分析了目前常用的计算作物累积光合合量的几种方法，并提出了一种新的方法。通过比较这几种方法的拟合精度及优缺点，对这几种方法进行了评价，以图找出精确、简单而又实用的方法。 Several commonly used methods for calculating accumulated photosynthesis of crops were analyzed and a new method was proposed. By comparing the fitting accuracy and advantages and disadvantages of these methods, these methods were evaluated in order to find an accurate, simple and practical method.