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	Organic phosphorus fractions in organically amended paddy soils in continuously and intermittently flooded conditions
	Yang, Changming; Yang, Linzhang; Lee Jianhua
刊名	JOURNAL OF ENVIRONMENTAL QUALITY
	2006-07-01
卷号	35期号:4页码:1142-1150
ISSN号	0047-2425
DOI	10.2134/jeq2005.0194
通讯作者	Yang, Changming(cmyang@mail.tongji.edu.cn)
英文摘要	Soil organic phosphorus (SOP) can greatly contribute to plant-available P and P nutrition. The study was conducted to determine the effects of organic amendments on organic P fractions and microbiological activities in paddy soils. Samples were collected at the Changshu Agro-ecological Experiment Station in Tabu Lake Basin, China, from an experiment that has been performed from 1999 to 2004, on a paddy soil (Gleysols). Treatments consisted of swine manure (SM), wheat straw (WS), swine manure plus wheat straw (SM + WS), and a control (chemical fertilization alone). Organic amendments markedly increased soil total organic phosphorus (TOP) and total organic carbon (TOC), especially in continuously flooded conditions. Based on the fractionation of SOP, organic amendments significantly increased soil labile organic phosphorus (LOP), moderately labile organic phosphorus (MLOP), and moderately stable organic phosphorus (MSOP) compared with the control. For SM and SM + WS treatments, LOP in continuously flooded soils decreased by 30.1 and 36.4%, respectively, compared to intermittently flooded soils. In organically amended soils, continuous flooding showed significantly lower microbial biomass phosphorus (MBP) and alkaline phosphatase activities (APA) than intermittent flooding. In intermittently flooded conditions, incorporating organic amendments into soil resulted in greater P uptake and biomass yield of rice than the control. In the intermittently flooded soils, APA (P < 0.05) and MBP (P < 0.01) were significantly and positively related to TOP, LOP, MLOP, and MSOP, whereas in continuously flooded soils, there was a significant (P < 0.05) negative relationship between MBP, TOP, and MSOP. Based on soil organic P fractions and soil enzymatic and microbiological activities, continuous flooding applied to paddy soils should be avoided, especially when swine manure is incorporated into paddy soil.
收录类别	SCI
WOS关键词	PHOSPHATASE-ACTIVITY ; CHEMICAL-PROPERTIES ; MICROBIAL BIOMASS ; GRASSLAND SOILS ; ACID-PHOSPHATASE ; GROWING-SEASON ; LOWLAND RICE ; CROP YIELDS ; DYNAMICS ; MANURE
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	AMER SOC AGRONOMY
WOS记录号	WOS:000239189900021
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558595
专题	南京土壤研究所
通讯作者	Yang, Changming
作者单位	1.Tongji Univ, Coll Environm Sci & Engn, Minist Educ, Key Lab Yangtze Aquat Environm, Shanghai 200092, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Yang, Changming,Yang, Linzhang,Lee Jianhua. Organic phosphorus fractions in organically amended paddy soils in continuously and intermittently flooded conditions[J]. JOURNAL OF ENVIRONMENTAL QUALITY,2006,35(4):1142-1150.
APA	Yang, Changming,Yang, Linzhang,&Lee Jianhua.(2006).Organic phosphorus fractions in organically amended paddy soils in continuously and intermittently flooded conditions.JOURNAL OF ENVIRONMENTAL QUALITY,35(4),1142-1150.
MLA	Yang, Changming,et al."Organic phosphorus fractions in organically amended paddy soils in continuously and intermittently flooded conditions".JOURNAL OF ENVIRONMENTAL QUALITY 35.4(2006):1142-1150.

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