Influence of Irrigation with Dairy Effluent on Soil Dissolved Organic Carbon and Its Distribution of the Section in the Corn Field
LIU Shimeng
CHEN Xiuhua
MO Kang
WANG Han
QU Yongsheng
LIAO Linxian
Abstract：Aiming to analyze the effect of livestocks waste water irrigation on soil total organic carbon,dissolved organic carbon and the proportion of them,lysimeter experiment was conducted including clear water irrigation and livestocks waste water irrigation with three irrigation amounts.The results showed that the contents of total organic carbon and dissolved organic carbon decreased with the increase of soil depth.Generally,the contents of the total organic carbon irrigated by livestocks waste water were higher than those under clear water irrigation, which showed that livestocks waste water irrigation would induce the increase of soil carbon content within a cer-tain range,especially in upper soil.The proportion of dissolved organic carbon to the total organic carbon gradual-ly increased with soil depth,as the decrement of soil total organic carbon increased with soil depth and decrement of soluble organic carbon decreased.Under the clear water irrigation,the content of total organic carbon in the surface soil was the highest when the irrigation amount was 640 m3/hm2 and the content of dissolved organic car-bon was the highest when the irrigation amount was 760 m3/hm2;under the livestocks waste water irrigation,both total organic carbon and dissolved organic carbon contents were the highest when the irrigation amount was 880 m3/hm2.Livestocks waste water irrigation is beneficial to the increase of the contents of soil total organic carbon and dissolved organic carbon and the accumulation of them in the upper soil.
Keywords：livestocks waste water irrigationsoil total organic carbondissolved organic carbon
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 39-43 )