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| 红外遥感估算春小麦农田土壤含水率的试验研究 | |
| 引用本文： | 张振华,蔡焕杰,杨润亚.红外遥感估算春小麦农田土壤含水率的试验研究[J].农业工程学报,2006,22(3):84-87. |
| 作者姓名： | 张振华 蔡焕杰 杨润亚 |
| 作者单位： | 1. 西北农林科技大学教育部旱区农业水土工程重点实验室,杨凌,712100;烟台师范学院地理与资源管理学院,烟台,264025 2. 西北农林科技大学教育部旱区农业水土工程重点实验室,杨凌,712100 3. 烟台师范学院地理与资源管理学院,烟台,264025 |
| 基金项目： | 国家高技术研究发展计划(863计划);中国科学院资助项目 |
| 摘 要： | 根据水分亏缺条件下作物蒸发蒸腾量计算公式及作物水分胁迫指标CWSI(Crop Water Stress Index)的定义，提出了基于遥感作物冠层温度和土壤水分修正系数的春小麦田土壤含水率估算公式，其中土壤水分修正系数采用了幂函数形式。用该公式对春小麦田土壤含水率在分蘖后-拔节抽穗期、抽穗开花-灌浆期和乳熟-黄熟期3个生育阶段进行了估算，并对估算值和实测值进行对比和误差分析，结果表明该模型估算春小麦根层土壤含水率误差保持在18%以内。 |
| 关 键 词： | 作物水分胁迫指标 作物冠层温度 春小麦田 土壤含水率 |
| 文章编号： | 1002-6819(2006)03-0084-04 |
| 收稿时间： | 9/8/2004 12:00:00 AM |
| 修稿时间： | 2005-11-05 |
Experiment on estimating soil moisture content of spring wheat field with infrared remote sensing |
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| Zhang Zhenhu,Cai Huanjie and Yang Runya.Experiment on estimating soil moisture content of spring wheat field with infrared remote sensing[J].Transactions of the Chinese Society of Agricultural Engineering,2006,22(3):84-87. | |
| Authors: | Zhang Zhenhu Cai Huanjie and Yang Runya |
| Institution: | 1. The Key Laboratory of Agricultural Soil and Water Engineering, Northwestern Science and Technical University of Agriculture and Forestry, Yangling 712100, China ;2. The Geography and Resource Management College, Yantai Normal University, Yantai 264025, China |
| Abstract: | The present experiment was carried out to investigate the relationship between the crop water stress index(CWSI) and soil moisture content for irrigated spring wheat at Xiao Ba Kou irrigation station of Gansu province during 2001 March to July. The soil moisture estimation formula based on CWSI and soil water adjust coefficient which adopt power function model was gained according to crop ETa under water dificit condition and CWSI definition. The experiment results show that the model is liable to overestimate soil moisture during whole growth stage, and the estimating value is approach to real soil moisture and the error ratio is less than 18%. |
| Keywords: | crop water stress index crop canopy temperature spring wheat field soil moisture content |
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