| 作物水分胁迫指数与土壤含水量关系探讨 |
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| 引用本文： | 赵 晨,罗 毅,袁国富,于 强. 作物水分胁迫指数与土壤含水量关系探讨[J]. 中国生态农业学报, 2001, 9(1): 34-36 |
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| 作者姓名： | 赵 晨 罗 毅 袁国富 于 强 |
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| 作者单位： | 1. 信阳师范学院生物系,
2. 中国科学院地理科学与资源研究所, |
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| 基金项目： | "九五”中国科学院重大项目(KZ951-A1-301)与特别支持项目(KZ95T-04-01)、国家自然科学基金重大项目(49890330)和中国科学院禹城综合试验站开放基金共同资助 |
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| 摘 要： | 基于冠层温度的作物水分胁迫指标CWSI（CropWater StressIndex)广泛用于指导作物灌水时间,利用自动气象站的观测资料分别计算了不同供水处理条件下冬小麦中午12：00的作物水分胁迫指数。并将作物水分胁迫指数和对应的土壤含水量进行相关分析。以探讨用作物水分胁迫指数确定灌水量的可行性。结果表明,二者呈一定相关性,但相关关系不密切,复相关系数为0.54,作物水分胁迫指数随土壤含水量的降低呈明显的增大趋势。作物水分胁迫指数随气象因子的波动表现出明显的波动性,且在作物遭受较严重水分胁迫下波动性更强,这预示着利用作物水分胁迫指数直接定量标识作物土壤水分状况的可靠性不强。
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| 关 键 词： | 作物水分胁迫指数 灌溉 冬小麦 冠层温度 土壤含水量 灌水量 灌水时间 |
| 收稿时间： | 2000-08-03 |
| 修稿时间： | 2000-08-03 |
Primary investigation on the relationship between the crop water stress index and the soil moisture |
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| ZHAO Cheng,LUO Yi,YUAN Guo-Fu and YU Qiang. Primary investigation on the relationship between the crop water stress index and the soil moisture[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 34-36 |
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| Authors: | ZHAO Cheng LUO Yi YUAN Guo-Fu YU Qiang |
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| Affiliation: | Teachers College of Xinyang, Henan Province, Xinyang 464000;Institute of Geographical Sciences and Natural Resources,Chinese Academy of Sciences, Beijing 100101;Institute of Geographical Sciences and Natural Resources,Chinese Academy of Sciences, Beijing 100101;Institute of Geographical Sciences and Natural Resources,Chinese Academy of Sciences, Beijing 100101 |
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| Abstract: | Crop water stress index(CWSI) is widely used in determinating irrigation time but seldom in determinating irrigation water amount. The objective of this paper is to investigate the relationship between the CWSI and the soil moisture and the possibility of using it to determinate the irrigation water amount. Analysis of the CWSI of the different irrigation treatment plots indicated that CWSI increased with the decrease of soil water content and showed variations caused by fluctuation of the weather factors. The correlation coefficient of CWSI to soil moisture content was only 0.54. This indicates that CWSI may not be used reliably for determinnating the irrigation amount. |
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| Keywords: | Crop water stress index Irrigation Wheat Canopy temperature |
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