期刊论文

Stability of soil aggregate and its relationship with carbon nitrogen ratio in rice-tobacco rotation areas in Hunan province

Li, J.

中文

中国烟草学报

1004-5708

2020

26

1

75-83

10.16472/j.chinatobacco.2019.272

湖南省烟草公司科技项目“湖南稻作烟区合理耕层构建与土壤培肥关键技术研究与应用”（湘烟科[2017]170）；

本校为第一且通讯机构

【目的】明确湖南省烟稻轮作区不同土层土壤团聚体分布特征及其与碳氮比的关系。【方法】于2017年采集湖南郴州、衡阳和长沙烟区150个土壤样品,探讨了不同土层土壤团聚体的粒级含量、分布特征和稳定性,通过相关分析研究了土壤团聚体稳定性与碳氮比的关系。【结果】1)湖南省烟稻轮作区以>1 mm粒级土壤团聚体为主,百分比含量为64.47%;土壤碳氮比均值为9.66,变幅在3.69~14.06之间。各粒级土壤团聚体含量从高到低依次为>1 mm、0.5~1 mm、0.25~0.5 mm、

The objective of this study is to clarify the distribution characteristics of soil aggregates in different soil layers as well as its relationship with C/N in rice-tobacco rotation area of Hunan province. In 2017, 150 soil samples were collected from Chenzhou, Hengyang and Changsha of Hunan province. The size fraction, distribution characteristics and stability of soil aggregates in different soil layers were discussed. The relationship between the soil aggregate stability and C/N was studied by correlation analysis. The results indicated that ...