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拟松线虫(Bursaphelenchus mucro-natus Mamiya et Enda)为害松树,在我省苏南山区已有发生,宁镇、茅山和苏州、无锡低山丘陵山区,发生普遍,危害严重,受害松树大量侧枝枯死以至整株死亡.就调查,1982年9月苏州七子山死材率为4%,12月发展到14%;无锡惠山的死树率达34%,南京东善桥省林科所为1%,灾情发展很快.1982年将全省丘陵山区进行了一次拟松线虫的全面调查.调查经果,苏州、无锡、南京、金坛等地均有该虫分布为害;寄生树种有马尾松、黑松、火炬松、海岸松、湿地松、赤松、晚松、刚松和雪松;一株树中不同部位线虫分布量是中部>基部>上部>根部>枝条.
The pine trees damaged by Bursaphelenchus mucro-natus Mamiya et Enda have occurred in the mountainous areas of southern Jiangsu Province. Ningzhen, Maoshan and Suzhou, and the mountainous areas in Wuxi have low levels of pests. The death of the whole plant.On the survey, in September 1982 in Suzhou Qizi Mountain deadwood rate of 4% in December to 14%; Wuxi Huishan dead tree rate of 34%, Nanjing Dongshan Shan 1% , The disaster developed rapidly in 1982, the province’s hilly mountain area conducted a comprehensive survey of parasitic nematodes surveyed by the fruit, Suzhou, Wuxi, Nanjing, Jintan and other places are the distribution of the insect pests; parasitic trees are Pinus massoniana, Pinus tabulaeformis, Pinus thunbergii, Pinus thunbergii, Pinus elliottii, Pinus thunbergii, Pinus sylvestris, Pinus koraiensis and Cedarwood. The distribution of nematode in different parts of a tree was middle> base> top> root> shoots.