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在湖南、湖北、广东、广西、浙江和河南等省(区)主产区调查和鉴定,红麻根结线虫病病原线虫有南方根结线虫(Meloidogyne incognita)1号和2号小种,爪哇根结线虫(M.javanica)和花生根结线虫(M.arenaria)2号小种。南方根结线虫为优势种,其在湖南沅江麻田一年可完成四代。它们都不为害棉花、小麦、花生、芝麻、苎麻、高粱和玉米。幼虫主要分布在0～40厘米土层内。0～10厘米土层内幼虫数的波动在红麻生长季节有4个高峰,收获后还出现一个高峰。病原线虫以幼虫和卵主要在病残中越冬,清除病残可压低初次侵染。实行轮作可减轻病害和增产。重病田用D—D混剂,涕灭威或棉虫灵处理土壤效果良好。文中对抗线虫育种工作作了讨论。
In the main producing areas of Hunan, Hubei, Guangdong, Guangxi, Zhejiang and Henan, the pathogenic nematodes of Meloidogyne incognita were investigated and identified. The first and second race of Meloidogyne incognita, M.javanica and M.arenaria race 2. Southern root knot nematodes as the dominant species, which can be completed four generations in Hunan Yuanjiang Ma Tian a year. They do not harm cotton, wheat, peanuts, sesame, ramie, sorghum and corn. Larvae are mainly distributed in 0 ~ 40 cm soil layer. The fluctuation of larvae number in 0-10cm soil layer had 4 peaks during kenaf season and a peak after harvest. Pathogenic nematodes to larvae and eggs in the sick mainly in the winter, remove the sick can reduce the initial infection. Rotation can reduce disease and increase production. Severe disease with D-D mixture, aldicarb or cotton insects Ling soil treatment is good. The article discussed the breeding of nematode.