CAJ | 학술논문

为合理利用耕地和科学施肥提供依据,需对耕地地力进行评价和分等定级,并提出切实可行的利用建议。以江苏省溧阳市为研究区域;选择了成土母质、质地、坡度、坡向、障碍层类型、灌溉保证率、排涝模数、pH、有机质、有效磷、速效钾、水溶态硼等12个因素作为耕地地力评价因子;应用相关分析、因子分析、模糊评价、层次分析等数学分析原理,建立了一种定性与定量相结合的耕地地力等级评价的方法;以县域耕地资源管理信息系统（CLRMIS）和地理信息系统（GIS）为软件技术支撑将各种属性数据和空间数据进行处理与整合,将溧阳市58611.1 hm2耕地地力划分等级。结果表明,溧阳市耕地地力划分为5个等级,其中一等地9905.3 hm2,占耕地总面积的16.9%;二等地17759.1 hm2,占耕地总面积的30.3%;三等地22272.2 hm2,占耕地总面积的38.0%;四等地8557.2 hm2,占耕地总面积的14.6%;五等地117.3 hm2,占耕地总面积的0.2%。由此得出,利用计算机技术可以完全依据耕地自然要素评价地力,由此获得的评价结果既克服了凭经验确定分级指数主观方法的弊端,又避免了纯数学方法带有较大盲目性的弱点,能更准确地反映耕地的地力等级差异;同时,根据评价结果显示,耕地地力分级基本符合溧阳的实际,同时反映出溧阳市耕地地力的整体水平较高。提出生产利用建议具有较强的针对性和可操作性,便于在生产上应用。
위합리이용경지화과학시비제공의거,수대경지지력진행평개화분등정급,병제출절실가행적이용건의。이강소성률양시위연구구역;선택료성토모질、질지、파도、파향、장애층류형、관개보증솔、배로모수、pH、유궤질、유효린、속효갑、수용태붕등12개인소작위경지지력평개인자;응용상관분석、인자분석、모호평개、층차분석등수학분석원리,건립료일충정성여정량상결합적경지지력등급평개적방법;이현역경지자원관리신식계통（CLRMIS）화지리신식계통（GIS）위연건기술지탱장각충속성수거화공간수거진행처리여정합,장률양시58611.1 hm2경지지력화분등급。결과표명,률양시경지지력화분위5개등급,기중일등지9905.3 hm2,점경지총면적적16.9%;이등지17759.1 hm2,점경지총면적적30.3%;삼등지22272.2 hm2,점경지총면적적38.0%;사등지8557.2 hm2,점경지총면적적14.6%;오등지117.3 hm2,점경지총면적적0.2%。유차득출,이용계산궤기술가이완전의거경지자연요소평개지력,유차획득적평개결과기극복료빙경험학정분급지수주관방법적폐단,우피면료순수학방법대유교대맹목성적약점,능경준학지반영경지적지력등급차이;동시,근거평개결과현시,경지지력분급기본부합률양적실제,동시반영출률양시경지지력적정체수평교고。제출생산이용건의구유교강적침대성화가조작성,편우재생산상응용。
In order to provide basis for reasonable utilization of cultivated land and scientific fertilizer application,it is necessary to evaluate and classify fertility of cultivated land and make feasible suggestions for management.The studied area was Liyang City,Jiangsu Province,China,12 factors such as soil parent material,texture,slope,aspect,type of barrier layer,insurance probability of irrigation water,modulus of surface drainage,PH,organic matter,available phosphorous,available potassium,and water-soluble boron were selected as evaluation factors.With the BFIS,a method in both quantitative and qualitative natures was developed to grade the farmland productive capacity through correlation analysis,factor analysis,fuzzy evaluation,and hierarchic analysis respectively.With the support of software technology,the cultivated land resource management information system（CLRMIS） and geographic information system（GIS） were used for dealing and combining all kinds of data on properties and spaces.It is found that the total area of cultivated land in Liyang City was 58611.1 hm2,which was divided into five levels,i.e.,the 1st level with 9905.3 hm2