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生物产量是形成经济产量的重要基础。水稻的经济产量是谷粒,它与植物干物质的积累有着密切的关系。植物干物质的积累来自光合作用。光合作用的主要器官是绿色叶片,叶面积的大小又是决定生物产量的重要因子,是构成经济产量的重要依据。经济系数的大小,又与光合产物的分配是否协调有关。抽穗后叶片及其它部位的光合产物能及时运往穗部,经济产量就高,经济系数亦大。
Biomass production is an important basis for the formation of economic output. The economic output of rice is grain, which is closely related to the accumulation of plant dry matter. The accumulation of plant dry matter comes from photosynthesis. The main organs of photosynthesis is green leaves, the size of leaf area is an important factor in determining biological production, is an important basis for the formation of economic output. The size of the economic coefficient is related to whether the distribution of photosynthetic products is coordinated. After heading leaves and other parts of the photosynthetic products can be transported to the spike in time, the economic output is high, the economic coefficient is also large.