大豆孢囊线虫病又叫大豆萎黄病、大豆根线虫病或“火龙秧子”,是一种毁灭性的病害.在河南、河北、北京、内蒙以及东北三省均有发生.特别是黑龙江、吉林地区近年来发生更为严重.大豆孢囊线虫是一种低等的蠕虫动物.在土壤里以孢囊方式越冬,翌年5月上旬孢囊内的卵孵化成幼虫, Soybean cyst nematode disease is also called soybean yellow disease, soybean root-knot nematode disease or “fire dragon seedlings”, is a devastating disease occurred in Henan, Hebei, Beijing, Inner Mongolia and northeastern provinces, especially in Heilongjiang and Jilin More serious in recent years.Step cyst nematode is a kind of lower worms in the soil by cyst in the winter, in early May next year cysts eggs hatch into larvae,