新疆农业大学学报2025，Vol.48Issue(6)：512-522,11.DOI:10.20088/j.cnki.jxau.2025.06.008
阿克苏地区耕地土壤养分空间分布特征研究
Evaluation of Cultivated Land Soil Quality and Analysis of Obstacle Factors in Aksu Area
摘要
Abstract
In order to investigate the spatial distribution characteristics of soil nutrients and salinity in farmland of the Aksu Prefecture,a 1 km grid covering the cultivated land was generated with the fishnet tool in ArcGIS based on the 2020 land use data.During the process,spatial clustering was conducted on the grid units to provide a data reference for the layout of sampling sites.A total of 1 036 topsoil sampling sites were set up across three types of land use,namely,cultivated land,garden land and wasteland,inclu-ding 575 sites in cultivated land,238 in garden land and 223 in wasteland.The spatial distribution charac-teristics of soil nutrients and salinity were analyzed by means of classical statistical methods and the ordi-nary kriging interpolation method in ArcGIS.The results showed that in the soil samples collected from the Aksu Prefecture,the soil organic matter content was 9.33 g/kg,total nitrogen content 0.97 g/kg,total phosphorus content 0.74 g/kg,total potassium content 16.40 g/kg,alkali-hydrolyzable nitrogen content 29.79 mg/kg,available phosphorus content 19.32 mg/kg,and available potassium content 182.91 mg/kg.The high-value areas of organic matter and total nitrogen were distributed in the Kuqa River Basin;the high-value areas of alkali-hydrolyzable nitrogen were in the Toshgan River and Aksu River Basins;the high-value areas of available phosphorus were distributed in Wushi County,Awat County,Aksu City,Wen-su County,Alar City and Kalpin County;the high-value areas of total potassium and available potassium were in Xayar County and Wensu County;and the low-value areas of total salt were distributed in Kuqa City,Xinhe County and Xayar County.The regions with favorable soil fertility were concentrated in Kuqa City,Xinhe County and Xayar County.The soil in this area was weakly alkaline and exhibited varying de-grees of salinization.关键词
阿克苏地区/耕地土壤/养分/空间分布Key words
Aksu region/cultivated land soil/nutrients/space distribution分类
农业科技引用本文复制引用
张善杭,王宝,何明明,王月娟,范晓萱,海凤,盛建东..阿克苏地区耕地土壤养分空间分布特征研究[J].新疆农业大学学报,2025,48(6):512-522,11.基金项目
第三次新疆综合科学考察项目(2021xjkk0200) （2021xjkk0200）
