双季晚稻物质生产与产量形成的模拟及其应用研究

A Simulating Model for the Dry Matter Production and Yield Formation of Late Double Harvest Rice and Its Application

本研究试对模拟模型如何有效地运用于作物生产系统的栽培技术优化进行初步探索。建立了包含太阳辐射、温度和日长等气候因素以及基本苗数、施肥等栽培技术因子的双季晚稻物质生产和产量形成的模拟模型,并应用模型进行应变决策分析。

With an attempt on how to use the simulating model effectively in the optimization of crop cultivating techniques, a suggestion was put out. First of all, a crop yield formation simulating model, which must contain controllable factors (the cultivating factors) and non-controllable ones, should be built up for the forecast of crop yield; and then, use the built model to make strategic decisions according to changes of the environment. On this basis, a dry matter production and yield formation model is introduced from the point of dry matter production, accumulation, distribution and rice sink, for the late double-harvest rice. The model contains climatic factors, such as radiation, temperature, day-length, and two cultivating factors, i.e. the number of seedlings and the amount of fertilizer applicated. Moreover, it is used in decision making according to changes of the environment , with regarding to the average temperature of the earlier stage and five days after heading as a standard to divide climatic condition type.