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在我省江津、重庆、万县、达县、南充、宜宾等地马尾松林区,每年松梢害虫为害达一百万亩.被害株率高达95%以上.松梢害虫主要虫种有松球果小卷叶蛾、松梢小卷叶蛾、球果螟、松梢螟四种,其中以松球果小卷叶蛾为主,是造成松梢枯倒的主因,松梢害虫生活极为隐蔽,药物防治有一定困难.为探讨利用赤眼蜂对松球果小卷蛾的防治效果.七五年在广安县天池进行了室内接种和室外放蜂试验.一、室内接种试验:1.赤眼蜂寄生率的考查:在松球果小卷娥羽化产卵期(3月中、下旬)间,于3月20日从林间收集成虫,装入广
In the province of Jiangjin, Chongqing, Wanxian, Daxian, Nanchong, Yibin Masson pine forest, annual damage of pests and millions of acres of pests damage rate of more than 95% strains of the main pine pest insects are pine cones Small leaf roller moth, pine leaf small leaf roller moth, cone fruit borer, pine needles, four species of which mainly to pine cone leaf roller moth is the main cause of pine shoots down, pine tip pest life is extremely hidden, drug control have some difficulties. In order to explore the use of trichogramma on the pine cone snakehead moth control effect in July and the year in Guang’an County Tianchi indoor vaccination and outdoor bee prophylaxis test I. Indoor vaccination test: 1 Trichogramma parasitic rate test: During the spawning period (mid-March and late-March) of the young pinecone curl, the adults were collected from the forest on March 20,