| 宁夏平原天然状态下作物水分亏缺研究 |
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| 引用本文： | 张晶.宁夏平原天然状态下作物水分亏缺研究[J].生态经济(学术版),2007(7):111-113. |
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| 作者姓名： | 张晶 |
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| 作者单位： | 中国科学院地理科学与资源研究所 北京100101 |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | 本文以宁夏平原为案例,对天然状态下的农田水分平衡状况进行了深入的定量研究,采用长系列(1961～2001年)、短时段(月)和多种作物类型(8种)相匹配的操作方法,建立农田水量平衡模型,计算得到了宁夏平原各个县域单元、各种作物、逐年、逐月的有效降水、盈水量、亏水量值。结果表明:自然降水不能满足作物生长发育的需求,水分亏缺是宁夏平原天然状态下农田水分平衡的主要特征;不同作物水分亏缺程度差异较大;宁夏平原未来农业发展必须推行"以水定产"战略。
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| 关 键 词： | 农田水分平衡 宁夏平原 水分亏缺 可持续发展 |
The Water Deficient of Crop under Natural Regulation in Ningxia Plain |
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| ZHANG Jing.The Water Deficient of Crop under Natural Regulation in Ningxia Plain[J].Ecological Economy,2007(7):111-113. |
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| Authors: | ZHANG Jing |
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| Institution: | 1.Institute of Geographic Sciences and Natural Resources Research CAS, Beijing 100101, China; 2.Dezhou University, Dezhou Shandong 253023, China |
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| Abstract: | Ningxia Plain lies in droughty area and facing crisis of water lack, this paper study the field water balance under natural regulation named field water balance using field water resource balance equation, the research estimated monthly field water balance of 8 major crops for all of the12 counties in Ningxia Plain for a period of 1960-2001. Results show that precipitation can not meet water demand of the crops for growth and development in Ningxia Plain, and water deficient is the primary character of field water balance under natural regulation, and diversity of water deficient of different crop is distinct very much,. In order to realize sustainable development, the area should carry out the stratagem of "Deciding production by water" adjusting agriculture structure and production, at the same time the area should improve water use efficiency. |
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| Keywords: | field water balance Ningxia Plain water lack sustainable development |
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