欢迎访问《中国农学通报》,

中国农学通报 ›› 2014, Vol. 30 ›› Issue (36): 188-192.doi: 10.11924/j.issn.1000-6850.2014-1572

所属专题: 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

舟曲县耕地地力评价研究

江晶,董博   

  1. 甘肃农业大学,甘肃省农业科学院
  • 收稿日期:2014-06-03 修回日期:2014-12-29 接受日期:2014-07-01 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 江晶
  • 基金资助:
    甘肃省科技支撑计划项目 “旱作农田精确施肥技术研究” (1104NKCA093)。

Evaluation of Cultivated Land Fertility in Zhouqu County

  • Received:2014-06-03 Revised:2014-12-29 Accepted:2014-07-01 Online:2015-03-20 Published:2015-03-20

摘要: 在GIS的支持下采用图形叠置划分法划分土地评价单元,运用特尔斐法、层次分析法、模糊数学法结合ArcGIS软件快速准确地完成耕地地力评价,且分析其评价结果及空间分布,以期进一步了解舟曲的耕地地力现状。结果表明:舟曲县耕地总面积为15081.28 hm2,其耕地地力可划分为四等,一至四等地分别占耕地总面积的10.12%、31.52%、34.08%、24.28%。将评级结果属较低等级(二至四等)的耕地划定为中低产田,且中低产田占耕地总面积的89.88%,说明该地区的耕地质量的总体水平比较低。针对不同等级地力水平进行分析,找出其主要的限制因素,从而确定其土壤改良利用的方法和措施。

关键词: 分子标记, 分子标记

Abstract: Based on the geographic information system (GIS), the authors used soil distribution map, land utilization map and overlap method of administrative map, combined with the Tell Fay method to identify the affected factors and introduced Analytical Hierarch Program (AHP) and Fuzzy Mathematics Theory (FMT) to synthetically evaluate the farmland fertility and analyze its space distribution for further understanding of the cultivated land fertility conditions in the study area. The results showed that, 15081.28 hm2 farmlands could be divided into four grades, the cultivated land fertility of grade one to four account for 10.12%, 31.52%, 34.08% and 24.28%, respectively. The farmland which belongs to low level (from grade tow to four) was divided into middle and low yield field, and accounted for 89.88% of the total area of the cultivated land. Then, the authors analyzed the different levels of farmland fertility and found out the main limiting factors, in order to confirm the methods and measures of soil improvement and utilization.