few cysts or no cyst adhered to their roots were considered to be resistant.更多还原