南京农业大学学报2013，Vol.36Issue(4)：7-12,6.DOI:10.7685/j.issn.1000-2030.2013.04.002
秸秆还田与耕作方式对稻麦轮作农田土壤碳库及结构的影响
Effects of different tillage and straw return on soil carbon pool and soil structure under rice-wheat rotation system
摘要
Abstract
A one and half years(2009-2011)field experiment was conducted to study the effects of different tillage and straw return and their interaction on soil carbon pool and soil structure under rice-wheat rotation cropland.The results showed that soil carbon pool was significantly affected by straw return,and soil total organic carbon (TOC),microbial biomass carbon (MBC),dissolved organic carbon(DOC) and water-stable aggregates organic carbon under straw return treatments ranked in the order:straw return for three consecutive seasons,straw return for two consecutive seasons,straw return for one season,which were all significantly higher than without straw return.Tillage factor also had significantly impact on soil carbon pool under rice-wheat rotation and the contents of TOC,MBC and DOC under rotary tillage were all higher than under plowing tillage,but no significant difference existed between them.There was no obvious difference between plowing and rotary tillage in different size water-stable aggregates organic carbon.The contents of TOC,MBC,DOC and water-stable aggregates organic carbon under rotary or plowing tillage with both rice and wheat straw return treatments were significantly higher than with other treatments.关键词
秸秆还田/耕作方式/稻麦轮作/土壤碳库Key words
straw return/ tillage methods / rice-wheat rotation / soil carbon pool分类
农业科技引用本文复制引用
胡乃娟,张四伟,杨敏芳,顾克军,韩新忠,张政文,卞新民,朱利群..秸秆还田与耕作方式对稻麦轮作农田土壤碳库及结构的影响[J].南京农业大学学报,2013,36(4):7-12,6.基金项目
国家科技支撑计划项目(2012BAD14B12) （2012BAD14B12）
