1993 年 48 巻 5 号 p. 819-822
Rice grain yields are highly variable because of year to year climatic fluctuations. Long-term climatic data from two sites in the Philippines were used to quantify yield variability as predicted by the CERES-Rice model. Temperature scenarios depicting 0-5.5°C increases were superimposed on the long-term historical data. With increased temperature the model predicted a sharp decline in yield. However, much of the yield decline was offset by the use of a high temperature-tolerant variety. The rice grain yields were markedly higher and the water-use efficiency improved at a CO2 concentration of 540ppm. Positive effects of climatic change were most pronounced with the improved rice variety and the high nitrogen management.