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Potassium supply and adsorption capacity changes in a Chinese subtropical paddy soil chronosequence

文献类型：期刊论文

作者Han, Guang-Zhong2,3; Cao, Xiao-Ming4; Han, Bang-Shuai5; Yang, Fan2; Huang, Lai-Ming3,6; Wu, Yun-Jin1
刊名ARCHIVES OF AGRONOMY AND SOIL SCIENCE
出版日期2021-10-06
页码14
ISSN号0365-0340
关键词Paddy soil chronosequence quaternary red clay clay mineral potassium adsorption
DOI10.1080/03650340.2021.1985109
通讯作者Huang, Lai-Ming(huanglm@igsnrr.ac.cn) ; Wu, Yun-Jin(wyj@nies.org)
英文摘要An accurate assessment of the effect of long-term rice cultivation on K-supplying capacity and adsorption characteristics of paddy soils has theoretical and practical significance for rational application of K fertilizers. We measured changes in basic soil properties and K adsorption isotherms in a representative subtropical paddy soil chronosequence in Southern China. Results showed that mean water dissolvable K and non-exchangeable K contents of paddy soils (27.0 and 184.8 mg kg(-1)) were higher than those of original soils (15.5 and 169.5 mg kg(-1)), but the mean exchangeable K contents showed the opposite trend (paddy soils, 37.1 mg kg(-1); original soils, 52.5 mg kg(-1)). Long-term paddy cultivation caused reduced K-supplying capacity and K+ adsorption capacity of paddy soils in the red soil regions, which was attributed to the rapid loss of sorbents (e.g. Fe-d and clay) by leaching and the competitive occupation of sorption sites by the accumulated soil organic matter. The promotion of sustainable and balanced K fertilizer inputs and appropriate increase in short-term applications of K fertilizer (K fertilizer input > K output from harvest) during application of N and P fertilizers to paddy soils were necessary to maintain the K-supplying capacity of soils and the crop yield.
WOS关键词ORGANIC-MATTER ACCUMULATION ; CLAY-MINERALS ; CROP PRODUCTION ; IRON-OXIDES ; AMMONIUM ; FIXATION ; EVOLUTION ; RELEASE ; TRANSFORMATION ; MANAGEMENT
资助项目Sichuan Science and Technology Program[2018JY0527] ; National Natural Science Foundation of China[41977004] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019052] ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research[2017RC203]
WOS研究方向Agriculture
语种英语
出版者TAYLOR & FRANCIS LTD
WOS记录号WOS:000705345400001
资助机构Sichuan Science and Technology Program ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research
源URL[http://ir.igsnrr.ac.cn/handle/311030/166931]  
专题中国科学院地理科学与资源研究所
通讯作者Huang, Lai-Ming; Wu, Yun-Jin
作者单位1.Minist Ecol & Environm, Nanjing Inst Environm Sci, Nanjing 210042, Peoples R China
2.Neijiang Normal Univ, Coll Geog & Resources Sci, Lab Simulat Soil Proc, Neijiang, Sichuan, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
4.Chinese Acad Forestry, Inst Desertificat Studies, Beijing, Peoples R China
5.Ball State Univ, Environm Geol & Nat Resource, Muncie, IN 47306 USA
6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Han, Guang-Zhong,Cao, Xiao-Ming,Han, Bang-Shuai,et al. Potassium supply and adsorption capacity changes in a Chinese subtropical paddy soil chronosequence[J]. ARCHIVES OF AGRONOMY AND SOIL SCIENCE,2021:14.
APA Han, Guang-Zhong,Cao, Xiao-Ming,Han, Bang-Shuai,Yang, Fan,Huang, Lai-Ming,&Wu, Yun-Jin.(2021).Potassium supply and adsorption capacity changes in a Chinese subtropical paddy soil chronosequence.ARCHIVES OF AGRONOMY AND SOIL SCIENCE,14.
MLA Han, Guang-Zhong,et al."Potassium supply and adsorption capacity changes in a Chinese subtropical paddy soil chronosequence".ARCHIVES OF AGRONOMY AND SOIL SCIENCE (2021):14.

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来源：地理科学与资源研究所

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