江西农业大学学报2016，Vol.38Issue(5)：986-994,9.DOI:10.13836/j.jjau.2016139
余干县耕地土壤养分时空变化特征研究
A Study on the Spatial-Temporal Changes of farmland Soil Nutrient of Yugan County
摘要
Abstract
In order to understand the evolution and development law of farmland soil fertility,the spatial⁃temporal changes of soil nutrient of farmland were analyzed by ArcGIS software based on soil survey data of 1985 and 2012 in Yugan County.The results showed that soil nutrients showed on upward trend in the overall, available P increased the fastest,overall improved by two grades;secondly organic matter and available nitro⁃gen,available potassium decreased slightly,but the overall level did not change. Soil fertility of farmland im⁃proved,which provided the theory basis for further using soil resources rationally,using and managing soil fer⁃tility,and promoting healthy and sustainable development of agriculture. The cultivation fashion and manage⁃ment were the main driving factors in the changes in the farmland soil nutrient in Yugan County.关键词
耕地/土壤养分/时空变异Key words
farmland/soil nutrient/spatial-temporal change分类
农业科技引用本文复制引用
乐丽红,朱安繁,侯英杰,谭斯坦,刘毅,张龙华,赵小敏..余干县耕地土壤养分时空变化特征研究[J].江西农业大学学报,2016,38(5):986-994,9.基金项目
国家自然科学基金项目（41361049）和江西省自然科学基金项目（20122BAB204012） Project supported by the National Natrural Science Foundation of China（41361049） and the National Natrural Science Foundation of Jiangxi Province （）
