CAJ | 학술논문

[目的]揭示土壤全量养分空间分布的异质性,为农田的科学管理及提高作物产量提供理论依据.[方法]通过GIS技术,分析了辽宁省不同土壤深度全碳、全氮、全磷和全钾的空间分布状况.[结果]不同土壤深度全碳、全氮和全磷呈现出东高西低的分布趋势,但全钾在辽西分布较高.土壤表层(0～20 cm)全碳、全氮、全磷和全钾含量均高于下层(20～40 cm).全钾随土壤深度变化量较小,其表层和下层平均含量分别为17.64和17.08 g/kg.[结论] 不同土壤深度全量养分的分布特征为农田管理提供了理论依据.
[목적]게시토양전량양분공간분포적이질성,위농전적과학관리급제고작물산량제공이론의거.[방법]통과GIS기술,분석료요녕성불동토양심도전탄、전담、전린화전갑적공간분포상황.[결과]불동토양심도전탄、전담화전린정현출동고서저적분포추세,단전갑재료서분포교고.토양표층(0～20 cm)전탄、전담、전린화전갑함량균고우하층(20～40 cm).전갑수토양심도변화량교소,기표층화하층평균함량분별위17.64화17.08 g/kg.[결론] 불동토양심도전량양분적분포특정위농전관리제공료이론의거.
[Objective]The aim was to reveal the spatial distribution characteristics of total nutrients in soil and provoide a theoretical basis for farmland management and improvement of crop yield. [Method] GIS technique was used to analyze the spatial distribution characteristics of total C, total N, total P and total K in different soil layers in Liaoning Province. [Result] The results showed that the contents of total C, total N, total P decrease from east to west, but the content of total K was higher in west of Liaoning Province. The contents of total C, total N, total P and total K were higher in soil surface(0-20 cm) than the lower(20-40 cm). Total K varied less with soil depth, and its mean contents in soil surface and soil lower layer were 17.64 and 17.08 g/kg respectively. [Conclusion] The distribution characteristics of total nutrients in different soil layers will provide a theoretical basis for farmland management.