水土保持学报2012，Vol.26Issue(6)：234-237,242,5.
重庆地区中性紫色土酸化特征
The Acidification Characteristics of Neutral Purple Soil in Chongqing District
摘要
Abstract
The object of this study was to research the characteristics of neutral purple soil(NPS) which had acidified in Chongqing district.There were 19 soil profile samples which were collected to analyze.The results showed that that: NPS in Chongqing district had acidified in some extent,the acidification degree was arable layer〉subsoil layer〉 bottom layer,but not same in different area because of the geographic and geomorphic conditions,planting patterns,farm management ways.Soil acidification made the exchangeable K+ content increase,but the content of exchangeable Ca2+,exchangeable Mg2+,base exchange capacity,base saturation percentage decreased.Soil acidification didn't have significant influence on organic matter,total nitrogen,total phosphor,total potassium,available nitrogen and available phosphor,but enhanced the decomposition of soil minerals,made the content of available potassium increase significantly.The main reasons of NPS acidification were improper farm management ways,the usage of nitrogenous and phosphorus fertilizer in large scale.关键词
重庆/中性紫色土/酸化Key words
Chongqing/neutral purple soil/acidification分类
农业科技引用本文复制引用
李忠意,程永毅,杨剑虹..重庆地区中性紫色土酸化特征[J].水土保持学报,2012,26(6):234-237,242,5.
