| 辽宁地区玉米作物系数的确定 |
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| 引用本文： | 纪瑞鹏,班显秀,张淑杰.辽宁地区玉米作物系数的确定[J].中国农学通报,2004,20(3):246-246. |
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| 作者姓名： | 纪瑞鹏 班显秀 张淑杰 |
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| 作者单位： | 中国气象局沈阳大气环境研究所,辽宁,沈阳,110016 |
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| 基金项目： | 辽宁省科技厅基金项目(20022043) |
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| 摘 要： | 玉米作物系数是计算玉米耗水量的重要参数之一。为了准确客观地估算玉米群体的蒸散量，本文利用1980～2002年20个代表站点的日常农业气象土壤湿度观测资料，确定了辽宁5个农业气候区的玉米作物系数，分析作物系数在生育期内的变化规律，并分区建立了玉米作物系数与时间（旬）关系6次多项式函数。结果表明，辽宁各农业气候区的玉米作物系数值存在明显差异，但其变化规律一致。
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| 关 键 词： | 玉米 蒸散 作物系数 辽宁 |
Ascertainment of Crop Coefficients of Maize in Liaoning Area |
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| Ji Rui-peng Ban Xian-xiu,Zhang Shu-jie.Ascertainment of Crop Coefficients of Maize in Liaoning Area[J].Chinese Agricultural Science Bulletin,2004,20(3):246-246. |
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| Authors: | Ji Rui-peng Ban Xian-xiu Zhang Shu-jie |
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| Institution: | (Institute of atmospheric environment,CMA,Shenyang 110016,China) |
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| Abstract: | Crop coefficient of maize is one of the most parameters needs for crop water requirements.For estimating the evapotranspiration of maize objectively,in this paper,crop coefficient of maize were calculated by using the daily observational data of soil moisture of 1980～2002. The crop coefficient of maize in Liaoning's 5 areas were ascertained and the change of Kc during maize groeing period was analyzed.The Kc as sixth order polynomial functions of time(10 days) were derived.The results showed that the crop coefficient value of maize in Liaoning every area are obvious difference, but the change of their laws are comparatively unanimous. |
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| Keywords: | Corn Evapotranspiration Crop coefficient Liaoning |
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