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| 灌溉决策中的土壤特性空间变异研究 | |
| 引用本文： | 李毅,门旗,罗英.灌溉决策中的土壤特性空间变异研究[J].灌溉排水学报,2000,19(1):22-25. |
| 作者姓名： | 李毅 门旗 罗英 |
| 作者单位： | 1. 西安理工大学水资源所,西安,710048 2. 新疆农科院土肥所,830000 3. 兵团勘刚设计院二分院,830000 |
| 摘 要： | 通过对灌区田间原状土样进行室内测试 ,并对测得的土壤水分特性值进行经典统计分析 ,得出土壤水分参数的统计特征值 ,这些参数近似为正态分布和对数正态分布 ,并对土壤水分参数进行地质统计学分析 ,绘出各参数值的半方差图和等值线图。根据研究分析结果 ,确定采用田间土壤饱和含水量和田间持水量作为评价分析参数。在灌溉决策系统中 ,根据半方差图确定观测点间距 ,从评价参数等值线图确定观测点在田间的位置。该研究方法对灌溉决策使用中子水分仪 (或 TDR)确定田间观测点的间距和位置有理论上的指导意义 |
| 关 键 词： | 灌溉决策 土壤空间变异 经典统计分析 地质统计学 |
| 文章编号： | 1000-646X(2000)01-0022-04 |
| 修稿时间： | 1999-06-02 |
Study on Spatial Variability of Soil Properties for Irrigation Scheduling |
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| Li Yi,MEN Qi,Luo Ying.Study on Spatial Variability of Soil Properties for Irrigation Scheduling[J].Journal of Irrigation and Drainage,2000,19(1):22-25. | |
| Authors: | Li Yi MEN Qi Luo Ying |
| Institution: | Li Yi (Shihezi University, Shihezi Xinjiang, 832003)MEN Qi (Xi'an University of Science and Technology, Xi'an 710048)Luo Ying (Designing Institute of Xinjiang Corps, Urumoqi, 830013) |
| Abstract: | Soil water property data obtained from field experiments were analyzed with classical statistics method. Results showed that some typical soil properties fell in either normal distribution or logical normal distribution. The data were also analyzed with geo statistics methods. The semi variation graph and contour maps of soil water properties were drawn out. These results are helpful for locating and spacing the investigating points for measuring soil moisture with neutron Probe or TDR. |
| Keywords: | irrigation scheduling soil spatial variability classical statistics analysis geo statistics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |