Decomposition and phosphorus release from organic residues as affected by residue quality and added inorganic phosphorus

被引：33

作者：

Baggie I. ^{[1
]}

Rowell D.L. ^{[2
]}

Robinson J.S. ^{[2
]}

Warren G.P. ^{[2
]}

机构：

[1] Rice Research Station, Freetown, PMB

[2] Department of Soil Science, University of Reading, Reading

来源：

Agroforestry Systems | 2005年 / 63卷 / 2期

关键词：

Fertiliser-P; P availability; Plant residue-P; Residue decomposition; Residue quality;

D O I：

10.1007/s10457-004-5131-5

中图分类号：

学科分类号：

摘要：

The combined use of organic residue and inorganic fertiliser-phosphorus (P) is appropriate in meeting both the short and long-term P requirement of crops. To assess the influence of added inorganic fertiliser-P on the processes of decomposition and P release from the residue and the relationships with quality, prunings of Gliricidia sepium, Leucaena leucocephela, Senna siamea, Acacia mangium and Paraserienthus falcataria were incubated without and with added inorganic fertiliser-P for 56 days. Soil was added only as inoculum. Decomposition rate and amounts of acid extractable-P (P release) were in the same order: G. sepium >S. siamea > L. leucocephela >P. falcataria > A. mangium. Unlike the other residues, A. mangium released no P despite the loss of half its mass during the 8 weeks of incubation. The residue P content correlated with P release. However, decomposition rate did not correlate with residue P content but with the lignin, polyphenol and cellulose content, and ratios to P. These ratios were negatively correlated with P release suggesting that lignin and polyphenol contents influence P release more when the residue-P content is low. Results suggest that rate of decomposition influences the release of P. The critical residue P content for P release was estimated to be 0.12% < P < 0.19%. Added P had no effect on decomposition and P release from the residues. © 2004 Kluwer Academic Publishers.

引用

页码：125 / 131

页数：6

共 24 条

[11]

Kuo S., Sparks D.L., Phosphorus, Methods of Soil Analysis: Chemical Methods, Part 3., pp. 869-919, (1996)

[12]

Kwabiah A.B., Voroney R.P., Palm C.A., Stoskopf N.C., Inorganic fertiliser enrichment of soil: Effect on decomposition of plant litter under subhumid tropical conditions, Biology and Fertility of Soil., 30, pp. 224-231, (1999)

[13]

Mafongoya P.L., Dzowela B.H., Nair. P.K.R., Cadisch G., Giller K.E., Effect of multipurpose trees, age of cutting and drying method on pruning quality, Driven by Nature:Plant Litter Quality and Decomposition., pp. 167-174, (1997)

[14]

McGill W.B., Cole C.V., Comparative aspects of cycling of organic C, N, S and P through soil organic matter, Geoderma., 26, pp. 267-286, (1981)

[15]

Murphy J., Riley J.P., A modified single solution method for the evaluation of phosphate in natural water, Analytica Chemica. Acta., 27, pp. 31-36, (1962)

[16]

Nair P.K.R., Agroforestry systems in the tropics, Plant Science Series., 31, (1989)

[17]

Ofori-Frimpong K., Rowell D.L., The decomposition of cocao leaves and effect on phosphorus dynamics in tropical soil, European Journal of Soil Science, 50, pp. 165-172, (1999)

[18]

Palm C.A., Contribution of agroforestry trees to nutrient requirement in intercropped plants, Agroforestry Systems, 30, pp. 105-124, (1995)

[19]

Palm C.A., Sanchez P.A., Decomposition nutrientreleasepatternsoftheleavesofthreetropicallegumes, Biotropica., 22, pp. 330-338, (1990)

[20]

Saggar S., Parfitt R.L., Salt G., Skinner M.F., Carbon and phosphorus transformations during decompositions of pine forest floor with different phosphorus status, Biology and Fertility of Soil., 27, pp. 197-204, (1998)

← 1 2 3 →