水稻生长日历模拟模型及其应用研究

Studies on the Rice Growth Calendar Simulation Model (RICAM) and It's Application

本研究应用系统模拟语言CSMP,构造了水稻物质生产、产量因子形成和生育过程的计算机模拟模型.田间试验证明:模型输出结果与实际观察值拟合较好,表明模型在总体上能较好反映水稻生育过程.由于模型的逐日模拟结果反映水稻生育过程随时间变化的发展趋势,故称水稻生长日历模拟模型RICAM(RIce growth CAlendar Model).RICAM可较好反映品种的源库关系,模拟参数变化对生长的影响以及预测水稻品种的产量潜力.

This paper presents a mechanical simulation model RICAM (RIce growth Calendar imula-tion Model which consists of three submodels(i. e. source activity, sink capacity and growth-de-velopment processes), to simulate the ecophysiological processes of photosynthesis. respiration. assimilate distribution.organogenesistphysiological -age increase,leaf area growth and yield component formation, simulated yield,dry matter,leaf area index,leaf number index and tiller number were compared to the data obtained from the field experiments conducted from 1987 to 1989. The general trend is that the predicted values agreed well with the measurements in each of three years and correlation coefficients between the predicted and the measured values are statistically significant. The model RIACM is therefore capable of describing the yield formation and growth processes and can be used for predicting the yield potential, analysing the source-sink relation and effects of the crop parameter changing on growth processes and determining optimal manage-ments in practices of rice production.