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根据松毛虫按时间序列有节奏的取食规律，从春季松毛虫上树终止之日起，逐日测定松毛虫群体中个体的平均排粪量，利用排粪量与食叶量的相关关系计算出通日食叶量、残害量，再利用数学回归方法，建立了松毛虫逐日取食曲线的回归模型与逐日累计取食曲线的回归模型。本文中的取食量采用重量单位来描述，从而避免了用针叶长短测量取食量时针叶粗细不一所产生的误差。取食量数学模型的建立为准确的定量研究松毛虫种群动态与食叶量的关系提供了科学依据。
According to the rhythmic feeding rules of Dendrolimus punctatus, the average daily excretion of individuals in Dendrolimus punctatus population was determined daily from the termination of the tree in the spring, and the correlation between the amount of defecation and the amount of leaf was calculated Day-old leaf amount, the amount of damage, and then use mathematical regression method to establish a regression model of daily feed curve of pine caterpillar and a daily cumulative feed curve regression model. The food intake in this paper is described in terms of weight units, which avoids the error of varying the thickness of the needle when measuring the food intake with the length of the needle. The establishment of the mathematical model of food intake provides a scientific basis for accurate quantitative study of the relationship between population dynamics of pine caterpillars and the amount of leaf food.