多种群共存系统中天敌对稻纵卷叶螟控制作用的数学模拟

本文应用二次回归旋转组合设计的方法,建立了在拟水狼蛛、拟环纹狼蛛、食虫瘤胸蛛、粽管巢蛛、青翅蚊形隐翅虫及稻纵卷叶螟六个种群共存系统中稻纵卷叶螟各龄幼虫被捕食量的数学模型。检验表明,所建立的五个模型均能较好地模拟稻纵卷叶螟各龄幼虫被捕食量与供试的六个群之间的关系,文中还应用多年大田系统调查的资料来对模型进行较正。

THE MATHEMATICAL MODELS FOR EVALUATING THE EFFECTIVENESS OF THE PREDATORS ON RICE LEAF ROLLER IN SEVERAL POPULATIONS SYSTEMS

By mesns of rotation composite design of quadratic regression,5 mathematical models were constructed in the present paper to study the relationship between the preyed numbers of the rice leaf roller and its predators.The models had also been corrected with several years data investigated in the paddy field.According to these models,the preyed numbers of the rice leaf roller could be estimated by its densities and each predator.Therefore they could be used to forecast the population dynamics of the rice leaf roller.