期刊论文

Vertical Distribution of Electrical Conductivity and Cation Exchange Capacity in Soil and Their Relationship with Nutrient Availability in Rice-growing Tobacco Areas

中文

西南农业学报

1001-4829

2021

34

12

2700-2706

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)。

本校为第一机构

【目的】探明湖南主要稻作烟区土壤电导率（EC）与阳离子交换量（CEC）的垂直分布特征,为提高土壤保肥能力和构建合理耕层结构提供科学依据。【方法】考察湖南郴州、衡阳和长沙稻作烟区0～50 cm剖面土壤电导率和阳离子交换量垂直分布特征,并进行分区比较研究,揭示其与土壤养分的关系。【结果】湖南稻作烟区土壤电导率为0.10～0.17 mS/cm,随土层深度的增加逐渐下降,土壤阳离子交换量为10.55～14.35 cmol/kg,随土层深度的增加表现出先降后升趋势;长沙烟区0～30 cm土层保肥能力较弱,30～50 cm土层保肥能力中等,衡阳烟区0～50 cm土层保肥能力中等,郴州烟区0～20 cm土层保肥能力中等,20～30 cm土层保...

【Objective】To explore the vertical distribution of soil electrical conductivity(EC)and cation exchange capacity(CEC)in rice-growing tobacco areas of Hunan province,improve the soil fertility and construct a reasonable structure of the plough layer.【Method】The soil EC and CEC of 0-50 cm profiles in Chenzhou,Hengyang and Changsha rice-growing tobacco areas were systematically compared,and the relationship between them and soil nutrients was revealed.【Result】The results showed that the soil electrical conductivity ranged from 0.10 to 0.17 mS...