膜下滴灌条件下土壤水分空间分布特征研究  

Research on Temporal and Spatial Distribution Characteristic of Soil Water under Drip Irrigation Condition

作　　者：李彦[1] 雷晓云[1] 申详民[1] 庄维民[2] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830000 [2]新疆生产建设兵团农八师148团灌溉试验站,新疆石河子832000

出　　处：《水资源与水工程学报》2010年第6期4-7,共4页Journal of Water Resources and Water Engineering

基　　金："十一五"国家科技支撑计划项目:"干旱区智能化微灌关键技术研究与示范"(2007BAD38B05);新疆维吾尔自治区水利水电工程重点学科资助项目(XJZDXK-2002-10-05);新疆农业大学校前期资助课题(XJAU200918)资助

摘　　要：采用网格化和随机性取样方式对新疆农八师石河子148团的膜下滴灌机采棉模式下的土壤水分进行了取样分析,分别测定了不同取样时间和面积上的0~20 cm,20~40 cm,40~60 cm三个层次的土壤水分。并运用传统统计学方法和地统计学方法对土壤水分的数据统计特征、半方差函数及其时空分布规律进行了分析。结果表明：土壤水分具有明显的空间变异性,变异系数呈中等变异程度,0~20 cm的变异系数和标准差均大于其它两个层次。所得结论可用于提高水分利用效率和精确农业的研究和实践。Based on gridding sampling and random sampling methods,soil samples were obtained from each point under three layers of 0~20cm,20~40cm,40~60cm in different area and time in Xinjiang State Farming,Div 8,148 tuan.The soil water statistic characteristic,semi-variance and the rule of temporal and spatial distribution were also studied.The result showed that the soil water had obviously spatial variability,and the variation coefficiency was in the middle intensity.The variation coefficiency and std.deviation in the first layer were higher than in the others.These results can be used to increase the water use efficiency and precision agriculture in research and practice.

关 键 词：滴灌 棉花 土壤水分 空间变异性 地质统计学 

分 类 号：S275.6[农业科学—农业水土工程]