THE RETENTION OF NITRATE IN ACID SOILS FROM THE TROPICS

被引：25

作者：

WONG, MTF

HUGHES, R

ROWELL, DL

机构：

[1] Department of Soil Science, University of Reading, Reading, RG1 5AQ, London Road

来源：

SOIL USE AND MANAGEMENT | 1990年 / 6卷 / 02期

关键词：

D O I：

10.1111/j.1475-2743.1990.tb00805.x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Abstract. In most soils of temperate regions nitrate is not held on soil surfaces and moves freely in solution. But when soils carry positive charges, nitrate is held as an exchangeable anion. As a result, leaching of nitrate is delayed relative to the movement of water. The delay can be predicted provided the anion exchange capacity (AEC) can be measured and the concentration of counter‐anions is known. For soils with variable charge, the AEC varies with both pH and ionic strength, and the effective AEC should be determined under conditions similar to those in soil solution. A simple leaching method is described which satisfies this requirement. Delays in the leaching of nitrate measured in columns of repacked soil were strongly related to the AEC. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：72 / 74

页数：3

共 16 条

[1]

Black A.S., Waring S.A., Adsorption of nitrate, chloride and sulphate by some highly weathered soils from South‐east Queensland, Australian Journal of Soil Research, 17, pp. 271-282, (1979)

[2]

Chabalier P.F., Utilisation de lengrais par les cultures et pertes par lixivation dans deux agrosystemes de Cote d'lvoire, Nitrogen Cycling in West African Ecosystems, pp. 393-398, (1980)

[3]

Elston J., Dennett M.D., Climates of the tropics in relation to crop productivity, Characterization of Soils, pp. 262-277, (1981)

[4]

Kinjo T., Pratt P.F., Nitrate adsorption: 1. In some acid soils of Mexico and South America, Soil Science Society of America Journal, 35, pp. 722-725, (1971)

[5]

Leon L.A., Pratt P.F., Efectos agronomicos de la retencion y lixiviacion de nitratos en dos Andepts de Colombia, Turrialba, 24, pp. 408-413, (1974)

[6]

Mueller-Harvey I., Juo A.S.R., Wild A., Soil organic C, N, S and P after forest clearance in Nigeria: mineralisation rates and spatial variability, Journal of Soil Science, 36, pp. 585-591, (1985)

[7]

Singh B.R., Kanehiro Y., Adsorption of nitrate in amorphous and kaolinitic Hawaiian soils, Soil Science Society of America Journal, 33, pp. 681-683, (1969)

[8]

Talsma T., Mansell R.S., Hallam P.M., Potassium and chloride movement in a forest soil under simulated rainfall, Australian Journal of Soil Research, 18, pp. 333-342, (1980)

[9]

Toner C.V., Sparks D.L., Carski T.H., Anion exchange chemistry of middle Atlantic soils: charge properties and nitrate retention kinetics, Soil Science Society of America Journal, 53, pp. 1061-1067, (1989)

[10]

Uehara G., Gillman G.P., Charge Characteristics of soils with variable and permanent charge minerals: 1. Theory, Soil Science Society of America Journal, 44, pp. 250-252, (1980)

← 1 2 →