| 地下水浅埋条件下冬小麦和大豆土壤水分动态预报模型研究 |
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| 引用本文： | 毛飞,张佳华,卢志光,金之庆.地下水浅埋条件下冬小麦和大豆土壤水分动态预报模型研究[J].应用气象学报,2003,14(4):479-486. |
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| 作者姓名： | 毛飞 张佳华 卢志光 金之庆 |
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| 作者单位： | 1.中国气象科学研究院, 北京 100081 |
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| 基金项目： | 国家"十五"科技攻关计划"农林重大病虫害和农业气象灾害的预警及控制技术研究"之"农业气象灾害预警技术研究"(2001BA509B13)资助. |
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| 摘 要： | 用统计方法和水量平衡法推导出江淮地区潜水蒸发经验计算模型。利用农田水分平衡原理分别在江淮地区建立了引入潜水蒸发量和没有引入潜水蒸发量的冬小麦和大豆土壤水分动态预报模型，并对这两种模型在地下水浅埋条件下的预报准确度进行比较。1980年的比较结果是:当预报时效为10天时，两种作物7个时段的土壤水分平均绝对误差前者为8.2 mm，后者为20.1 mm，平均相对误差分别为2.8%和6.8%。引入潜水蒸发量后，冬小麦和大豆土壤水分动态预报模型的预报准确度明显提高。
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| 关 键 词： | 地下水浅埋条件 冬小麦 大豆 土壤水分预报模型 |
| 收稿时间： | 2003-04-06 |
| 修稿时间： | 2003年4月6日 |
Dynamic Forecasting Models of Soil Moisture in Winter Wheat and Soybean Fields in Shallow Groundwater Level |
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| Mao Fei,Zhang Jiahua.Dynamic Forecasting Models of Soil Moisture in Winter Wheat and Soybean Fields in Shallow Groundwater Level[J].Quarterly Journal of Applied Meteorology,2003,14(4):479-486. |
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| Authors: | Mao Fei Zhang Jiahua |
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| Institution: | 1.Chinese Academy of Meteorological Sciences, Beijing 1000812.Chinese Agricultural University, Beijing 1000943.Jiangsu Academy of Agricultural Sciences, Nanjing 210014 |
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| Abstract: | The calculating model of phreatic water evaporation in the Jianghuai region is g iven by means of statistic and water balance methods. According to the water bal ance principles of crop fields, the dynamic forecasting models of soil moisture in winter wheat and soybean fields with phreatic water evaporation and without p hreatic water evaporation are built. The forecasting accuracy of the two models in a condition of shallow groundwater level is compared. The results in 1980 sho w that the mean absolute errors and mean relative errors of the former for seven periods of two crops are 8.2 mm and 2.8% and the mean absolute errors and mean relative errors of the latter for seven periods of two crops are 20.1 mm and 6.8 %. The forecasting accuracy of the dynamic forecasting models of soil moisture i n winter wheat and soybean fields including phreatic water evaporation is improv ed notably. |
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| Keywords: | Shallow groundwater level Winter whea t Soybean Forecasting models of soil moisture |
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