机构地区: 福建农林大学植物保护学院
出 处: 《武夷科学》 2001年第1期24-29,共6页
摘 要: 应用害虫种群系统控制的状态空间方程和作用因子添加分析法 ,模拟 1%苦皮藤乳油对小菜蛾种群控制作用。结果表明 ,其控制机理主要是对小菜蛾成虫产卵的显著忌避作用 ,尤其是在种群发展的初期 ,由于其显著的的忌避作用 ,降低田间卵量 ,使其种群数量明显降低下来 ,从而有效控制其为害。 Based on the natural population life tables of the diamond back moth (DBM), Plutella xylostella L., the control effectiveness of celangulim on DBM was simulated and evaluated by using state-space equation and addition analysis method of population systemic control. Results showed that the control mechanism of celangulim on population of DBM was it's deterrent effect significant on the adult of DBM. Especially in the initial stages of population development, the egg numbers of DBM reduced notability due to the strong deterrent effect on adults of DBM, then, the population numbers and the harm of DBM population reduced significant.