江西农业大学学报2009，Vol.31Issue(5)：919-926,8.
南方丘陵地区水田土壤养分变异分析
The Analysis of Soil Nutrient Variability in Hilly Paddy Field of Southern China
摘要
Abstract
Based on the analysis on the nutrient data from the second soil survey in Fengxin County and those from the evaluation of arable soil nutrients in 2006 and the statistical analysis of area levels by Excel and ArcGIS statistical modules,the variation of soil nutrients in paddy fields in Fengxin County was analyzed. The results show that the organic matter and total nitrogen have no significang changes and keep a rich level , the change in the average is less than 0.06 units ; nitrogen, available phosphorus, potassium have been greatly improved, the average increases are 45.28,11.19 and 37.53 units respectively, the situation of phosphorus and potassium deficiency has been basicly reversed, but there is still a significant portion of paddy fields in potassium deficiency, unable to meet the needs of crops; the potassium -deficient paddy fields occupy 19.52% total aea of the paddy fields of the whole county; the soil acidification trend is abvious , the pH average value was dropped by 1.08 units, which has become an important retrictive factor in Fengxin County' s farmland quality.关键词
水田/土壤养分/养分变异/耕地质量Key words
paddy field /soil nutrient/nutrient variability/farmland quality分类
农业科技引用本文复制引用
周学文,赵小敏,胡国瑞,陈凤华,郭熙..南方丘陵地区水田土壤养分变异分析[J].江西农业大学学报,2009,31(5):919-926,8.基金项目
国家自然科学基金项目(30760048)和中科院知识创新重大项目(KSCX1-YW-09-08) （30760048）
