Suitability of extractants for predicting available sulfur in natural grassland in the Inner Mongolia steppe of China

NWIPB OpenIR

	Suitability of extractants for predicting available sulfur in natural grassland in the Inner Mongolia steppe of China
	Cui, XY ; Wang, SP ; Wang, YF ; Xing, XR ; Chen, ZZ ; Haneklaus, S ; Fleckenstein, J ; Schnug, E
	2006
发表期刊	COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
卷号	37 期号:5-6 页码:721-732
文章类型	Article
摘要	It was the objective of this study to compare the suitability of different extractants for predicting the availability of sulfur (S) in natural grassland in a sulfur response trial on three different soil types in the Inner Mongolia steppe of China. For soil analysis, seven different extractants have been employed. The inorganic SO4-S concentration was determined by ion chromatography. Additionally, in the Ca(H-2-PO4)(2) extract the total soluble S was determined employing turbidimetry. Weak salt solutions (0.15% CaCl2, Ca(H2PO4)(2), and KH2PO4) extracted similar amounts Of SO4-S. Extraction with 0.025 M KCl provided the lowest SO4-S values. Deionized water dissolved significantly more SO4-S in the control plots than most weak salt extractants. The concentration of soluble organic S decreased in the control plots after 100 days of plant growth, indicating that the organic S pool contributed significantly to the S nutrition of the forage crops. Significant relationships among the SO4-S in the soil determined in different extracts and crop yield, sulfur content in the forage, and total sulfur uptake were only found for the Ca(H2PO4)(2) extract. In general, the correlation coefficients proved to be unsatisfactory for field experimentation.; It was the objective of this study to compare the suitability of different extractants for predicting the availability of sulfur (S) in natural grassland in a sulfur response trial on three different soil types in the Inner Mongolia steppe of China. For soil analysis, seven different extractants have been employed. The inorganic SO4-S concentration was determined by ion chromatography. Additionally, in the Ca(H-2-PO4)(2) extract the total soluble S was determined employing turbidimetry. Weak salt solutions (0.15% CaCl2, Ca(H2PO4)(2), and KH2PO4) extracted similar amounts Of SO4-S. Extraction with 0.025 M KCl provided the lowest SO4-S values. Deionized water dissolved significantly more SO4-S in the control plots than most weak salt extractants. The concentration of soluble organic S decreased in the control plots after 100 days of plant growth, indicating that the organic S pool contributed significantly to the S nutrition of the forage crops. Significant relationships among the SO4-S in the soil determined in different extracts and crop yield, sulfur content in the forage, and total sulfur uptake were only found for the Ca(H2PO4)(2) extract. In general, the correlation coefficients proved to be unsatisfactory for field experimentation.
关键词	Inner Mongolia Steppe Of China Soil Analysis Sulfur
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
学科领域	农业科学
关键词[WOS]	SOILS ; REQUIREMENT
收录类别	SCI
语种	英语
WOS研究方向	Agriculture ; Plant Sciences ; Chemistry
WOS类目	Agronomy ; Plant Sciences ; Chemistry, Analytical ; Soil Science
WOS记录号	WOS:000236669300008
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1337
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.Chinese Acad Sci, NW Inst Plateau Biol, Xining, Peoples R China 4.Chinese Acad Sci, Inst Bot, Lab Vegetat Quantitat Ecol, Beijing, Peoples R China 5.Fed Agr Res Ctr, Inst Plant Nutr & Soil Sci, Braunschweig, Germany
推荐引用方式 GB/T 7714	Cui, XY,Wang, SP,Wang, YF,et al. Suitability of extractants for predicting available sulfur in natural grassland in the Inner Mongolia steppe of China[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,2006,37(5-6):721-732.
APA	Cui, XY.,Wang, SP.,Wang, YF.,Xing, XR.,Chen, ZZ.,...&Schnug, E.(2006).Suitability of extractants for predicting available sulfur in natural grassland in the Inner Mongolia steppe of China.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,37(5-6),721-732.
MLA	Cui, XY,et al."Suitability of extractants for predicting available sulfur in natural grassland in the Inner Mongolia steppe of China".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 37.5-6(2006):721-732.