A METHOD FOR DETERMINING PHOSPHATE DIFFUSION-COEFFICIENTS BY BULK DIFFUSION IN SOIL

被引：6

作者：

KASELOWSKY, J ^{[1
]}

BHADORIA, PBS ^{[1
]}

CLAASSEN, N ^{[1
]}

JUNGK, A ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,KHARAGPUR 721302,W BENGAL,INDIA

来源：

ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE | 1990年 / 153卷 / 02期

关键词：

D O I：

10.1002/jpln.19901530206

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A method is described for the determination of phosphate diffusion coefficients by bulk diffusion in soil using the concentration distance method. Two soil blocks only differing in phosphate concentration are brought into contact. After a diffusion period of two weeks the soil blocks are separated, frozen in liquid nitrogen and sliced into layers about 0.02 cm thick by means of a refrigerated microtome. The soil samples are extracted with 4 N HCl, a procedure which fully recovers the added amount of fertilizer P and thus includes the total amount of P that diffuses from one soil block to the other. A concentration distance profile for P and a calculation of the P diffusion coefficient is presented. Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：89 / 91

页数：3

共 20 条

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