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茶苗根结线虫病是国内外茶区茶苗的毁灭性病害。斯里兰卡、印度尼西亚、日本、印度、中非等国及我国的台湾、浙江、广西、广东、四川等省都有发生。1975年华南农学院和广东海南岭头茶场茶科所曾对海南五个茶场的100多亩苗圃进行调查,发病面积达到98％,其中死苗率达80～90％的苗圃约占20％。1976年广东省罗定县金鸡公社播种茶籽150担,本可供3000亩地的茶苗,但由于此病的侵染,只够种50亩。同年白马岭茶场播种茶籽30担,茶苗全部因发病死亡。而目前在防治方面尚未有一种方法或药物能彻底消灭苗床上的根结线虫。
Tea root-knot nematode disease is a devastating disease in the tea plantation at home and abroad. Sri Lanka, Indonesia, Japan, India, Central Africa and other countries as well as China’s Taiwan, Zhejiang, Guangxi, Guangdong and Sichuan provinces have occurred. In 1975, South China Agricultural College and Hainan Tea House in Lingtze Chachang, Hainan Province, investigated 100 mu nurseries in five tea farms in Hainan Province, with the disease area reaching 98%. About 20% of nurseries with 80 ~ 90% dead seedlings were investigated. In 1976, Luoding County, Guangdong Province, Golden Rooster Commune sowing 150 tea seedlings, the 3000 acres of tea seedlings may be available, but because of the disease, only enough to plant 50 acres. In the same year, White Horse Tea Plantation 30 sowing tea seedlings, tea seedlings all died due to morbidity. At present, there is not yet a cure or cure for root-knot nematodes on the seedbed.