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应用适应于种群动态控制的状态空间分析法，通过生命表参数模拟小菜蛾种群数量动态。通过输入不同的生物因子（小菜蛾颗粒体病毒、拟澳洲赤眼蜂和苏云金杆菌）对小菜蛾种群动态控制的作用，研究这些生物因子的组合对小菜蛾种群动态的控制。模拟结果表明，施用小菜蛾颗粒体病毒与散放赤眼蜂和施用苏云金杆菌组合应用，在种群趋势指数比较高的情况下也可能控制小菜蛾种群数量的增长
The state space analysis method adapted to the dynamic control of population was used to simulate the population dynamics of diamondback moth through the life table parameters. The effects of different biological factors (Plutella xylostella, Trichogramma quadratus and Bacillus thuringiensis) on population dynamics of diamondback moth (Plutella xylostella) were investigated, and the combination of these biologic factors on population dynamics of Plutella xylostella was studied. The simulation results showed that applying Plutella xylostella in combination with Trichogramma bracteata and Bacillus thuringiensis could control the population increase of Plutella xylostella when the population trend index is relatively high