晋北高寒区坡改梯农田土壤养分状况研究

Soil nutrient condition of terraced farmland in north Shanxi alpine region

本文以坡改梯田(1a)与坡耕地耕作层土壤为研究对象,分析全氮、有机质、速效磷及速效钾的含量变化特征.结果表明:(1)与坡耕地相比,坡改梯田1a后耕作层土壤全氮、有机质、速效磷、速效钾含量分别减少了21.38%、24.81%、8.29%、10.18%;(2)坡改梯田、坡耕地土壤养分含量均随土壤深度的增大而减少.

In this paper,the soils of terraced fields(1 year)and sloping cultivated land were taken as the research objects,and the content change characteristics of total nitrogen,organic matter,available phosphorus and available potassium were analyzed.The results showed that:(1)Compared with slope farmland,the contents of total nitrogen,organic matter,available phosphorus and available potassium in the tillage layer soil decreased by 21.38%、24.81%、8.29%and 10.18%respectively after 1 year of sloping terraces;(2)The soil nutrient content of terraced fields and slope farmland decreased with the increase of soil depth.