Effects of Rotation Tillage within a Year on Distributions of Organic Carbon and Nitrogen in Soil Water-Stable Aggregates in Wheat-Maize Double-Cropping System
Nie Liangpeng
Li Zengjia
Ning Tangyuan
Guo Liwei
Feng Yupeng
Li Na
Ding Na
Abstract：Six rotation tillage modes were used to study the effects of different rotation tillage modes with-in a year on the distributions of organic carbon and nitrogen in soil water -stable aggregates in wheat -maize double-cropping system in North China Plain .The effects of wheat and maize both no -tillage ( WZ-MZ) , wheat no-tillage and maize subsoiling (WZ-MS), wheat subsoiling and maize no -tillage (WS-MZ), wheat and maize both subsoiling ( WS-MS) , wheat conventional tillage and maize no -tillage ( WC-MZ) , wheat conventional tillage and maize subsoiling ( WC-MS) were compared under the same sowing date and seedling densities .The results showed that the rotation tillage mode of MS within a year was better for soil mi-cro aggregate gathering into larger aggregates in 0~40 cm soil layer and protecting large aggregates from dam-age than MZ.Under maize no -tillage or subsoiling condition , compared with WZ and WC , WS could im-prove the content of large aggregate (>0.25 mm) in 10~40 cm soil layer.Compared with WC, WZ and WS could significantly increase the soil organic carbon and total nitrogen content in surface soil and make more carbon and nitrogen gathering in surface soil .MS could reduce the soil organic carbon and total nitrogen con-tent in the aggregates in 0~10 cm soil layer and raise those in 10~40 cm soil layer than MZ .WZ could sig-nificantly increase the C/N in the aggregates in 0~10 cm soil layer .No matter what tillage mode of wheat , MS could reduce the C/N in the aggregates in 0~10 cm soil layer and raise that in 10~40 cm soil layer than MZ.
Keywords：Rotation tillage within a yearMaize-wheat double -croppingSoil water-stable aggre-gateDistributions of organic carbon and nitrogen
Publication Date：2014-09-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 63-68 )