水稻需水量预报研究

Forecast of Rice Evapotranspiration

摘要: 本文以水稻需水量变化规律为依据,对水稻不同生长时段的需水量分别提出“线性回归预报”及“三次指数平滑预报”方法.实例分析表明,这两种方法预报水稻需水量效果较好,同时,对于其他作物的需水量预报,也有一定参考价值.

Abstract: According to the variation law of rice evapotranspiration,a linear regression method and a three-times smoothing method with exponential weight cocfficicnts are proposed for forecasting the rice evapotranspiration of different growing seasons respectively in this paper.The analysis of three real-world caamples shows that the two methods work well.Meanwhile; the proposed methods might be useful for forecasting the evapotranspiration of other crops.

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