白背飞虱种群系统控制模拟研究

Studies on the Population System Control Simulation of Whiteback Planthopper(WBPH)

利用状态空间方程方法，通过白背飞虱自然种群生命表参数和改进的等期ｌｅｓｌｉｅ矩阵模型，模拟广东海陵岛白背飞虱在早、晚两造稻上的发生动态。通过输入品种抗虫性和不同药剂的控制矩阵，分析了白背飞虱种群大发生的机制：即既种植高感品种，又施用广谱性杀虫剂，将导致白背飞虱爆发；实施种群系统控制的策略为：推广种植抗虫品种或施用特异性杀虫剂。

In this paper,the dynamics of whitebacked planthopper(Sogatella furcifera(Horvath))on early and late crope in Hailing Island Guangdong Province were simulated bymeans of the state-space equations,the life table paremeters of WBPH population and Leslie popu-lation matrix model.The control matricesof the resistence of rice varierties and the different insec-ticides were input to the state-spece equations,which indicated the mechanism of the outbreaks ofthe WBPH population and the strategic methods of the population system control.