Changes of Labile Organic Carbon Fractions in Soils Under Different Rotation Systems

被引：0
作者：
NI JinZhi XU JianMing XIE ZhengMiao and WANG DeJian School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaEmail nijzustc edu cnDepartment of Resource Science College of Environmental and Resource Sciences Zhejiang UniversityHangzhou China Institute of Soil Science Chinese Academy of Sciences Nanjing China [1 ,230026 ,2 ,310029 ,3 ,210008 ]
机构：
来源：
Pedosphere | 2004年 / 01期
关键词：
13C-NMR; rotation system; soil microbial biomass carbon; soil water-soluble organic carbon;
D O I：
暂无
中图分类号：
S158 [土壤肥力（土壤肥沃性）];
学科分类号：
0903 ; 090301 ;
摘要：
<正> Soil labile (biologically active) organic carbon fractions under different crop rotation systems in Jiangsu Province, China, were investigated after 10 years of rotation. The rotation systems, including green manure-rice-rice (GmRR), wheat-rice-rice (WRR), wheat-rice (WR) and wheat/corn intercrop-rice (WCR) rotations, were established on paddy soils using a randomized complete block design with three replicates. The total organic carbon (TOC), total nitrogen (TN) and water-soluble organic carbon (WSOC) in the soils under different systems were greater in the GmRR and WRR than in the WR and WCR rotation systems because the soils under triple cropping often received more crop residues than the soils under double cropping. Both the WSOC and the microbial biomass carbon (MBC) contents in the soils of the GmRR rotation system
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页码：103 / 109
页数：7
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