摘要
本文以西安市集中蔬菜种植区为例,采用地统计学方法,对369份土壤样品有机质含量进行空间变异分析、空间丰缺水平评价,并利用方差分析和相关性分析深入研究土壤性质对有机质含量的影响。结果表明,蔬菜区土壤有机质的最适变异函数是指数模型,其块金效应为50.0%,在2661 m范围内具有中等空间相关性,有机质空间变异性在东南-西北方向上最明显;蔬菜区土壤有机质含量处于中等偏低的水平,临潼区和高陵区交界处、周至县和鄠邑区交界处周围土壤有机质含量低于15 g/kg,有机质含量随土壤颗粒的变细呈增大的趋势,同时,褐土有机质含量最高,新积土有机质含量最低。土壤有机质与种植年限、pH值呈显著负相关关系。研究结果可为蔬菜种植相关部门提供决策依据。
Taking the concentrated vegetable growing areas in Xi'an as an example,this paper took geostatistics to analyzethe spatial variability and spatial abundance level in369soil samples and study the effect of soil properties on organic mattercontent with variance analysis and correlation analysis.The results showed that the optimal variation function of soil organicmatter was exponential model with50.0%nugget effect in vegetable fields,there was medium spatial correlation within thescope of2661m,and spatial variability of soil organic matter was most obvious in southeast-northwest.The soil organicmatter content was at a lower-middle-level in vegetable fields,the content of soil organic matter was below15g/kg at thejunction of Lintong and Gaoling,Zhouzhi and Huyi,where should take measures to increase the soil organic matter content.The content of soil organic matter increased with the decrease of soil particles.At the same time,the content of soil organicmatter in cinnamon soils was the highest,and the lowest in the new soil.Soil organic matter content had significant negativecorrelation with the planting age and pH value.The results can provide decision-making basis for the relevant vegetablecultivation departments.
作者
王晶
杨联安
杨煜岑
冯武焕
于世锋
吕爽
张彬
WANG Jing;YANG Lian-an;YANG Yu-cen;FENG Wu-huan;YU Shi-feng;LV Shuang;ZHANG Bin(College of Urban and Environmental Sciences/Northwest University,Xi’an 710127,China;Xi’an Agricultural Technology Extension Center,Xi’an 710066,China;Xi'an Agricultural Product Quality Safety Inspection and Monitoring Center,Xi'an 710077,China;School of Geography & Resource Science/Neijiang Normal University,Neijiang 641100,China)
出处
《山东农业大学学报（自然科学版）》
CSCD
2017年第4期562-569,共8页
Journal of Shandong Agricultural University：Natural Science Edition
基金
教育部人文社会科学研究规划项目:基于地统计学和GIS的土壤网格采样技术研究(10YJA910010)
陕西省农业科技攻关项目:果树促生微生物菌肥及精准化施肥技术研究(2011K02-11)
西安市科技计划农业技术研发项目:蔬菜产区环境评估和土壤调控修复技术(NC1402)
西安市科技计划农业技术研发项目:基于Android平台的嵌入式猕猴桃施肥管理系统开发(NC150201)
西北大学"211工程"研究生自主创新项目(YZZ15013)
关键词
土壤有机质
空间变异
地统计学
蔬菜
Soil organic matter
spatial variation
Geo-statistics
vegetable
作者简介
王晶(1992-),女,硕士研究生,主要研究农业资源利用.E-mail:751697930@qq.com;通讯作者:Author for correspondence. E-mail:yanglianan@163.com
