花生根结线虫病的病原线虫属于园虫动物门,线虫纲,垫刃线虫目,异皮线虫科,根结线虫属。是国家规定的植物检疫对象之一。花生根结线虫病,群众称为地黄病、黄身病、矮黄病。它危害大,损失严重,一般发生年份减产四成左右,重的减产八成以上,严重田块收不够种子,地上部茎叶损失50％以上。该病症状特点是地上部棵小叶黄,根系紊乱,其上生成串的小米粒至绿豆大的不规则形虫结,整块地出现成片高低不平的长 Pathogenic nematodes of peanut root-knot nematodes belong to the family of garden worms, nematodes, nematodes, nematodes, root-knot nematodes. Is one of the national phytosanitary objects. Peanut root knot nematode disease, the masses known as rehmannia, yellow body disease, short yellow disease. It is a major hazard that causes serious losses. Generally, about 40% of the annual output is reduced, and over 80% of the heavy output is reduced. Seeds in the serious field are not enough, and the stems and leaves above ground are lost by 50% or more. Symptoms of the disease is characterized by yellow leaf patches on the ground, the root system disorder, which generated a string of millet to mung bean irregularly large irregular knot knot, the whole piece into a rugged long