THE DISSOLUTION OF NORTH-CAROLINA PHOSPHATE ROCK IN SOME SOUTH-WESTERN AUSTRALIAN SOILS

被引：3

作者：

HUGHES, JC

GILKES, RJ

机构：

[1] Department of Agronomy, University of Natal, Pietermaritzburg, 3200

[2] Soil Science and Plant Nutrition, University of Western Australia, Nedlands, 6009, Western Australia

来源：

FERTILIZER RESEARCH | 1994年 / 38卷 / 03期

关键词：

DELTA CALCIUM TECHNIQUE; HUMIC PODZOLS; PHOSPHATE LEACHING;

D O I：

10.1007/BF00749698

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

To investigate the prospects for phosphate rock (PR) application in south-western Australia (WA), 228 soil samples were collected from the main agricultural areas and their chemical and textural properties analyzed. All the samples were incubated with North Carolina PR and the amount of PR dissolved was measured using the DELTACa technique. The amounts of PR dissolved were generally low and only 29 of the soils dissolved more than 40% of the added PR. These are located in the wettest area of WA, to the west of the 800mm isohyet. Within this area a variety of soil types were able to dissolve PR including vertisols, spodosols, alfisols, and ultisols. Of these the humic podzols and peaty sands appeared to have the best potential for PR application. It is also from some of these soil types that much P from water-soluble fertilizers is leached so that the slow release characteristics of PR fertilizers may be beneficial.

引用

页码：249 / 253

页数：5

共 25 条

[1]

Anderson D.L., Kussow W.R., Corey R.B., Phosphate rock dissolution in soil: Indications from plant growth studies, Soil Sci Soc Am J, 49, pp. 918-925, (1985)

[2]

Official Methods of Analysis, (1975)

[3]

Birch P.B., Phosphorus export from coastal plain drainage to the Peel-Harvey Estuarine system, Western Australia, Aust J Mar Freshwater Res, 33, pp. 23-33, (1982)

[4]

Bolland M.D.A., Gilkes R.J., The poor performance of rock phosphate fertilizers in Western Australia : Part 1. The crop and pasture responses, Agric Sci, 3, pp. 42-48, (1990)

[5]

Bolland M.D.A., Gilkes R.J., Rock phosphates are not effective fertilizers in Western Australian soils: a review of 100 years of research, Fert Res, 22, pp. 79-95, (1990)

[6]

Day P.R., Particle size analysis, Methods of Soil Analysis, Part 1, (1965)

[7]

Gilkes R.J., Bolland M.D.A., The poor performance of rock phosphate fertilizers in Western Australia: Part 2. The soil chemical explanations, Agric Sci, 3, pp. 44-47, (1990)

[8]

Gilkes R.J., Hughes J.C., Sodium fluoride pH of Western Australian soils as an indicator of P-sorption capacity, Aust J Soil Res, 32, pp. 755-766, (1994)

[9]

Hughes J.C., Gilkes R.J., The effect of chemical extractant on the estimation of rock phosphate dissolution, Australian Journal of Soil Research, 22, pp. 475-481, (1984)

[10]

Hughes J.C., Gilkes R.J., The effect of soil properties and level of fertilizer application on the dissolution of Sechura rock phosphate in some soils from Brazil, Colombia, Australia and Nigeria, Aust J Soil Res, 24, pp. 219-227, (1986)

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