现代农业科技
現代農業科技
현대농업과기
XIANDAIHUA NONGYE
2012年
16期
249-250,260
,共3页
啤酒大麦原种场%耕地地力评价%地理信息系统%土壤养分
啤酒大麥原種場%耕地地力評價%地理信息繫統%土壤養分
비주대맥원충장%경지지력평개%지리신식계통%토양양분
beer barley seed farm%evaluation of cultivated land productivity%GIS%soil nutrients
以甘肃省啤酒大麦原种场耕地为例,利用GIS,通过土壤图和土地利用现状图叠置划分评价单元,系统聚类与Delphi法相结合筛选参评因素,层次分析法（AHP）确定其权重,模糊评判法确定耕地地力等级,甘肃省啤酒大麦原种场耕地等级共分5级,其中一等地11.35 hm2,二等地192.27 hm2,三等地205.05 hm2,五等地194.42 hm2,分别占总耕地面积的1.88%、31.88%、34.00%、32.24%。耕地土壤养分含量普遍较低,并且不同等级耕地的土壤养分含量状况存在一定的差异性。
以甘肅省啤酒大麥原種場耕地為例,利用GIS,通過土壤圖和土地利用現狀圖疊置劃分評價單元,繫統聚類與Delphi法相結閤篩選參評因素,層次分析法（AHP）確定其權重,模糊評判法確定耕地地力等級,甘肅省啤酒大麥原種場耕地等級共分5級,其中一等地11.35 hm2,二等地192.27 hm2,三等地205.05 hm2,五等地194.42 hm2,分彆佔總耕地麵積的1.88%、31.88%、34.00%、32.24%。耕地土壤養分含量普遍較低,併且不同等級耕地的土壤養分含量狀況存在一定的差異性。
이감숙성비주대맥원충장경지위례,이용GIS,통과토양도화토지이용현상도첩치화분평개단원,계통취류여Delphi법상결합사선삼평인소,층차분석법（AHP）학정기권중,모호평판법학정경지지력등급,감숙성비주대맥원충장경지등급공분5급,기중일등지11.35 hm2,이등지192.27 hm2,삼등지205.05 hm2,오등지194.42 hm2,분별점총경지면적적1.88%、31.88%、34.00%、32.24%。경지토양양분함량보편교저,병차불동등급경지적토양양분함량상황존재일정적차이성。
Taking beer barley seed farm of Gansu Province as the research area,overlay method between soil map and land use map were adopted to produce evaluation units,evaluation factors were chosen by Delphi approach and cluster analysis with their weights determined by AHP method.Finally the grades of cultivated land fertility were evaluated by fuzzy discrimination method.According to the integrated fertility index of all the evaluate units,cultivated land fertility on beer barley seed farm of Gansu Province was classified into five grades.The area and percentage of the first,second,third,fourth and fifth grade were 11.35 hm2（1.88%）,192.27 hm2（31.88%）,205.05 hm2（34.00%） and 194.42 hm2（32.24%）,respectively.The soil nutrient status was primarily evaluated according to the classification criterion of soil nutrient of Gansu Province.The results showed that soil nutrients content on beer barley seed farm of Gansu Province was lower in general.
