KINETICS OF RELEASE OF NONEXCHANGEABLE POTASSIUM BY CATION-SATURATED RESINS FROM RED (ALFISOLS), BLACK (VERTISOLS) AND ALLUVIAL (INCEPTISOLS) SOILS OF INDIA

被引:47
作者
DHILLON, SK
DHILLON, KS
机构
[1] Department of Soils, Punjab Agricultural University, Ludhiana
关键词
D O I
10.1016/0016-7061(90)90034-7
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Release of K from seven benchmark soils of India representing Red (Alfisols), Black (Vertisols) and Alluvial (Inceptisols) soil groups was investigated using cation exchange resins saturated with H+, Ca2+, Na+ and NH4+. Over cumulative reaction periods ranging from 0.25 to 2467 h, efficiency of different cation-saturated resins to replace non-exchangeable K from soils was in the order: H+ > Ca2+ > Na+ > NH4+. Alluvial and Red soils released, respectively, the highest and the lowest amounts of K to H+-resin. All other resins were more effective in desorbing K from smectitic Black soils than from Alluvial soils, having restrictive interlayer space, or Red soils, containing most of K in the feldspars. From the plots of cumulative K release versus square root of time, values of surface K and internal K were calculated. Proton- and Ca2+-saturated resins desorbed more internal K from Black soils, whereas Na+ and NH4+-resins were more efficient in desorbing internal K from illitic Alluvial soils. Potassium release data could be described by first-order and parabolic rate equations. Correlation coefficient and standard error of estimates obtained from least square regression analysis showed that the parabolic diffusion equation could explain better the kinetics of K release, indicating that exchange of K was diffusion-controlled. Potassium release data also conformed to the radial diffusion equation. Diffusion coefficients were calculated for three parts of the reaction, corresponding to (1) 0.25-37, (2) 37-331 and (3) 331-2467 h, representing K release at a fast, intermediate and slow rate, respectively. Diffusion coefficients with different resins were in the same sequence as observed for cumulative amounts of K released.
引用
收藏
页码:283 / 300
页数:18
相关论文
共 33 条
[1]   RELEASE OF NON-EXCHANGEABLE POTASSIUM FROM CERTAIN SOILS OF NORTHERN GREECE [J].
ARGYRIADIS, GA ;
JANNAKOUDAKIS, DA ;
POLYZOPOULOS, NA .
GEODERMA, 1978, 20 (02) :159-168
[2]   POTASSIUM UPTAKE BY CATION-EXCHANGE RESINS FROM SOILS AND MINERALS [J].
ARNOLD, PW .
NATURE, 1958, 182 (4649) :1594-1595
[3]  
ARVIEU J. C., 1964, Annales Agronomiques, V15, P207
[4]  
BHANGU SS, 1986, THESIS PUNJAB AGR U
[5]  
BOLT G. H., 1963, SOIL SCI SOC AMER PROC, V27, P294
[6]   DIFFUSION OF POTASSIUM FROM MICA-LIKE CLAY MINERALS [J].
CHUTE, JH ;
QUIRK, JP .
NATURE, 1967, 213 (5081) :1156-&
[7]   RELEASE OF POTASSIUM FROM SOME BENCHMARK SOILS OF INDIA [J].
DHILLON, SK ;
SIDHU, PS ;
BANSAL, RC .
JOURNAL OF SOIL SCIENCE, 1989, 40 (04) :783-797
[8]  
Fanning D. S., 1977, Minerals in Soil Environments (Dixon, J.B.
[9]  
Weed, S.B., Editors)., P195
[10]   RELEASE RATE OF POTASSIUM AND STRUCTURAL CATIONS FROM MICAS TO ION-EXCHANGERS IN DILUTE-SOLUTIONS [J].
FEIGENBAUM, S ;
EDELSTEIN, R ;
SHAINBERG, I .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1981, 45 (03) :501-506