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研究结果表明，半穿刺线虫病在福建省各杉木产区均有分布，其中顺昌、建阳、沙县、南平、政和、连江等县（市）受害较重；苗圃受害较轻。该线虫自然分布与土壤质地、坡向、林龄３ 个生态因子呈极显著相关；与立地条件、炭疽病病情指数显著相关；与土壤类型相关不显著。轻壤土与砂壤土、幼龄林与中龄林、阴坡线虫数量较多。不论生态因子如何，该线虫集中分布于０～４０ ｃｍ 土层中，但不同林龄、土壤质地、坡向对该线虫的垂直分布有显著的影响
The results showed that the half-thorn nematodes were distributed in all the fir-producing areas in Fujian Province. Among them, Shunchang, Jianyang, Shaxian, Nanping, Zhenghe, Lianjiang and other counties (cities) were seriously injured; the nursery was less affected. The natural distribution of the nematode was significantly related to soil texture, aspect and stand age, and was significantly correlated with site conditions and anthracnose disease index. There was no significant correlation with soil type. Light loam soil and sandy loam, young and middle-aged forest, shade more number of nematodes. Regardless of ecological factors, the nematodes were concentrated in 0 ~ 40 cm soil layer, but different age, soil texture and aspect had a significant effect on the vertical distribution of the nematodes