| 京郊地区主要农作物需水特征与农田水量平衡分析 |
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| 引用本文： | 宋振伟,张海林,黄晶,陈阜.京郊地区主要农作物需水特征与农田水量平衡分析[J].农业现代化研究,2009,30(4):461-465. |
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| 作者姓名： | 宋振伟 张海林 黄晶 陈阜 |
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| 作者单位： | 中国农业大学农学与生物技术学院/农业部农作学重点实验室,北京,100193 |
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| 基金项目： | 农业部引进国际先进农业科学技术计划(948计划)，北京市都市农业学科群建设项目 |
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| 摘 要： | 本文利用FA056灌溉分册推荐的作物系数法计算了京郊地区20个站点近46年10种主要农作物的需水量.并计算了需水量与亏水量的变化趋势,并以2006年北京种植结构为基础,对自然状态下的农田水量平衡状况进行了分析.结果表明:10种主要农作物的多年平均需水量在308.6-729.2mm之间;除冬小麦外,其他作物的需水量变化均呈显著上升趋势,每10年增加量在0.49-1.17mm之间,而亏水量变化则表现为夏玉米、春玉米、大豆、水稻和花生等作物显著上升,每lO年上升1.10-1.45mm;10种主要农作物在自然状态下的多年平均总需水量为1293.8×106m3,蔬菜、春玉米、冬小麦和夏玉米的需水量分别为379.1×106m3(单位面积折合530.6mm)、291.7×106m3(400.8mm)、285.1×106m3(452.2mm)和194.6×106m3(308.6mm),占总需水量的88.9%;不同水文年型下,降水均不能满足作物生长需要,农田水分以亏缺为主.
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| 关 键 词： | 需水量 亏水量 t-检验 变化趋势 农田水量平衡 |
Characters of Water Requirement for Main Crops and Field Water Balance in Beijing Region |
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| SONG Zhen-wei,ZHANG Hai-lin,Huang Jin and ChenFu.Characters of Water Requirement for Main Crops and Field Water Balance in Beijing Region[J].Research of Agricultural Modernization,2009,30(4):461-465. |
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| Authors: | SONG Zhen-wei ZHANG Hai-lin Huang Jin and ChenFu |
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| Institution: | College of Agronomy and Biotechnology;China Agricultural University/Key Laboratory of Farming System;Ministry of Agriculture;Beijing 100193;China |
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| Abstract: | The water requirements for 10 main crops in recent 46-year according to 20 meteorological stations in Beijing region were calculated by FAO-56 approach. The variable trends in crop requirement and deficit for 10 crops were analyzed. Based on the cropping pattern in 2006,the regional field water balance was evaluated too. Results show that:the long-term average water requirement for 10 crops range from 308.6 to 729.2 mm; the water requirement for most crops except winter wheat show significant increase trend... |
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| Keywords: | crop water requirement crop water deficit t-testing variable trend field water balance |
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