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大豆孢囊线虫病又叫黄萎病,根线虫,火龙秧子等。大豆受害后,植株明显矮化,似缺氮、缺水状。主根和侧根发育不良,须根增多。整个根系成发状须根,主根和须根上附着大量白色至黄白色针尖大的小颗粒,即线虫的孢囊,孢囊多时密集成排。被害根很少或无根瘤。大豆根被线虫寄生后,发育不良,最后褐变腐烂。病株症状出现迟早及程度与根系着虫时期及数量有直接关系。线虫着根早、虫量大,症状出现早而且明显。因孢囊线虫在土壤内分布不匀,大豆根部着虫量不等,大豆
Soy cyst nematode disease also known as Verticillium wilt, rootworm, fire dragon seedlings. Soybean victims, plants dwarfed, like nitrogen deficiency, lack of water. Main root and lateral root dysplasia, fibrous roots increased. The entire root into a hair like fibrous roots, root and fibrous roots attached to a large number of white to yellow-white tip large particles, namely nematode cysts, cysts often dense rows. Harmful roots or no root nodules. Soybean root parasitic nematodes, poorly developed, the final decay brown rot. Disease symptoms appear sooner or later, and the degree and the root system and the number of pests have a direct relationship. Nematodes rooted early, the amount of insects, the symptoms appear early and obvious. Due to uneven distribution of cyst nematode in the soil, the amount of soybean roots ranging from insects, soybeans