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	Rice root growth and nutrient uptake as influenced by organic manure in continuously and alternately flooded paddy soils
	Yang, CM; Yang, LZ; Yang, YX; Zhu, OY
刊名	AGRICULTURAL WATER MANAGEMENT
	2004-10-15
卷号	70期号:1页码:67-81
关键词	alternate wetting and drying fair-yard manure lowland rice (Orzya sativa L.) nutrient uptake root morphology and activity
ISSN号	0378-3774
DOI	10.1016/j.agwat.2004.05.003
通讯作者	Yang, CM(yangcm@igsnrr.ac.cn)
英文摘要	Rice (Oryza sativa L.) root systems play an important role in uptake of water and nutrients from soil. A 4-year field experiment was conducted to determine the effects of different nutrient and water regimes on root growth by measuring the root diameter, root density, and root activity. Three nutrient regimes were used: (i) combined application of chemical fertilizers with farmyard manure (CM), (ii) integrated use of chemical fertilizers and wheat straw (CS), (iii) chemical fertilizers only (CK). Two soil moisture regimes included continuous waterlogging (CWL) and alternate wetting and drying (AWD). Incorporation of organic sources into paddy soil markedly improved root morphological characteristics of rice plant. In the alternate wetting and drying (AWD), root length density (RLD), and root weight density (RWD) for organic fertilization treatments (CS and CM) increased by 30 and 40%, respectively, as compared with the sole chemical fertilization (CF). Relative to root activity, CWL had adverse effects on root active absorption area (AAA), root oxidation ability of alpha-naphthylamine (alpha-NA) (ROA), and root surface phosphatase (RSP) of rice plants treated by integrated application of organic and inorganic fertilizers. In particular for the CM treatment, the AAA, ROA, and RSP of rice plants by the continuous flooding decreased by 22, 28, and 35%, respectively, compared to the alternately flooded regime. In the water regime of AWD, incorporation of organic manure significantly increased N, P, and K uptake by rice plants and facilitated the allocation and transfer of nutrient elements, especially P to rice ears and grains. This resulted in significant increases in the filled grains panicle(-1), 1000-grain weight and grain yield. The beneficial effects of integrated use of organic and mineral fertilizers on grain yield were significantly (P < 0.05) decreased by the water regime of CWL. (C) 2004 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	CHEMICAL-PROPERTIES ; WATER MANAGEMENT ; LOWLAND RICE ; PRODUCTIVITY ; SYSTEM ; ISSUES ; NUTRITION ; IRON
WOS研究方向	Agriculture ; Water Resources
WOS类目	Agronomy ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000224351700005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558425
专题	南京土壤研究所
通讯作者	Yang, CM
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 3.Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China
推荐引用方式 GB/T 7714	Yang, CM,Yang, LZ,Yang, YX,et al. Rice root growth and nutrient uptake as influenced by organic manure in continuously and alternately flooded paddy soils[J]. AGRICULTURAL WATER MANAGEMENT,2004,70(1):67-81.
APA	Yang, CM,Yang, LZ,Yang, YX,&Zhu, OY.(2004).Rice root growth and nutrient uptake as influenced by organic manure in continuously and alternately flooded paddy soils.AGRICULTURAL WATER MANAGEMENT,70(1),67-81.
MLA	Yang, CM,et al."Rice root growth and nutrient uptake as influenced by organic manure in continuously and alternately flooded paddy soils".AGRICULTURAL WATER MANAGEMENT 70.1(2004):67-81.

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