DIFFUSION, ADSORPTION, AND PREDICTED LONGEVITY OF BANDED PHOSPHORUS-FERTILIZER IN 3 SOILS

被引:57
作者
EGHBALL, B [1 ]
SANDER, DH [1 ]
SKOPP, J [1 ]
机构
[1] UNIV NEBRASKA,DEPT AGRON,LINCOLN,NE 68588
关键词
D O I
10.2136/sssaj1990.03615995005400040041x
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
An experiment was conducted to determine the extent of P diffusion from banded P application, diffusion coefficients, and the longevity of banded P fertilizer. Six P rates of 15, 22.5, 30, 37.5, 45, and 60 kg P ha-1 tagged with 32P were applied in a band in three soils and allowed to diffuse under field conditions for 94 d. The diffusion distances and apparent diffusion coefficients increased in a linear manner as the P application rate increased. Soil sampling and soil-test P calibration should be altered to account for the residual nature of applied P bands. -from Authors
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页码:1161 / 1165
页数:5
相关论文
共 14 条
[1]  
Barber S. A., 1984, SOIL NUTRIENT BIOAVA
[2]   MECHANISMS FOR MOVEMENT OF PLANT NUTRIENTS FROM SOIL AND FERTILIZER TO PLANT ROOT [J].
BARBER, SA ;
WALKER, JM ;
VASEY, EH .
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1963, 11 (03) :204-&
[3]  
Crank J., 1979, MATH DIFFUSION, V2nd
[4]   DISTANCE AND DISTRIBUTION EFFECTS OF PHOSPHORUS-FERTILIZER ON CORN [J].
EGHBALL, B ;
SANDER, DH .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1989, 53 (01) :282-287
[5]   OBSERVED AND PREDICTED RATES OF PHOSPHORUS DIFFUSION IN SOILS OF VARYING BULK-DENSITY AND WATER-CONTENT [J].
HIRA, GS ;
SINGH, NT .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1977, 41 (03) :537-540
[6]   EFFECT OF PHOSPHATE APPLICATIONS ON DIFFUSION-COEFFICIENTS AND AVAILABLE PHOSPHATE IN AN ACID SOIL [J].
KUNISHI, HM ;
TAYLOR, AW .
JOURNAL OF SOIL SCIENCE, 1975, 26 (03) :267-277
[7]  
LEHR JAMES R., 1959, SOIL SCI SOC AMER PROC, V23, P3
[8]   PHOSPHATE DIFFUSION IN SOIL AND UPTAKE BY PLANTS .4. COMPUTED UPTAKE BY MODEL ROOTS AS A RESULT OF DIFFUSIVE FLOW [J].
LEWIS, DG ;
QUIRK, JP .
PLANT AND SOIL, 1967, 26 (03) :454-&
[9]  
MAHTAB SK, 1971, SOIL SCI SOC AM J, V235, P393
[10]  
SANDER DH, 1990, IN PRESS SOIL SCI SO, V54