寿光市土壤养分特性及空间变异性分析  

Study on Statistical Features and Spatial Variability of Soil Nutrients in Shouguang

作　　者：徐海燕[1,2] 聂宜民[2] 赵文武[1] 陈永智[3] 

机构地区：[1]北京师范大学资源学院,北京100875 [2]山东农业大学资源与环境学院,山东泰安271018 [3]山东省寿光市农业局,山东寿光262700

出　　处：《农业现代化研究》2009年第1期118-121,共4页Research of Agricultural Modernization

基　　金：国家“十一·五”科技支撑计划《食品安全关健技术的应用的综合示范》项目“蔬菜安全生产的质量控制技术研究”(编号:2006BAK02A03)

摘　　要：本研究以寿光市为例,在分析其露天耕地土壤养分特征值的基础上,采用GIS和地统计分析相结合的方法研究了土壤养分的空间变异性。研究结果表明:①土壤特性除pH值为弱变异性外,其他均为中等变异;②土壤有机质、Ca、Mg含量较高,N、P、K有一定程度的缺乏;有效态微量元素的含量不均衡,Zn普遍缺乏,Fe含量不高;③NH4+-N、T-N、Cu、Ca、Mg的变异性结构较差,其他土壤养分变异结构明显。Zn在整个区域内表现为恒定的变异。P、K、pH、Mn、B空间变异主要是由土壤母质、地形、气候等非人为的区域因素引起。OM、Fe在研究区域上具有中等空间相关性,其由施肥、作物、管理水平等随机因素引起的空间变异性较小。Using the methods of G1S and geostatistics, this paper studied the spatial variability of soil nutrients in Shouguang city, which was based on the analysis of the statistical features of soil properties. The results showed that： （1） all parameters exhibited intermediate variability except for soil pH showed a lower variability.（2） Soil organic matter, Ca, Mg content were high in the research region. NH4^＋-N, P, K were deficient in a certain extent. Available trace elements in the grain crop area were imbalance to some extent. It was widely deficient in Zn and Fe. （3）In the actual sample interval, Poor variability structure was found in NH4^＋-N, T-N, Cu, Ca, Mg. And the other soil properties had strong or intermediate spatial correlation. In the whole research scope, Zn had lasting variability. The spatial variability of P, K, pH, Mn, B were mainly caused by the spatial autocorrelation. OM, Fe had intermediate spatial correlation, and the spatial variability of them was aroused by the random and artifical factors had a less proportion.

关 键 词：土壤养分 空间变异性 地统计学 

分 类 号：S158.3[农业科学—土壤学]