1986年五月下旬,在山东农业大学泰安实习农场果园里的柿树(Diospyros kakiL.f.)根部,发现一种为害柿树根的半穿刺寄生线虫—柑桔根线虫(TylenchulusSemipenetrans Cobb)。这种线虫过去仅在我国南方有为害柑桔树的报道,是南方柑桔产区危害较严重的病害。但在我国北方地区,尤其是在山东省迄今尚未见为害柿树的报道。现简要报道如下。 In late May 1986, a root-punctuated parasitic nematode called TylenchulusSemipenetrans Cobb was found at the root of Diospyros kaki L.f. in the orchard of the Tai’an internship farm of Shandong Agricultural University. In the past, this species of nematode was reported to be harmful to citrus trees in southern China. It is a more serious disease in southern citrus producing areas. However, in northern China, especially in Shandong Province, no reports of persimmon trees have been reported so far. Now briefly reported as follows.