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绿色植物通过叶片制造有机物,枝繁叶茂是作物丰产的前提,它可以增大单位空间内叶的总面积,使植物最大限度地接受太阳光照射,提高光合作用的效率。复种、间作、套种不但能使植物枝繁叶茂,而且还能充分利用土地、阳光等多种资源,创造最大的生物产量,在提高复种指数方面效果明显。
Green plants produce organic matter through leaves, and flourish is the premise of high yield of crops. It can increase the total area of leaf in unit space and make plants receive sunlight to the maximum extent and increase photosynthesis efficiency. Intercropping, intercropping and intercropping not only make the plants flourish, but also make full use of various resources such as land and sunshine to create the maximum biological yield, and the effect is obvious in improving the multiple cropping index.