Effects of long-term irrigation on soil phosphorus under temperate grazed pasture

doi:10.1111/ejss.12512

CORC > 沈阳应用生态研究所 > 中国科学院沈阳应用生态研究所 > 沈阳应用生态研究所 > 期刊论文

	Effects of long-term irrigation on soil phosphorus under temperate grazed pasture
	Boitt, G.1; Tian, J.2,3; Black, A.4; Wakelin, S. A.5; Condron, L. M.1
刊名	EUROPEAN JOURNAL OF SOIL SCIENCE
	2018
卷号	69 期号:1 页码:95-102
ISSN号	1351-0754
DOI	10.1111/ejss.12512
英文摘要	The effect of 62 years of different irrigation regimes on the amounts, forms and distribution of phosphorus (P) in the soil profile to 100 cm under grazed pasture was determined. Irrigation treatments included nil irrigation (base average rainfall of 740 mm year(-1); control), together with flood irrigation applied when gravimetric moisture (GM) in the topsoil decreased below 10 or 20% (i.e. rainfall + 260 mm year(-1) of supplemental irrigation [irrigation(10%GM)] and rainfall + 770 mm year(-1) [irrigation(20%GM)], respectively). Phosphorus fertilizer in the form of single superphosphate was applied annually at the rate of 23 kg P ha(-1) to all treatments. Total soil profile P was smallest under the large rate of irrigation (5054 kg P ha(-1)) compared with the small rate (5908 kg P ha(-1)) and the control (6423 kg P ha(-1)), which was attributed mainly to changes in inorganic P. These data indicated that markedly more P was removed, transferred or lost under irrigation. Substantial increases in pasture production and animal grazing capacity occurred in response to irrigation, which in turn resulted in increased removal and transfer of P in animal products, animal excreta (stock camp transfer and irrigation outwash) and by leaching. Thus, combined annual removal of P in animal products, internal dung transfer and loss in irrigation outwash were directly related to irrigation frequency and increased from 8 to 18.6 kg P ha(-1) for the irrigation(10%GM) and irrigation(20%GM) treatments, respectively.
WOS研究方向	Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000427881900012
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/109253]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
通讯作者	Boitt, G.
作者单位	1.Lincoln Univ, Fac Agr & Life Sci, Dept Soil Sci, POB 85084,Ellesmere Junct Rd Springs Rd, Christchurch 7647, New Zealand 2.Chinese Acad Sci, Inst Appl Ecol, POB 417, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Lincoln Univ, Bioprotect Res Ctr, POB 85084,Ellesmere Junct Rd Springs Rd, Lincoln 7647, New Zealand 5.Scion Res, Dept Forest Syst, POB 29237, Christchurch 8540, New Zealand
推荐引用方式 GB/T 7714	Boitt, G.,Tian, J.,Black, A.,et al. Effects of long-term irrigation on soil phosphorus under temperate grazed pasture[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2018,69(1):95-102.
APA	Boitt, G.,Tian, J.,Black, A.,Wakelin, S. A.,&Condron, L. M..(2018).Effects of long-term irrigation on soil phosphorus under temperate grazed pasture.EUROPEAN JOURNAL OF SOIL SCIENCE,69(1),95-102.
MLA	Boitt, G.,et al."Effects of long-term irrigation on soil phosphorus under temperate grazed pasture".EUROPEAN JOURNAL OF SOIL SCIENCE 69.1(2018):95-102.