摘要
及时掌握土壤养分时空变异,对盐碱地区改土增产具有重要现实意义。本文在野外采样、室内化验分析获取养分数据基础上,应用GIS技术和统计学方法分析了"渤海粮仓"典型区——无棣核心典型区的土壤养分时空变异情况。其中,土壤有机质、有效氮、有效磷含量比较均匀,土壤有效钾含量变化巨大。并且初步掌握了企业经营管理条件下的盐碱地小麦冬苗期和开花期土壤养分特征及其时空变异,可为企业采取针对性措施进一步改良土壤和改进施肥方式增产增效提供参考。
Timely grasping spatial and temporal variation of soil nutrients is important for increasing the output of land in saline-alkali land Based on field sampling and indoor test analysis to obtain nutrients data,this paper applies GIS and statistics methods to analyze‘Bohai Sea Granary’typical area——Soil nutrient spatial and temporal variation of Wudi core typical area.The contents of soil organic matter,available nitrogen and available phosphorus were relatively in average level,and the contents of available potassium in soil changed greatly.Preliminary grasping the characteristics of soil nutrients and space-time variation to winter wheat seedling stage and flowering period in saline-alkali land under the condition of enterprise management can provide the reference for taking effective measures to further improve soil and improve the way of fertilizing in order to increase production and quality.
作者
姚宇
朱昌达
YAO Yu;ZHU Chang-da(College of Resources and Environment,Shandong Agricultural University,Tai'an Shandong 271000,China)
出处
《中国人口·资源与环境》
CSSCI
CSCD
北大核心
2018年第S1期160-163,共4页
China Population,Resources and Environment
关键词
土壤养分
时空变异
SPSS
反距离权重插值
soil nutrient
temporal and spatial variation
SPSS
IDW interpolation method
作者简介
姚宇,硕士生,主要研究方向为土地规划与利用。E-mail:yao18yu@163.com。
