| 引用本文: | 汪甜甜,费坤,江文娟,等.宣州区耕地质量等级评价及灌排能力对耕地质量影响[J].灌溉排水学报,0,():-. |
| WANG Tiantian,FEI Kun,JIANG Wenjuan,et al.宣州区耕地质量等级评价及灌排能力对耕地质量影响[J].灌溉排水学报,0,():-. |
|
| 摘要: |
| 【目的】查清宣州区耕地质量等级与主要养分的空间分布特征，了解灌排能力对耕地质量的影响，保护并提升耕地质量。【方法】在GIS技术和县域耕地资源管理信息系统软件支持下，利用层次分析法、Delphi法及模糊评价等方法对耕地质量进行综合性评价，并对等级结果、主要养分及灌排能力进行了分析。【结果】（1）宣州区耕地质量等级分为1~9个等级，平均等级为4.22等，其中高产田（1~3等级耕地）占全区耕地总面积的18.18%，主要分布在全区的北部及中部地区；中产田（4~6等级耕地）占全区耕地总面积的80.55%，在全区广泛分布；低产田（7~9等级耕地）占耕地总面积的1.27%，集中分布在南部地区。（2）宣州区耕地土壤平均有机质、有效磷和速效钾量分别为24.4 g/kg、19.56 mg/kg和115 mg/kg，均处于中等水平。（3）宣州区北部平原地形比南部山区地形耕地的灌溉能力更好，高阶地形比低阶地形耕地的排水能力更好；灌排能力为“充分满足”和“满足”的耕地，质量等级也普遍较高，集中在1~6等地，大多为高、中产田，而灌排能力为“基本满足”和“不满足”的耕地，质量等级一般较低，集中在4~9等地，大多为中、低产田。【结论】宣州区耕地质量平均等级为4.22等，北部相对于南部地区耕地灌排能力较好，质量等级普遍较高，灌排能力对耕地质量等级影响较大，可结合“高标准农田建设”项目来提高耕地灌排能力，提升耕地质量。 |
| 关键词: 耕地;耕地质量;等级评价;灌排能力;宣州区 |
| DOI： |
| 分类号:S157 |
| 基金项目:安徽省教育厅高校协同创新项目“国产高分辨率对地观测系统安徽区域综合应用示范-高分背景下安徽省耕地质量智慧管理与大数据应用”(No.GXXT-2019-047)；安徽省科技重大专项“现代农业遥感监测系统构建与产业化应用”(No.202003a06020002)；耕地质量保护专项-国家耕地质量监测(No.21190017)。 |
|
| Evaluation of cultivated land quality grade and influence of irrigation and drainage capacity on cultivated land quality in Xuanzhou District1 |
|
WANG Tiantian1, FEI Kun1, JIANG Wenjuan1, MA Zhongwen1, KUI Xiu2, MA Youhua1
|
|
1.Key Laboratory of farmland ecological conservation and pollution prevention and control of Anhui Province,College of resources and environment,Anhui Agricultural University;2.Xuanzhou District Bureau of planting
|
| Abstract: |
| 【Objective】The purpose of this paper is to find out the spatial distribution characteristics of cultivated land quality grade and main nutrients in Xuanzhou District, understand the influence of irrigation and drainage capacity on cultivated land quality, and protect and improve the quality of cultivated land.【Method】Under the support of GIS technology and county cultivated land resources management information system software, the comprehensive evaluation of cultivated land quality was carried out by using analytic hierarchy process, Delphi method and fuzzy evaluation method, and the grade results, main nutrients and irrigation and drainage capacity were analyzed.【Results】The results show that: (1) The cultivated land quality grade of Xuanzhou District is divided into 1~9 grades, with an average grade of 4.22. Among them, high-yield farmland (1~3 grades) accounts for 18.18% of the total cultivated land area, mainly distributed in the north and central regions of the region; middle yield farmland (4~6 grades) accounts for 80.55% of the total cultivated land area, widely distributed in the region; Low yield farmland (7~9 grades ) accounts for 1.27% of the total cultivated land area, which is mainly distributed in the southern region. (2) The average contents of soil organic matter, available phosphorus and available potassium in Xuanzhou District are respectively 24.4g/kg, 19.56mg/kg and 115mg/kg,which are in the middle level; the main nutrient contents of cultivated land with higher quality are also higher. (3) The irrigation capacity of the cultivated land in the northern plain is better than that in the southern mountainous area, and the drainage capacity of the cultivated land in the high-order terrain is better than that in the low-order terrain; The cultivated land with irrigation and drainage capacity of "fully satisfied" and "satisfied" is in higher quality level, which is concentrated in 1~6 grades, mostly high or middle yield fields, while the cultivated land with irrigation and drainage capacity of "basically satisfied" and "unsatisfied" is in lower quality level, which is concentrated in 4~9, mostly medium or low yield fields.【Conclusion】The average grade of cultivated land quality in Xuanzhou District is 4.22, and the irrigation and drainage capacity in the north is better than that in the south, and the quality grade is generally higher. The irrigation and drainage capacity has a greater impact on the quality grade of cultivated land. The "high standard farmland" construction project can be combined to improve the irrigation and drainage capacity of cultivated land and improve the quality of cultivated land. |
| Key words: cultivated land; cultivated land quality; grade evaluation;irrigation and drainage capacity;Xuanzhou District |
