| 1961-2020年中国玉米需水量及水分盈亏的时空变化格局 |
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| 引用本文： | 商蒙非,赵炯超,韩桐,李硕,王凯澄,高真真,秦雨酥,褚庆全.1961-2020年中国玉米需水量及水分盈亏的时空变化格局[J].中国农业大学学报,2022,27(4):22-30. |
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| 作者姓名： | 商蒙非 赵炯超 韩桐 李硕 王凯澄 高真真 秦雨酥 褚庆全 |
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| 作者单位： | 中国农业大学 农学院, 北京 100193 |
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| 基金项目： | 粮食丰产增效科技创新专项(2016YFD0300201) |
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| 摘 要： | 为明确不同区域玉米需水量的时空变化,根据联合国粮食与农业组织(FAO)推荐的彭曼公式和作物系数法,利用1961-2020年558个典型气象站点的标准气象数据对我国不同区域玉米的生育期作物需水量进行计算,并结合玉米生育期内的降水量进一步分析不同区域玉米的水分盈亏时空变化.结果表明,全国玉米生育期内需水量在区域间呈现明显的...
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| 关 键 词： | 玉米 需水量 有效降水量 水分盈亏 时空变化 |
| 收稿时间： | 2021/3/28 0:00:00 |
Temporal and spatial variation of maize water requirement and water surplus and deficit in China from 1961 to 2020 |
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| SHANG Mengfei,ZHAO Jiongchao,HAN Tong,LI Shuo,WANG Kaicheng,GAO Zhenzhen,QIN Yusu,CHU Qingquan.Temporal and spatial variation of maize water requirement and water surplus and deficit in China from 1961 to 2020[J].Journal of China Agricultural University,2022,27(4):22-30. |
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| Authors: | SHANG Mengfei ZHAO Jiongchao HAN Tong LI Shuo WANG Kaicheng GAO Zhenzhen QIN Yusu CHU Qingquan |
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| Institution: | College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China |
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| Abstract: | The aim of this study was to clarify the temporal and spatial changes of corn water demand in different regions. Base on the daily data of 558 meteorological stations from 1961 to 2020 in China, the Penman-Monteith formula recommended by FAO and the relevant crop coefficients were used to calculate maize water requirement and further analyses spatial-temporal variation of maize water surplus and deficit combining with precipitation during crop growing season. The results showed that: Maize water requirement exhibited obvious spatial variation and the average of 1961-2020 was 285-987 mm/year in China. The water requirement of spring maize was higher than that of summer maize, which were 468 and 326 mm/year, respectively. The high value regions of spring maize water requirement were located in the Northwest, North China and Northeast farming regions, and their water requirements were 699, 566 and 496 mm/year, respectively. Maize water surplus and deficit also exhibited obvious spatial variation and the average of different regions was between 3 and 638 mm/year in China. The spring maize water deficit of Northwest farming region was the highest than other regions, with an average of 638 mm/year from 1961 to 2020, followed by North China farming region 324 mm/year and Northeast farming region 145 mm/year, respectively. Based on crop water requirement and water deficit in the past 60 years, the trends were various among regions: The water deficit of spring maize showed a decreased trend in Yangtze Plain farming region, South China farming region and Northwest farming region; North China farming region, Sichuan Basin farming region and Southwest farming region showed an increased trend. The water deficit of summer maize exhibited a decreased trend. In addition, the water requirement of maize showed an obvious inter-annual variation. |
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| Keywords: | maize crop water requirement effective precipitation water surplus and deficit temporal and spatial variation |
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