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| 树枝覆盖与保水剂对土壤水分的影响 | |
| 引用本文： | 杨直毅,汪有科,赵颖娜,黎朋红,段雪松.树枝覆盖与保水剂对土壤水分的影响[J].灌溉排水学报,2010,29(1). |
| 作者姓名： | 杨直毅 汪有科 赵颖娜 黎朋红 段雪松 |
| 作者单位： | 1. 中国科学院,水利部,水土保持研究所,陕西,杨凌,712100;中国科学院,研究生院,北京,100049 2. 中国科学院,水利部,水土保持研究所,陕西,杨凌,712100;中国科学院,研究生院,北京,100049;西北农林科技大学,陕西,杨凌,712100 3. 西北农林科技大学,陕西,杨凌,712100 |
| 基金项目： | 国家科技支撑项目(2007BAD88B05) |
| 摘 要： | 通过野外定位试验,研究了树枝覆盖和保水剂对土壤水分的影响。结果表明,树枝覆盖抑制土壤蒸发的效果明显,在土壤含水量大于16%时,可抑制2/3左右的土壤蒸发,树枝覆盖可提高表层土壤含水量达30%;滴灌条件下保水剂穴施可明显减少土壤水分的垂直入渗,提高湿润体的平均土壤含水量;滴灌条件下树枝覆盖结合保水剂穴施节水效果明显,使0~70 cm深度的土壤含水量增加了24%。 |
| 关 键 词： | 树枝覆盖 保水剂 土壤水分 土壤蒸发 |
Influence of Branch Cover and Water Retaining Agent on Soil Water |
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| YANG Zhi-yi,WANG You-ke,ZHAO Ying-na,LI Peng-hong,DUAN Xue-song.Influence of Branch Cover and Water Retaining Agent on Soil Water[J].Journal of Irrigation and Drainage,2010,29(1). | |
| Authors: | YANG Zhi-yi WANG You-ke ZHAO Ying-na LI Peng-hong DUAN Xue-song |
| Institution: | 1.Institute of Soil and Water Conservation;CAS & MWR;Yangling 712100;China;2.Graduate School of Chinese Academy of Sciences;Beijing 100049;3.Northwest Agricultural and Forestry University;China |
| Abstract: | The results of located experiments about influence of branch cover and water retaining agent on soil water showed that: the effect of evaporation restrainted by branch cover is obvious.The branch cover could inhibit about 2/3 soil evaporation when soil water content is more than 16%.And branch cover can improve topsoil water content by 30%;Water retaining agent used by spot application resulted in decreasing of water vertical infiltration and increasing of water content of wetting soil under drip irrigation... |
| Keywords: | branch cover water retaining agent soil water soil evaporation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |