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| 土壤结构改良剂影响下的土壤水分有效性研究 | |
| 引用本文： | 潘英华,雷廷武,张晴雯,冯雪.土壤结构改良剂影响下的土壤水分有效性研究[J].灌溉排水学报,2007,26(5):63-67. |
| 作者姓名： | 潘英华 雷廷武 张晴雯 冯雪 |
| 作者单位： | 1. 鲁东大学,地理与资源管理学院,山东,烟台,264025;中国科学院,水利部,水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100 2. 中国科学院,水利部,水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100;中国农业大学,水利与土木工程学院,北京,100083 3. 中国农业科学院,农业环境与可持续发展研究所,北京,100081 4. 鲁东大学,地理与资源管理学院,山东,烟台,264025 |
| 基金项目： | 国家自然科学基金资助项目(50179035)，国家高技术研究发展计划(863计划)(2002AA6Z3021) |
| 摘 要： | 以聚丙烯酰胺(PAM)与磷石膏(PG)为土壤结构改良剂,利用离心机法,测定土壤水分特征曲线,从分析土壤的吸水能力和持水能力的角度出发,研究土壤结构改良剂对土壤水分有效性的影响。研究结果表明,土壤的吸水能力、持水能力与释水能力均表现出与用量密切相关;在使用土壤结构改良剂的情况下,仍然可用van Genuchten方程很准确的模拟土壤吸力与含水率之间的关系,即可作为使用土壤结构改良剂后的土壤水分特征曲线的模拟表达式;在试验的用量范围内,土壤结构改良剂的使用不会影响植物对水分的吸收和利用。 |
| 关 键 词： | 土壤结构改良剂 土壤水分有效性 吸水能力 持水能力 土壤水分特征曲线 |
| 文章编号： | 1672-3317（2007）05-0063-05 |
| 修稿时间： | 2006-11-02 |
Investigation of Soil Water Availability Influenced by Soil Conditioner |
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| PAN Ying-hua,LEI Ting-wu,ZHANG Qing-wen,FENG Xue.Investigation of Soil Water Availability Influenced by Soil Conditioner[J].Journal of Irrigation and Drainage,2007,26(5):63-67. | |
| Authors: | PAN Ying-hua LEI Ting-wu ZHANG Qing-wen FENG Xue |
| Institution: | 1. College of Geography and Resource Management, Ludong University, Yantai 264025, China; 2. State Key Laboratory of Soil Erosion and Dryland Farming in Loess Plateau, Institute of Soil and Water Conservation, Yangling 712100, China; 3. Conservancy and Civil engineering, Chinese Agricultural University, Beijing 100083, China~ 4. Institute of Agroenvironment and Sustainable Development, CAAS, Beijing 100081, China |
| Abstract: | The mixture of PAM and PG were taken as soil conditioner here.Centrifuge method was used to measure soil water characteristic curve,through analyzing water absorbing ability and water retention ability of soil to investigate the influence of soil conditioner on soil water availability.The results show that soil water absorbing ability,water retention ability and water discharging capacity were all related with the dosage of PAM and PG intimately.The relationship between soil suction and soil moisture,that is soil water characteristic curve,was still be simulated by van-Genuchten equation accurately.In the range of PAM dosage,water absorption and utilization of plant will not be influenced by soil conditioner. |
| Keywords: | soil conditioner soil water availability water absorbing ability water retention ability soil water characteristic curve |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |