【摘要】 通过已感土壤根结线虫病害的胡萝卜（Ｄａｕｃｕｓ　ｃａｒｏｔａ）生 产田取样调查发现，南方根结线虫居群对我国胡萝卜生产的危害较大，造成的减产损失达 ３０％。研究表明防治南方根结线虫居群危害，应以保护农田生态环境为前 提，并根据根结线虫属于专食性植物寄生虫的生物学特征，实行农作物品种轮作。更多还原

【Abstract】 From practical sampling research of Daucus carota infec ted with the disease of root-Knot nematodes,we find that M.incognita commun ity is very harmful to Daucus carota production, and yield reduced more than 30%.The result of the investigation shows that the control measures for M.incognita community endangering of Daucus carota production should be based on ecosystem protection of the crops and to rotate the crops according to th e biological character of specific plant parasite.更多还原