摘要
基于保护地定位灌溉试验,采用经典统计学和地统计学的方法,以网格取样方式采集不同灌溉方法(沟灌、滴灌、渗灌)表层土壤,研究微尺度下土壤pH值的空间变异特征及空间分布。结果表明;经6年灌溉,沟灌处理pH显著降低,沟灌和滴灌0~5cm土层土壤pH表现为中等空间自相关,而其5~10cm和渗灌0~5cm和5~10cm的土壤pH表现为弱空间相关,水分的供给方式和数量影响土壤pH的空间变异。
Based on 6-years irrigation experiment in greenhouse, micro-scale spatial variability and the distribution of surface soil pH were analyzed by combining classical statistic method with geostatistic method with a small grid-sampling technique under three irrigation methods (furrow irrigation, drip irrigation and subsurface irrigation). The results indicated that, after 6-years irrigation, soil pH under furrow irrigation decreased significantly, soil pH (0 - 5 cm) under furrow irrigation and drip irrigation were medium heterogeneity, and soil pH (5 - 10 cm) of furrow irrigation and drip irrigation, soil pH (0 - 5, 5 - 10 cm) of subsurface irrigation which were weak heterogeneity. The supplying way and quantity of water by irrigation can affect the spatial variability of soil pH.
出处
《土壤》
CAS
CSCD
北大核心
2008年第5期828-832,共5页
Soils
基金
辽宁省教育厅重点项目(05L386)
辽宁省博士启动项目(20061043)
辽宁省教育厅创新团队项目(2007T156)资助
关键词
保护地
不同灌溉方法
土壤PH
空间变异
Greenhouse, Different irrigation method, Soil pH, Spatial variability