江淮丘陵地区补充耕地质量评价  

Quality evaluation of supplementary cultivated land in Jianghuai hilly area

作　　者：詹雪洁 丁琪洵 周文强 汪甜甜 郭匿春 马友华 ZHAN Xue-jie;DING Qi-xun;ZHOU Wen-qiang;WANG Tian-tian;GUO Ni-chun;MA You-hua(Key Laboratory of Farmland Ecological Conservation and Pollution Prevention and Control in Anhui Province,College of Resources and Environment,Anhui Agricultural University,Hefei 230036,China)

机构地区：[1]安徽农业大学资源与环境学院农田生态保育与污染防控安徽省重点实验室,安徽合肥230036

出　　处：《江苏农业学报》2022年第6期1517-1523,共7页Jiangsu Journal of Agricultural Sciences

基　　金：农业农村部农田“耕地质量保护专项国家耕地质量监测”项目(21190017/125C0505);安徽省教育厅高校协同创新项目(GXXT-2019-047);安徽省科技重大专项(202003a06020002)。

摘　　要：为探讨区域性补充耕地的耕地质量评价方法,以安徽省江淮丘陵地区的全椒县和长丰县为研究区域,在确定基于生产适宜性、区域性特点和全国耕地质量等级评价分区基础上,运用层次分析法、专家咨询法和德尔菲法确定补充耕地质量评价指标体系,再利用GIS空间分析技术评价符合江淮丘陵地区农业生产条件的补充耕地质量等级。结果表明,研究区的补充耕地,已满足土体厚度≥50 cm、50 cm土体内地表碎屑物含量(地表砾石度)≤20%、土壤有机质含量≥6 g/kg和地形坡度<25°等农业生产基本条件。补充耕地的质量等级分布处于2等至7等,周边耕地的质量等级处于2等至6等。补充耕地质量综合等级为4.60,周边耕地的耕地质量综合等级为4.04。补充耕地土壤灌溉与排水能力高于周边(成熟)耕地,补充耕地土壤有机质、速效磷和速效钾含量低于周边(成熟)耕地。To clarify the quality evaluation methods of the regional supplementary cultivated land, Quanjiao County and Changfeng County in Jianghuai hilly region of Anhui province were taken as the research areas. Based on the production suitability, regional characteristics and the evaluation of national cultivated land quality levels, the analytic hierarchy process, expert consultation method and Delphi method were used to determine the supplementary cultivated land quality evaluation index system, and then the GIS spatial analysis technology was used to evaluate the quality grade of supplementary cultivated land in line with agricultural production conditions in the Jianghuai hilly area. The supplementary farmland had met the basic conditions of agricultural production in the study area, such as soil thickness of no less than 50 cm, the surface debris content(surface gravel degree) of no more than 20% in 50 cm soil, the soil organic matter content of no less than 6 g/kg and the topographic slope of less than 25°. The quality grades of supplementary cultivated land were distributed from two to seven, and the quality grades of surrounding cultivated land ranged from two to six. The comprehensive grade of supplemental cultivated land quality was 4.60, and the comprehensive quality grade of surrounding cultivated land was 4.04. The soil irrigation and drainage capacity of supplemented farmland was higher than that of surrounding(mature) farmland, and the contents of soil organic matter, available phosphorus and available potassium of supplemented farmland were lower than those of surrounding(mature) farmland.

关 键 词：补充耕地 江淮丘陵地区 农业生产条件 耕地质量评定 

分 类 号：S158[农业科学—土壤学]