Cumulative effects of a 17-year chemical fertilization on the soil quality of cropping system in the Loess Hilly Region, China

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	Cumulative effects of a 17-year chemical fertilization on the soil quality of cropping system in the Loess Hilly Region, China
	Li, Qiang 1,2; Xu, Mingxiang 1,2,3; Liu, Guobin 1,2,3; Zhao, Yunge 1,2,3; Tuo, Dengfeng 3
刊名	JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
	2013-04-01
卷号	176 期号:2 页码:249-259
关键词	soil-quality index long-term field experiment chemical fertilizer principal component analysis Loess Hilly Region
通讯作者	Xu, MX (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dry Land Farming, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
英文摘要	Soil-quality assessment provides a tool for evaluating the sustainability of alternative soil-management practices. Understanding the effects of the long-term use of chemical fertilizers on soil quality is essential for sustaining soil productivity. The cumulative effect of a 17-y-old chemical-fertilizer application on integrated soil quality was investigated in the surface (015cm) and subsurface (1530cm) soils of a soybroomcornmillet cropping system with an experiment design of two factors with three levels for each factor. The treatments were N0P0, N0P1, N0P2, N1P0, N1P1 (local farmer' fertilization strategy), N1P2, N2P0, N2P1, N2P2, and a control NF. The objectives were to describe and quantify the effect of continuous applications of chemical fertilizer through soil-quality index (SQI) and attempt to offer an efficient and appropriate nutrient-supply strategy for the local region. Following 17 y of chemical fertilization, the SQI increased markedly in the studied soil layers, and soil chemical indicators changed more significantly than physical properties. The soil-quality indicators in the surface soil layer were more variable and sensitive to fertilizer application than the subsurface layer. The indicators that sensitively responded to long-term fertilization could be classified into three types: soil-fertility indicators (soil organic matter [SOM], total P, and available N), soil-texture indicators (clay, silt), and soil-structure indicators (bulk density, mean weight diameter [MWD]). The simplified indicators (SOM, sand, available N, bulk density, and total P in the surface soil and SOM, MWD, and silt content in the subsurface soil) preferably reflected the status of the integrated soil quality as influenced by continuous fertilization. Among the fertilized treatments, the combined-fertilizer treatments maintained a higher SQI than the single-fertilizer treatments in the surface and subsurface soils. The N1P2 treatment maintained the highest SQI in both soil layers, followed by N1P1 treatment. However, for the slope cropland, given the relative costs, soil resource, and environmental protection, the traditional treatment of N1P1 may be the optimal fertilizer treatment in the local region.
学科主题	Agriculture; Plant Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Agronomy ; Plant Sciences ; Soil Science
研究领域[WOS]	Agriculture ; Plant Sciences
关键词[WOS]	LONG-TERM-FERTILIZATION ; NITROGEN-FERTILIZER ; PHYSICAL-PROPERTIES ; FARMYARD MANURE ; ORGANIC-CARBON ; PRODUCTIVITY ; PLATEAU ; VEGETATION ; POOLS
语种	英语
WOS记录号	WOS:000316916600016
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7481]
专题	水保所科研产出--SCI_2013--SCI
作者单位	1.Chinese Acad Sci, State Key Lab Soil Eros & Dry Land Farming, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 3.Northwest Agr & Forestry Univ, State Key Lab Soil Eros & Dry Land Farming, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Qiang,Xu, Mingxiang,Liu, Guobin,et al. Cumulative effects of a 17-year chemical fertilization on the soil quality of cropping system in the Loess Hilly Region, China[J]. JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,2013,176(2):249-259.
APA	Li, Qiang,Xu, Mingxiang,Liu, Guobin,Zhao, Yunge,&Tuo, Dengfeng.(2013).Cumulative effects of a 17-year chemical fertilization on the soil quality of cropping system in the Loess Hilly Region, China.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,176(2),249-259.
MLA	Li, Qiang,et al."Cumulative effects of a 17-year chemical fertilization on the soil quality of cropping system in the Loess Hilly Region, China".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 176.2(2013):249-259.