农用地质量空间分布规律研究——以辽宁省凌源市为例  

Study on the Spatial Distribution Law of Agricultural Land Quality——A Case Lingyuan City of Liaoning Province

作　　者：王会 韩璐[2] 周德[2] 贾树海[2] 

机构地区：[1]凌源市土肥站,凌源122500 [2]沈阳农业大学土地与环境学院,沈阳110161

出　　处：《中国农学通报》2009年第4期246-251,共6页Chinese Agricultural Science Bulletin

基　　金：辽宁省凌源市横向课题"凌源市耕地地力评价"。

摘　　要：在辽宁省凌源市农用地的资料收集与数据处理的基础上,把凌源市分为三个指标区,即凌源市北部沿河平原耕地区、凌源市南部沿河平原耕地区和凌源市坡耕地区。采用叠置法来划分单元,根据农用地自然质量等指数公式计算农用地自然质量等,并对凌源市的农用地质量的空间分布规律进行了分析,其中选取了3个主要的农用地质量因素——坡度、质地和有机质反映凌源市农用地的自然质量情况。分析结果表明,凌源市农用地总面积为50485.82hm2,农用地自然质量等分为13等,其中主要集中在第1、2段上,占79.04%,农用地自然质量等较低,质量较差。凌源市农用地以旱地为主,旱地土壤质量较差,从而使农用地质量的总体维持在较低水平。因此,在旱地田间管理上必须重视使用有机肥,培肥地力,提高作物产量,促进农业生产的发展。On the basis of the agricultural data collection and data processing in Lingyuan city of Liaoningp rovince,Lingyuan is divided into three areas,namely the cultivated land along the river plain area in then orth,the cultivated land along the river plain area in the south and the sloping land areas.Overlay method isu sed to divide unit,the formula is used to obtain the natural quality index,which is used to divide thea gricultural land grades,finally,the spatial distribution law of agricultural land quality is analyzed,whichs elects three major factors-slope,texture and organic matter.These factors are used to reflect the naturalc onditions of agricultural land quality.The results show that the total area of agricultural land in Lingyuan cityi s 50485.82 hm 2,and the natural quality grade of agricultural land is divided into 13,which mainly concentratei n the first and second stage,accounting for 79.04 percent.It indicates that the natural quality grade is low andt he agricultural land quality is poor.Dry land is the main farmland in Lingyuan city.The quality is so poor thatt he overall quality of agricultural land remains at a low level.Therefore,the use of organic fertilizer and enrichf ertility should be pay more attention to and the development of agricultural production should be promoted int he dry field management.

关 键 词：凌源市 农用地分等 自然质量等 土壤质量 

分 类 号：S158[农业科学—土壤学]