耕地肥力空间特征与提升策略研究  

Spatial Characteristics and Improvement Strategies of Cultivated Land Fertility

作　　者：崔同华 CUI Tonghua(Agricultural Technology Extension Station of Pinggu District,Beijing 101200,China)

机构地区：[1]北京市平谷区农业技术推广站,北京101200

出　　处：《安徽农学通报》2021年第10期89-95,167,共8页Anhui Agricultural Science Bulletin

基　　金：国家重点研发计划项目(2016YFD0300801)。

摘　　要：土壤是农作物生长的立地基础,对土壤的实际肥力进行全面客观的了解,可以促进肥料的合理施用、土壤养分的有效管理,最终实现农业资源的可持续发展。该研究以北京市平谷区为对象,经过实地调研,确定以土壤有机质、全氮、有效磷和速效钾作为土壤肥力指标,对土壤肥力进行了多角度分析。结果表明:(1)研究区土壤有机质和全氮在空间上呈北部高、南部较低的变化趋势,速效钾含量在全区均较高,有效磷在重点区含量较高;(2)土壤肥力在土壤剖面中呈现自上而下逐渐递减的规律;(3)全区只有少部分地区存在缺磷限制型耕地;(4)根据研究区大量土壤数据资料,建立耕地质量管理信息系统,可为农业科技人员数据管理和决策提供有力的工具。Soil is the site foundation of crop growth.A comprehensive and objective understanding of the actual fer⁃tility of soil can promote the rational application of fertilizer and the effective management of soil nutrients,and final⁃ly realize the sustainable development of agricultural resources.Taking Pinggu District of Beijing as the research ob⁃ject,this paper established soil organic matter,total nitrogen,available phosphorus and available potassium as soil fertility indexes through field investigation,and carried out multi-angle analysis on soil fertility.Result display:(1)Soil organic matter and total nitrogen in the study area were higher in the north and lower in the south.The content of available potassium was higher in the whole area,and the content of available phosphorus was higher in the key ar⁃eas;(2)Soil fertility gradually decreases from top to bottom in the soil profile;(3)Only a small part of the whole re⁃gion has phosphorus deficiency restricted cultivated land;(4)Based on a large amount of soil data in the study area,the cultivated land quality management information system is established to provide a powerful tool for data manage⁃ment and decision-making of agricultural scientists and technicians.

关 键 词：土壤肥力 空间变异 平谷区 

分 类 号：S158[农业科学—土壤学]