水稻高产群体是一个高度的自动调节系统,但调节能力有限。高产栽培应穗粒兼顾。产量及其构成因素与处理因子间存在着因果关系,一般呈二次曲线。生育期间群体积累的干物质较多,谷草比较大是高产的物质基础。提高产量主要依靠增加后期光合势、干物质积累和谷草比。各项栽培措施相互配合,寻求最优组合,可收到既高产又经济的效果。 The rice high-yielding population is a highly automated system with limited ability to regulate. High-yielding cultivation should be both grain and grain. There is a causal relationship between yield and its composition and processing factors, which is generally a quadratic curve. During the growing period, the group accumulates more dry matter, and the larger the straw is the material basis of high yield. Increase the yield mainly by increasing late photosynthetic potential, dry matter accumulation and grain to straw ratio. The various cultivation measures cooperate with each other to find the optimal combination to receive the effects of both high yield and economy.