Effects of Tillage Systems on Total Organic Carbon and Particulate Organic Carbon in a Purple Paddy Soil

CHEN Lu-hao; JIANG Chang-sheng; WU Yan

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Effects of Tillage Systems on Total Organic Carbon and Particulate Organic Carbon in a Purple Paddy Soil

更新时间：2024-11-07

- Effects of Tillage Systems on Total Organic Carbon and Particulate Organic Carbon in a Purple Paddy Soil
- Vol. 25, Issue 4, (2011)
- 作者机构：
  
  1. 西南大学三峡库区生态环境教育部重点实验室西南大学资源环境学院
  2. 重庆市三峡库区农业面源污染控制工程技术研究中心
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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CHEN Lu-hao, JIANG Chang-sheng, WU Yan. Effects of Tillage Systems on Total Organic Carbon and Particulate Organic Carbon in a Purple Paddy Soil[J]. 2011, 25(4).
DOI：

CHEN Lu-hao, JIANG Chang-sheng, WU Yan. Effects of Tillage Systems on Total Organic Carbon and Particulate Organic Carbon in a Purple Paddy Soil[J]. 2011, 25(4). DOI：

摘要

为研究耕作方式对西南地区紫色水稻土总有机碳及颗粒态有机碳的影响

以1989年设立的位于西南大学农场的农业部重庆紫色土生态环境重点野外科学观测试验站内的长期免耕试验田为对象

研究在冬水田平作(DP)、水旱轮作(SH)、垄作免耕(LM)、厢作免耕(XM)和垄作翻耕(LF)5种不同耕作方式下

土壤中总有机碳(TOC)含量、颗粒态有机碳(POC)含量、颗粒态土壤质量分数和颗粒态有机碳分配比在土壤中的分布特点。结果表明

不同的耕作方式主要对表层土壤的TOC、POC分布产生显著影响

其中LM对提高积累TOC和POC贡献最大;0-60 cm土层TOC含量变化范围为7.10～34.45 g/kg

颗粒态土壤质量分数所占比例为30.38%～45.65%

POC含量为1.31～19.39 g/kg

各数值基本变化趋势都是随土壤深度的增加而减小。TOC与POC都可作为评价耕作方式影响紫色水稻土土壤质量变化与固碳能力的有效指标

但相同耕作制度下POC变化幅度更大

对其响应也更为敏感。从TOC和POC的关系来看

不同耕作制度下有机碳的增加与土壤物理保护能力的提高有关

免耕方式有利于有机碳以及颗粒态有机碳的保护和稳定。

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LIU Zhi-xiang1,HAO Qing-ju1,2,JIANG Chang-sheng1,ZHU Tao1(1.Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education),College of Resources and Environment,Southwest University,Chongqing 400715,2.Chongqing Engineering Research Center for Agricultural Non-point Source Pollution Control in the Three Gorges Reservoir Area,)

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Anhui Key Laboratory of Nutrient Recycling, Resources and Environment, Institute of Soil and Fertilizer, Anhui Academy of Agricultural Sciences

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