【摘要】 本文在PearsonⅢ型分布密度函数基础上提出了PearsonⅡ函数变形模型。在对田间多点观测资料进行模拟研究后认为,该方程能广泛地适用于一类生物学现象,并在害虫为害比较天敌效果评价及防治决策研究中具有重要的应用价值。更多还原

【Abstract】 Based on the Pearson I function of distribution density, this paper presents the Pearson transform model.After the modelling study of data obtained from many points in the fields, it was considered that this equation might be widely used’ In many biological phenomena, and that it is of great value in insect injury comparison study, natural enemy effect and evaluation of decision-maing of control policy.更多还原