摘要
在竹林周围或幼林内空地种植油菜繁殖菜蚜,以增加瓢虫种群数量。油菜收获后,瓢虫转迁入竹林捕食竹蚧,对竹蚧的控制效果可达90％以上。
Nesticoccus sinensis [Hom.: Pseudococcidae] and Rhizococcus transversus [Hom.: Eriococcidae] are two important pests of bamboo forest in southern Jiangsu. During 1984-1987, oil seed rape was interplanted in and around the fallow spaces of a six-years old bamboo forest in Jintan County. The aphids, mostly Bravicoryne brassicae, infesting rape attracted large numbers of coccinellids, predominantly, Harmonia axyridis and H. obscurosignata. After the harvest of rape, the predators dispersed onto bamboo to prey on the scales and.multiplied their populations. As a result, the number of scales per bamboo plant was reduced by 97-99%.
关键词
竹
竹蚧
瓢虫
诱集
油菜
生物防治
Sravicoryne brassicae Nesticoccus sinensis Rhizococcus transversus Harmonia axyridis Harmonia obscurosignata bamboo pest augmentation
