水土保持通报2017，Vol.37Issue(3)：204-209,6.DOI:10.13961/j.cnki.stbctb.2017.03.034
西安市蔬菜种植区土壤属性的空间变异与肥力适宜性
Spatial Variation and Fertility Suitability of Vegetable Field in Xi'an City
摘要
Abstract
[Objective] To evaluate the spatial variation and fertility suitability of vegetable field in Xi'an City,Shaanxi Province,in order to provide a basis for making decision of soil cultivation and agricultural production in relevant departments.[Methods] Six indexes that are closely related to vegetable growth including soil p H value,electrical conductivity,organic matter,alkali-hydrolysable nitrogen,available phosphorus and available potassium,were measured.Their spatial variability was analyzed using semi-variation function.And the soil fertility suitability was determined using fuzzy mathematics method.The soil fertility suitability was graded by equal spacing method after Kriging interpolation was conducted,and finally it was evaluated comprehensively.[Results] The semi-variogram could fit the spatial variability of soil in the vegetable field.The spatial distributions of the conductivity and alkali-hydrolysable nitrogen were mainly affected by the fertilization,and the soil pH value and other nutrient were affected by both anthropogenic and natural factors.[Conclusion] The soil fertility suitability of vegetable field in Xi'an City was at middle level,and the main limiting factors of vegetable growth were soil organic matter and alkali-hydrolysable nitrogen content.There are some areas where the soil fertility of vegetable field should be improved.These areas are the southeastern of the Lintong District,the northern of the Huyi District and the Zhouzhi County,the northern part next to Chang'an District and the Huyi District.To the vegetable farmer,measures that can improve the contents of soil organic matter and nitrogen should be taken.关键词
土壤肥力适宜性/空间变异/模糊数学/蔬菜区Key words
soil fertility suitability/spatial variability/fuzzy mathematics/vegetable field分类
农业科技引用本文复制引用
王晶,杨联安,杨煜岑,冯武焕,于世锋,宋英强,张彬,李新尧..西安市蔬菜种植区土壤属性的空间变异与肥力适宜性[J].水土保持通报,2017,37(3):204-209,6.基金项目
教育部人文社会科学研究规划基金项目“基于地统计学和GIS的土壤网格采样技术研究”(10YJA910010) （10YJA910010）
陕西省农业科技攻关项目(2011K02-11) （2011K02-11）
西安市科技计划项目(NC1402,NC150201) （NC1402,NC150201）
西北大学“211工程”研究生自主创新项目(YZZ15013) （YZZ15013）
