| 不同灌水定额条件下土壤含水率变化试验研究 |
| |
| 引用本文： | 李仕华,贺军奇,赵宝峰.不同灌水定额条件下土壤含水率变化试验研究[J].安徽农业科学,2010,38(7):3607-3610. |
| |
| 作者姓名： | 李仕华 贺军奇 赵宝峰 |
| |
| 作者单位： | 1. 长安大学环境科学与工程学院,陕西西安,710054
2. 长安大学水与发展研究院,陕西西安,710054 |
| |
| 基金项目： | 国家外国专家局、教育部高等学校学科创新引智计划项目(B08039) |
| |
| 摘 要： | 目的]研究不同灌水定额条件下土壤含水率变化。方法]利用时域反射仪,对不同灌水定额入渗的土壤含水率进行测定;结合土壤质地特性,分析不同灌水定额下的土壤含水率随深度变化的曲线特征。结果]不同土层深度土壤水分变化因灌溉水量不同而不同。不灌水时,0-70 cm土层土壤含水率为9.88%;70-100 cm土层土壤含水率逐渐增大,达17.00%;100-120 cm土层含水率达25.00%;120-180 cm土层土壤含水率为24.45%。灌水量为0.029 99 m^3/m^2时,0-30 cm土层土壤含水率逐渐增大,达30.00%;30-60 cm土层土壤含水率逐渐下降,降至25.00%,60-180 cm土层土壤含水率为25.00%;灌水量为0.059 97 m^3/m^2时,0-30 cm土层土壤含水率逐渐增大,达26.00%,30-100 cm土层土壤含水率为32.50%,120-180 cm土层土壤含水率恢复到未灌溉前状态;灌水量为0.089 96 m^3/m^2时,0-180 cm土层土壤含水率为25.86%。结论]该研究结果对经济合理地利用水资源具有重要意义。
|
| 关 键 词： | 关中平原 灌水定额 土层深度 土壤含水率 |
Experimental Study on Variation of Soil Moisture under Different Irrigation Quota |
| |
| LI Shi-hua et al.Experimental Study on Variation of Soil Moisture under Different Irrigation Quota[J].Journal of Anhui Agricultural Sciences,2010,38(7):3607-3610. |
| |
| Authors: | LI Shi-hua |
| |
| Institution: | School of Environmental Science & Engineering;Chang'an University;Xi'an;Shaanxi 710054 |
| |
| Abstract: | Objective] The aim was to study variation of soil water content under different irrigation quota.Method] By using Trime-TDR apparatus,soil water content with different irrigation quota infiltration was measured;combining the characteristics of soil texture,curve characteristics of soil water content variation with soil depth under different irrigation quota were analyzed.Result] The results showed that different irrigation quota has resulted in variation of soil moisture in different layer depth.Soil moi... |
| |
| Keywords: | Guanzhong Plain Irrigation quota Soil depth Soil water content |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
