茶苗根结线虫病又称根瘤线虫病,是一种危害性较大的世界性病害,有些地区的苗圃常因此病而造成大量死苗乃至全圃被毁。目前已知我国浙江、广东、广西、四川、云南、贵州及台湾等省(自治区)均有发生,而浙江省除舟山地区尚待查明外,其他各地区先后都已有发现。鉴于此病对茶苗危害的严重性,多年来浙江农业大学植保系曾对它进行了调查研究,除了已初步明确其发生规律、农业防治措施和病原线虫主要是南方根结线虫(Meloidogyneincognita)与花生根结线虫(M.arenaria)少数是爪哇根结线虫(M.javanica),以及在杭州郊区茶苗上每年发生不完整的八代等问题 Tea root knot nematode disease, also known as root knot nematode disease, is a more damaging world disease, often resulting in nursery in some areas caused by a large number of dead seedlings and even the whole garden destroyed. At present, all the provinces (autonomous regions) in Zhejiang, Guangdong, Guangxi, Sichuan, Yunnan, Guizhou and Taiwan in our country are known to have occurred. However, except for the Zhoushan area in Zhejiang Province, which has yet to be identified, other regions have been discovered. In view of the seriousness of this disease to tea seedlings, Zhejiang Agricultural University Plant Protection Department has conducted research on it for many years. In addition to its initial occurrence and clear rules, agricultural control measures and pathogenic nematodes are mainly Meloidogyne incognita The few peanut root-knot nematodes (M.arenaria) are M. javanica, and the annual eight-generation