Irrigation regime affected SOC content rather than plow layer thickness of rice paddies: A county level survey from a river basin in lower Yangtze valley, China

Zichuan Li, Xinwang Xu, Genxing Pan*, Pete Smith, Kun Cheng

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)
4 Downloads (Pure)

Abstract

While the impacts of farm management practices such as fertilization, tillage and straw return on soil organic carbon dynamics in croplands have been widely studied, the effects of irrigation management in irrigated rice paddies have not yet been widely assessed. Changes in plow layer thickness and soil organic carbon content of rice paddies were analyzed using data obtained in a county-level survey of soil fertility conducted in 2005 and 2006 in Guichi County, Anhui Province, China. Both soil thickness and organic carbon content of plow layer showed skewed normal distributions, with their averages of 14.58 +/- 3.92 cm, and 16.45 +/- 6.02 g/kg, respectively. The irrigation method was found to have significant influences on both plow layer thickness and soil organic carbon content, as the plow layer thickness and soil organic carbon content had an inverse response to the irrigation intensity derived from different irrigation methods. The land-level performance of irrigation/drainage infrastructure and the irrigation water sources were detected to have significant effect on plow layer thickness, but little influence on soil organic carbon content. While the capacity of irrigation/drainage infrastructure had a remarkable effect on soil organic carbon content but little impact on plow layer thickness. However, the irrigation condition for surveyed fields was detected to have little effect on both plow layer thickness and soil organic carbon content. These results indicated that irrigation management should keep the balance between surface erosion on plow layer thickness and soil organic carbon accumulation. Hence, developing new technique for good irrigation infrastructure and water management in future will help soil organic carbon accumulation as well as improve the soil for enhanced crop growth in rice agriculture. (C) 2016 Published by Elsevier B.V.

Original languageEnglish
Pages (from-to)31-39
Number of pages9
JournalAgricultural Water Management
Volume172
Early online date22 Apr 2016
DOIs
Publication statusPublished - 1 Jul 2016

Keywords

  • Irrigation management
  • Rice paddy
  • Soil thickness
  • Soil organic carbon
  • Irrigation water source
  • soil colloidal suspensions
  • topsoil organic-carbon
  • sequential reduction processes
  • stability behavior
  • water management
  • lowland rice
  • lake region
  • P losses
  • land-use
  • fields

Cite this

Irrigation regime affected SOC content rather than plow layer thickness of rice paddies : A county level survey from a river basin in lower Yangtze valley, China. / Li, Zichuan; Xu, Xinwang; Pan, Genxing; Smith, Pete; Cheng, Kun.

In: Agricultural Water Management, Vol. 172, 01.07.2016, p. 31-39.

Research output: Contribution to journalArticle

@article{6c0fc18376984860b287e1d497522788,
title = "Irrigation regime affected SOC content rather than plow layer thickness of rice paddies: A county level survey from a river basin in lower Yangtze valley, China",
abstract = "While the impacts of farm management practices such as fertilization, tillage and straw return on soil organic carbon dynamics in croplands have been widely studied, the effects of irrigation management in irrigated rice paddies have not yet been widely assessed. Changes in plow layer thickness and soil organic carbon content of rice paddies were analyzed using data obtained in a county-level survey of soil fertility conducted in 2005 and 2006 in Guichi County, Anhui Province, China. Both soil thickness and organic carbon content of plow layer showed skewed normal distributions, with their averages of 14.58 +/- 3.92 cm, and 16.45 +/- 6.02 g/kg, respectively. The irrigation method was found to have significant influences on both plow layer thickness and soil organic carbon content, as the plow layer thickness and soil organic carbon content had an inverse response to the irrigation intensity derived from different irrigation methods. The land-level performance of irrigation/drainage infrastructure and the irrigation water sources were detected to have significant effect on plow layer thickness, but little influence on soil organic carbon content. While the capacity of irrigation/drainage infrastructure had a remarkable effect on soil organic carbon content but little impact on plow layer thickness. However, the irrigation condition for surveyed fields was detected to have little effect on both plow layer thickness and soil organic carbon content. These results indicated that irrigation management should keep the balance between surface erosion on plow layer thickness and soil organic carbon accumulation. Hence, developing new technique for good irrigation infrastructure and water management in future will help soil organic carbon accumulation as well as improve the soil for enhanced crop growth in rice agriculture. (C) 2016 Published by Elsevier B.V.",
keywords = "Irrigation management, Rice paddy, Soil thickness, Soil organic carbon, Irrigation water source, soil colloidal suspensions, topsoil organic-carbon, sequential reduction processes, stability behavior, water management, lowland rice, lake region, P losses, land-use, fields",
author = "Zichuan Li and Xinwang Xu and Genxing Pan and Pete Smith and Kun Cheng",
note = "Acknowledgements This work was funded by Natural Science Foundation of China under grant numbers of 41071337 and 40830528 and jointly by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.",
year = "2016",
month = "7",
day = "1",
doi = "10.1016/j.agwat.2016.04.009",
language = "English",
volume = "172",
pages = "31--39",
journal = "Agricultural Water Management",
issn = "0378-3774",
publisher = "Elsevier",

}

TY - JOUR

T1 - Irrigation regime affected SOC content rather than plow layer thickness of rice paddies

T2 - A county level survey from a river basin in lower Yangtze valley, China

AU - Li, Zichuan

AU - Xu, Xinwang

AU - Pan, Genxing

AU - Smith, Pete

AU - Cheng, Kun

N1 - Acknowledgements This work was funded by Natural Science Foundation of China under grant numbers of 41071337 and 40830528 and jointly by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - While the impacts of farm management practices such as fertilization, tillage and straw return on soil organic carbon dynamics in croplands have been widely studied, the effects of irrigation management in irrigated rice paddies have not yet been widely assessed. Changes in plow layer thickness and soil organic carbon content of rice paddies were analyzed using data obtained in a county-level survey of soil fertility conducted in 2005 and 2006 in Guichi County, Anhui Province, China. Both soil thickness and organic carbon content of plow layer showed skewed normal distributions, with their averages of 14.58 +/- 3.92 cm, and 16.45 +/- 6.02 g/kg, respectively. The irrigation method was found to have significant influences on both plow layer thickness and soil organic carbon content, as the plow layer thickness and soil organic carbon content had an inverse response to the irrigation intensity derived from different irrigation methods. The land-level performance of irrigation/drainage infrastructure and the irrigation water sources were detected to have significant effect on plow layer thickness, but little influence on soil organic carbon content. While the capacity of irrigation/drainage infrastructure had a remarkable effect on soil organic carbon content but little impact on plow layer thickness. However, the irrigation condition for surveyed fields was detected to have little effect on both plow layer thickness and soil organic carbon content. These results indicated that irrigation management should keep the balance between surface erosion on plow layer thickness and soil organic carbon accumulation. Hence, developing new technique for good irrigation infrastructure and water management in future will help soil organic carbon accumulation as well as improve the soil for enhanced crop growth in rice agriculture. (C) 2016 Published by Elsevier B.V.

AB - While the impacts of farm management practices such as fertilization, tillage and straw return on soil organic carbon dynamics in croplands have been widely studied, the effects of irrigation management in irrigated rice paddies have not yet been widely assessed. Changes in plow layer thickness and soil organic carbon content of rice paddies were analyzed using data obtained in a county-level survey of soil fertility conducted in 2005 and 2006 in Guichi County, Anhui Province, China. Both soil thickness and organic carbon content of plow layer showed skewed normal distributions, with their averages of 14.58 +/- 3.92 cm, and 16.45 +/- 6.02 g/kg, respectively. The irrigation method was found to have significant influences on both plow layer thickness and soil organic carbon content, as the plow layer thickness and soil organic carbon content had an inverse response to the irrigation intensity derived from different irrigation methods. The land-level performance of irrigation/drainage infrastructure and the irrigation water sources were detected to have significant effect on plow layer thickness, but little influence on soil organic carbon content. While the capacity of irrigation/drainage infrastructure had a remarkable effect on soil organic carbon content but little impact on plow layer thickness. However, the irrigation condition for surveyed fields was detected to have little effect on both plow layer thickness and soil organic carbon content. These results indicated that irrigation management should keep the balance between surface erosion on plow layer thickness and soil organic carbon accumulation. Hence, developing new technique for good irrigation infrastructure and water management in future will help soil organic carbon accumulation as well as improve the soil for enhanced crop growth in rice agriculture. (C) 2016 Published by Elsevier B.V.

KW - Irrigation management

KW - Rice paddy

KW - Soil thickness

KW - Soil organic carbon

KW - Irrigation water source

KW - soil colloidal suspensions

KW - topsoil organic-carbon

KW - sequential reduction processes

KW - stability behavior

KW - water management

KW - lowland rice

KW - lake region

KW - P losses

KW - land-use

KW - fields

U2 - 10.1016/j.agwat.2016.04.009

DO - 10.1016/j.agwat.2016.04.009

M3 - Article

VL - 172

SP - 31

EP - 39

JO - Agricultural Water Management

JF - Agricultural Water Management

SN - 0378-3774

ER -