【摘要】 在沅江市根据不同林龄,不同立地类型选取19块有代表性的林地,根据准确测报,在林地投放赤眼蜂防治杨扇舟蛾。2次投放可控制全年杨扇舟蛾的发生,防治区食叶害虫发生率2.6%,成灾率1.9%。赤眼蜂防治杨树食叶害虫操作易、成本低、效果长,群众易接受,具有显著的生态、社会和经济效益。更多还原

【Abstract】 Based on the different age of Populur forest in Yuanjiang City,19 different sites representative of woodland were chosen.According to accurately forecast,invest in woodland Trichogramma control Clostera moths.After put ting Trichogramma in the second year control Clostera moths,leaf-eating pest control district incidence of 2.6%,1.9% rate disaster.Trichogramma control leaf-eating pests in Populur were operation easy,low-cost,longer acceptable to the masses with significant ecological,social and economic benefits.更多还原