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茶苗的线虫病,在我省发生比较普遍,常为害幼龄茶树。1974年,罗定县金鸡公社播下茶籽150担,由于线虫为害,死苗达9成以上。1975年,我们在海南岛的通什、红卫、南海和岭脚等茶场调查了茶籽苗圃101.7亩,线虫的发病面积占98.8％。因此,茶苗的线虫病已成为当前新区发展茶叶生产的一个严重障碍。据国外资料记载,在茶苗和茶树上寄生的线虫有30多种。我省初步调查为害茶苗及幼龄茶树的主要是一类根结线虫(Meloidogyneincognita等),故称茶根结线虫病。该病是由
Tea worm nematode disease occurs more commonly in our province, often damage young tea trees. In 1974, Luoji County Golden Rooster sow sowing 150 dan, due to nematode damage, dead seedlings up 90%. In 1975, 101.7 mu of tea seed nurseries were surveyed in tea plantations of Tongshu, Hongwei, Nanhai and Lingtu in Hainan Island. The incidence of nematodes accounted for 98.8% of the total. Therefore, the nematode disease of tea seedlings has become a serious obstacle to the development of tea production in the new district. According to foreign records, there are more than 30 species of parasitic nematodes on tea seedlings and tea trees. Preliminary investigation in our province is the main damage to tea seedlings and young tea tree is a root-knot nematode (Meloidogyneincognita, etc.), it is called tea root-knot nematode disease. The disease is caused by