泥河沟流域不同土地利用土壤养分分析  

Soil Nutrients of Different Land Using Pattern in Nihegou Watershed

作　　者：张玉斌[1] 吴发启[2] 曹宁[2] 李飞敏[2] 

机构地区：[1]中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室 [2]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《水土保持通报》2005年第2期23-26,共4页Bulletin of Soil and Water Conservation

基　　金：黄委会水土保持基金"坡面措施减水减沙机理研究(2001-03-01-03);陕西省科技攻关项目"黄土高原退耕区林(草)的适宜性研究(200ZK02-G9-04)

摘　　要：测定并分析了黄土高原沟壑区淳化县境内泥河沟流域不同土地利用方式下土壤养分含量,结果发现流域内有机质、磷素和氮素的含量不高,尤其是氮素缺乏,相对钾素含量比较丰富。对林草地与水平梯田、坡耕地等农田土壤养分的比较分析,发现林草地在改善土壤养分方面比耕地效果明显。Soil nutrients of different land using in gully region of the Loess Plateau is analyzed. The contents of nutrients, such as organic matter, P and N, were low. The content of N was very poor. The contents of K were higher than others. By comparing the nutrients, it is found that the contents of soil nutrient in forest-grass land were higher than in orchard land and agriculture land.

关 键 词：泥河沟流域 土地利用方式 土壤养分 林草地 耕地 水土保持 

分 类 号：S158[农业科学—土壤学] S159.2[农业科学—农业基础科学]