On the basis of land equivalent ratio of inter cropping and mixed cropping the theory and method of quantitative evaluation of inter-cropping and mixed cropping were discussed in this paper.

• 在剖析间混作土地当量比的基础上，本文针对间混作群体的特点，对间混作效果定量评价的理论与方法进行了研究，提出了间混作当量的概念、计算公式，对其应用范围及内涵进行了讨论。