棉蚜田间种群动态模拟模型研究

本文从棉株营养生物量与其最大载蚜量的关系出发,探讨了棉蚜田间种群消长的规律。结论从为:由于棉株供给棉蚜的营养生物量与居住场所的季节变化控制着棉蚜的增长、生翅及扩散等特征而引起蚜群的季节消长,通过分析建立了四个与棉蚜种群增长、消亡、崩溃以及棉株营养生物量的消长有关的于模型,并通过此子模型建立了棉蚜田间种群消长模拟模型。此模型能较好地描述棉蚜田间种群消长的一般规律,无疑对棉蚜种群消长规律的认识及预测具有积极意义。

STUDY ON SIMULATION MODEL FOR POPULATION DYNMICS OF COTTON APHID IN COTTON FIELDS

This paper dears With the rule of growth and decline of cotton aphid( Aphis 9ossypii) population from the relationship between cotton nutrition biomass and the maximum number of aphid on it. It ha been suggested that the population dynamics of cotton aphid on cotton are correlated with the nutrition biomass of leaves which influenced the growth, wings-forming and dispersion etc. of cotton aphid. Through system analysis we introduced four submodels for describing respectively the growth, decline and collapse of cotton aphid population and the seasonal fluctuation of the nutrition biomass of cotton. A dynamic model of cotton aphid, which was better to explain the rule of growth and decline or aphid population at the growing season, was introduced by using these four submodels. This model has some significance for hetpin9 us to recongnize the rule of growth and prediction of cotton apmid population.