Phosphate sorption characteristics of major soils in Okinawa, Japan

被引:22
作者
Dodor, DE [1 ]
Oya, K [1 ]
机构
[1] Univ Ryukyus, Fac Agr, Dept Environm Sci & Technol, Okinawa 9030129, Japan
关键词
D O I
10.1080/00103620009370436
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Phosphate sorption isotherms were determined for 16 representative major soils developed from different parent materials on Okinawa. Phosphate sorption characteristics were satisfactorily described by the Langmuir equation, which was used to determine phosphorus (P) sorption maxima of the soils. Phosphate sorption maxima ranged from 630 to 2208 mg P kg(-1) soil (mean 1,362 mg P kg(-1)). The standard P requirement (i.e., the amount of P required to attain 0.2 mg P L-1 equilibrium solution) followed the same trend as sorption maximum (r =0.94***), with values ranging from 132 to 1,020 mg P kg(-1) soil(mean 615 mg P kg(-1)). This mean value corresponds to fertilizer addition of 923 kg P ha(-1) indicating that the soils have high P fertilizer requirements. Results of simple linear regression analysis indicated that sorption maximum was significantly correlated with clay content, organic matter, oxalate iron (Fe), pyrophosphate Fe, DCB aluminum (Al), oxalate Al, and pyrophosphate Al, but not with DCB Fe, pH, or available P content. The best regression model for predicting sorption maximum was the combination of clay, organic matter, pyrophosphate Fe, and DCB Al which altogether explained 79% of the variance in sorption maximum. The equation obtained could offer a rapid estimation of P sorption in Okinawan soils.
引用
收藏
页码:277 / 288
页数:12
相关论文
共 28 条
[1]   THE EFFECTS OF SOIL PROPERTIES ON THE DIFFERENTIAL PHOSPHATE SORPTION BY SEMIARID SOILS FROM NORTHEAST BRAZIL [J].
AGBENIN, JO ;
TIESSEN, H .
SOIL SCIENCE, 1994, 157 (01) :36-45
[2]  
AGBOOLA AA, 1983, 3RD INT C PHOSPH COM, P261
[3]  
FOX R L, 1970, Soil Science Society of America Proceedings, V34, P902
[4]  
Gee G. W., 1986, Methods of soil analysis. Part 1. Physical and mineralogical methods, P383
[5]  
GEODERT WJ, 1983, J SOIL SCI, V34, P405
[6]   ADSORPTION OF ORTHOPHOSPHATE TO HUMIC-FE-COMPLEXES AND TO AMORPHOUS FE-OXIDE [J].
GERKE, J ;
HERMANN, R .
ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE, 1992, 155 (03) :233-236
[7]   PHOSPHATE SORPTION CHARACTERISTICS OF SOME BENCH-MARK SOILS OF WEST-AFRICA [J].
JUO, ASR ;
FOX, RL .
SOIL SCIENCE, 1977, 124 (06) :370-376
[8]  
KOSAKA J., 1959, Soil and Plant Food, V5, P77
[9]   SORPTION OF PHOSPHORUS BY SOME SURFACE SOILS FROM QUEBEC IN RELATION TO THEIR PROPERTIES [J].
LAVERDIERE, MR ;
KARAM, A .
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 1984, 15 (10) :1215-1230
[10]   PHOSPHORUS SORPTION BY ULTISOLS AND INCEPTISOLS OF THE NIGER DELTA IN SOUTHERN NIGERIA [J].
LOGANATHAN, P ;
ISIRIMAH, NO ;
NWACHUKU, DA .
SOIL SCIENCE, 1987, 144 (05) :330-338