铁岭凡河稻田土壤有效态中、微量元素空间变异特征研究  

Study on Spatial Variability of Soil Available Medium-microelements of Paddy Field in Fanhe Township of Tieling County

作　　者：邱卫文[1] 王秋兵[2] 雷永振[1] 王祥珍[1] 孙芙英[1] 

机构地区：[1]辽宁省农业科学院环资研究所,辽宁沈阳110161 [2]沈阳农业大学土地与环境学院,辽宁沈阳110161

出　　处：《土壤通报》2004年第6期767-772,共6页Chinese Journal of Soil Science

基　　金：中加第四期农事合作项目资助

摘　　要：试验应用地理信息系统和地统计学方法对铁岭凡河稻田土壤有效中量、微量元素的空间变异特征进行了研究。发现土壤有效钙、有效镁、有效硫、有效铁、有效铜和有效锰受地形、母质、灌溉和土壤物理、化学过程的长期影响,具有显著的方向性空间变异和自相关特征,其最大相关距可达500m左右。这一研究成果对该地区稻田土壤养分管理具有重要意义。Combined with GIS geography statistic was applied to analyze the spatial variability of soil available medium-microelements of the paddy yield in Fanhe township of Tieling county. The results show that all of the nutrient elements being studied have good directional and spatial structures, including soil available Ca, Mg, S, Fe, Cu and Mn. Their spatial variability are influenced by some factors that are topography, parent material irrigation, soil physical and chemical course in long time, Meanwhile their spatial correlation distance up to about 500m. The results can make some merits in effectually managing soil nutrient of paddy field in this region.

关 键 词：稻田 土壤 微量元素 半方差函数 克里格插值 空间变异 

分 类 号：S153.61[农业科学—土壤学]