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合理的间套作种植模式具有高产高效及环境友好的特点,可能成为未来可持续农业的重要组成部分。光能的高效利用是间套作群体产量占优的主要原因之一。论文综述了计算间套作群体光能截获及分配的半经验模型及理论模型,分析了间套作群体产量优势形成的生理生态基础。间作套种可形成有利于作物吸收光能的冠层结构,或者可促进作物的光合速率,或者可改变作物的收获指数。对于共生期较长的间套作群体而言,优势作物对光能的高效截获和劣势作物对光能的高效利用是群体产量优势形成的主要原因,而对于共生期较短的间套作群体而言,两种作物光能吸收量的增加是该群体高产的主要驱动力。
Reasonable intercropping for planting is characterized by high production, high efficiency and environmental friendliness, which may become an important part of sustainable agriculture in the future. The efficient use of light energy is one of the main reasons why the yield of a group is dominant. The paper summarizes the semi-empirical models and theoretical models of intercepting and distributing light energy of intercropping sets and analyzes the physiological and ecological basis for intercrop yield. Intercropping can create canopy structures that facilitate the absorption of light energy by the crop or can promote the photosynthetic rate of the crop or change the harvest index of the crop. For the long intercropping population, the main reason for the formation of population yield superiority is the high efficiency interception of the dominant crop for light energy and the efficient use of light energy by the inferior crop. However, for the intercropping period shorter intercropping group In terms of both crops, the increase of light energy absorption is the main driving force of this group of high yield.