Development of Dynamic Model for Predicting Growth and Yield of Rice

1.水稻气象关系模拟模型的建立将水稻生长发育、干物质生产和产量形成过程的知识和试验数据相结合，建立了水稻气象关系动态模拟模型(SIMRIW)。SIMRIW令人满意地解释了美国和日本水稻生长和产量的位置和年度变化。它还解释了菲律宾国际水稻研究所(IRRI)基于每日天气观察到的生长和产量形成动态。SIMRIW已通过IRRI分发到世界上主要的水稻研究机构，用于每个地点的验证和改进。水稻氮素效应综合评价模型的建立。将N因子引入SIMRIW，对澳大利亚京都、长野和延科的水稻栽培对比试验数据进行了分析。在此基础上，合成并验证了土壤氮素矿化速率估算模型和氮素对叶面积发育、干物质生产和器官形成过程的影响评价模型。

1. Model development for simulating rice-weather relationsA dynamic simulation model for rice-weather relations (SIMRIW) was developed by integrating knowledge and experimental data on processes of rice development, dry matter production and yield formation. The SIMRIW satisfactory explained the locational and yearly variations of rice growth and yield in the U.S.A.and Japan. It also explained growth and yield formation dynamics observed at International Rice Research Institute (IRRI) in Philippines based on daily weather.The SIMRIW has been distributed over major rice research institutes in the world through IRRI for the validation and improvement at each site.2. Synthesis of the model for evaluating nitrogen (N) effect on rice growthIn order to incorporate. N factor into SIMRIW,a analysis was made on data including those from comparative rice cultivation experiments among Kyoto, Nagano and Yanco in Australia. Based on these data, model for estimating soil N mineralization rate and one for evaluating N effect on leaf area development, on dry matter production and on organ formation processes has been synthesized and validated.