杉木半穿刺线虫寄主及混交林效应的研究

杉木半穿刺线虫新发现三种寄主植物杉木、柳杉、野柿，原国内外报道寄主植物有柑桔、甜橙、橄榄、葡萄、紫丁香、核桃、杏树、海棠、苹果、梨、柿树、构桔、黄杨、桂花、兰棕等．杉木与非杉木半穿刺线虫寄主植物马尾松、酸枣、泡桐、火力楠、湿地松、楠木、檫树、油桐、枣柏、木荷等混交，可大大降低虫口密度，促进杉木生长，是一种较好的控制线虫密度的营林措施；杉木与杉木半穿刺线虫寄主植物柳杉混交，其虫口密度大大增加

Studies on the Range of Host of Tylenchulus Semipenetrans and the sffect of Mixed Forests

Exccpt for scventeen kinds of reported hosts,there still are three kinds of new hosts for Tylenchulus Semipenetrans found recently in China.The hosts are China fir,Crptomeria fortunei,Diospyros Kaki Cilvestris respecively.According to the studies,the measure,Chinese fir mixed with Pinus massoniana,Cinnamomum camphora and Sassafras tzumu ctc,can rcduce the density of Tylenchulus semipenetrans greatly and promote Chinese fir'S growth,so it is benefical to control the density of Tylenchulus Semipenetrans.On the contrary,if Chinese fir are mixed with hosts of Tylenchulus Semipenetrans,the density would increase greatly.