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一、引言 稻谷产量的高低与其生物产量高低及经济系数大小有关。生物产量的高低与群体光合产物积累量是密切联系的。如果光合产物形成较多,而呼吸消耗量较小,则干物质积累量增高,生物产量就高。经济系数大小则与光合产物分配有关,如果源与库的关系协调,叶片所形成的光合产物能及时运往谷粒,则经济系数就增加。无论生物产量及经济系数增加,都可能使产量提高。
I. INTRODUCTION The level of rice production is related to the level of its biological yield and the economic coefficient. The level of biological production and the accumulation of photosynthetic products are closely linked. If more photosynthetic products are formed and respiratory consumption is lower, the accumulation of dry matter is increased and the biological yield is high. The economic coefficient is related to the distribution of photosynthetic products. If the relationship between source and sink is coordinated and the photosynthetic products formed by the leaves can be transported to grain in time, the economic coefficient will increase. Production increases are possible regardless of the increase in biological and economic factors.