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云南省耿马县是烟草根结线虫病发生的重灾区,为了摸清该县烟草根结线虫病的发病因素,2012年在全县病情普查的基础上,对勐撒、贺派、四排山等3个主要烟草种植乡病原线虫、寄主情况和环境条件进行了实地调查和综合分析。结果表明,病害发生率和严重程度都大大超过了往年;危害烟草的根结线虫种类主要为花生根结线虫和爪哇根结线虫;抗病品种缺乏、管理粗放和气候异常是近年来当地烟草根结线虫病爆发的主要原因。根据发病特点,提出了以农业防治为主的烟草根结线虫病应对措施。
Gengma County of Yunnan Province is the hardest hit area of tobacco root-knot nematode disease. In order to find out the incidence of tobacco root-knot nematode disease in this county, on the basis of the general survey of the disease in 2012, Hill and other three major tobacco planting pathogenic nematodes, host conditions and environmental conditions conducted a field survey and comprehensive analysis. The results showed that the incidence and severity of diseases were much higher than in previous years. The root-knot nematodes that endanger tobacco were mainly root-knot nematodes and root-knot nematodes. The lack of resistant varieties, extensive management and abnormal climate were the main reasons that tobacco root The main reason for the outbreak of knot nematodes. According to the characteristics of the disease, we put forward the countermeasures of controlling root-knot nematodes in tobacco industry.