Optimal Integrated Control of Univoltine Pest Populations with Age Structure
Optimal Integrated Control of Univoltine Pest Populations with Age Structure
复制标题
具有年龄结构的单性害虫种群优化综合防治
作者：
C. Shoemaker
提出了一种在随机环境中计算生物、化学和栽培方法控制单化性害虫种群的最优集成和时机的方法。该程序通过两个嵌套模型来描述高维系统：一个是具有四个状态变量的随机动态规划问题，另一个是描述管理和天气对种群人口统计和作物产量的影响的更详细的微分方程模型。给出了一个典型算例，该算法将种群模型的计算量从1013次运算减少到106次运算。结果表明，该方法通过施药、早期收获和寄生虫提供的生物防治相结合的方法来防治紫花苜蓿象鼻虫。
A procedure is presented for calculating optima integration and timing of biological, chemical and cultural methods for control of a univoltine pest population in a random environment. The procedure describes a system of high dimension by two nested models: a stochastic dynamic programming problem with four state variables and a more detailed differential equation model describing the effect of management and weather on population demography and crop yield. A computational algorithm is presented which reduces computation requirements for the population model from about 1013 operations to 106 operations for a typical example. Results are presented from the application of the method to control the alfalfa weevil by a combination of insecticide applications, early harvesting, and biological control provided by a parasite.