Spatial variation in soil phosphomonoesterase in irrigated and dry farmlands
Tóm tắt
Spatial variation in the content of acid and alkaline phosphatase was surveyed on two farmlands. Two adjacent plots, one irrigated and cultivated and the other nonirrigated and cultivated, were marked on a 300-m-long transect with 10-m spacing. Soil samples were collected at the depths of 0–30 and 30–60 cm and were then analyzed for acid and alkaline phosphatase and other soil parameters. The analytical results were then subjected to classical statistical and geostatistical analysis. The results showed that the correlation coefficients of the phosphatase and clay, the silt, the sand, the mean weight diameter, the geometric mean diameter, the equivalent CaCO3, the pH, the electrical conductivity, the organic carbon, the respiration, the Olsen available phosphorus, and the vesicular arbuscular mycorrhizae (VAM) spore numbers of the soils in the transect studied were highly significant. In both layers of the irrigated farmland, the coefficients of the variation of the acid phosphatase were relatively high and the coefficients of the variation of the alkaline phosphatase were relatively low compared to those of the dry farmland. Although the acid and alkaline phosphatase in the topsoil and subsoil of the farmlands exhibited a spatial dependence at the sampled scale, the stability of the spatial structures were markedly low.
Tài liệu tham khảo
K. Alef and P. Nannipieri, Methods in Applied Soil Microbiology and Biochemistry (Academic, London, 1995).
J. A. Amador, A. M. Glucksman, J. B. Lyons, and J. H. Gaorres, “Spatial Distribution of Soil Phosphatase Activity within a Riparian Forest,” Soil Sci. 162, 808–825 (1997).
M. A. Aon, M. N. Cabello, D. E. Sarena, et al., “Spatio-Temporal Patterns of Soil Microbial and Enzymatic Activities in an Agricultural Soil,” Appl. Soil Ecol. 18, 239–254 (2001).
M. A. Aon and A. C. Colaneri, “Temporal and Spatial Evolution of Enzymatic Activities and Physicochemical Properties in an Agricultural Soil,” Appl. Soil Ecol. 18, 255–270 (2001).
D. W. Bergstrom, C. M. Monreal, and D. J. King, “Sensitivity of Soil Enzyme Activities to Conservation Practices,” Soil Sci. Soc. Am. J. 62, 1286–1295 (1998).
R. E. J. Boerner, B. G. DeMars, and P. N. Leicht, “Spatial Patterns of Mycorrhizal Infectiveness of Soils along a Successional Chronosequence,” Mycorrhiza 6, 79–90 (1996).
M. D. Cahn, J. W. Hummel, and B. H. Brouer, “Spatial Analysis of Soil Fertility for Site-Specific Crop Management,” Soil Sci. Soc. Am. J. 58, 1240–1248 (1994).
C. A. Cambardella, T. B. Moorman, J. M. Novak, et al., “The Effect of Cultivation on the Properties of a Rhodoxeralf from the Wheat-Sheep Belt of New South Wales,” Geoderma 63, 215–225 (1994).
R. P. Dick, “A Review: Long-Term Effects of Agricultural Systems on Soil Biochemical and Microbial Parameters,” Agric. Ecosyst. Environ. 40, 25–36 (1992).
J. W. Doran and T. B. Parkin, “Quantitative Indicators of Soil Quality: a Minimum Data Set,” in Methods for Assessing Soil Quality, Ed. by J. W. Doran and A. J. Jones (Madison, WI, 1996), SSSA Special Publ. No. 49, pp. 25–37.
F. Eivazi and M. A. Tabatabai, “Phosphatase in Soils,” Soil Biol. Biochem. 9, 167–172 (1977).
W. T. Frankenberger Jr. and W. A. Dick, “Relationships between Enzyme Activities and Microbial Growth and Activity Indices in Soil,” Soil Sci. Soc. Am. J. 47, 945–951 (1983).
G. W. Gee and J. W. Bauder, “Particle-Size Analysis,” in Method of Soil Analysis, Part 1. Physical and Mineralogical Methods, Ed. by A. Klute (Soil Sci. Soc. Am., Madison, WI, 1986), pp. 384–411.
J. W. Gerdmann and T. H. Nicolson, “Spores of Mycorrhizal Endogone Species Extracted by Wet Sieving and Decanting,” Trans. Brit. Mycol. Soc. 46, 235–244 (1963).
P. R. Hesse, A Text Book of Soil Chemical Analysis (Murray, London, 1971).
M. L. Jackson, Soil Chemical Analysis (Prentice Hall, Englewood, NJ, 1958).
W. R. Jenkins, “A Rapid Centrifugal-Floatation Technique for Separating Nematodes from Soil,” Plant Dis. Rep. 73, 288–300 (1964).
E. J. Joner and I. Jakobsen, “Growth and Extracellular Phosphatase Activity of Arbuscular Mycorrhizal Hyphae as Influenced by Soil Organic Matter,” Soil Biol. Biochem. 27, 1153–1159 (1995).
E. J. Joner, J. Magid, T. S. Gahoonia, and I. Jakobsen, “Depletion and Activity of Phosphatase in the Rhizosphere of Mycorrhizal and Nonmycorrhizal Cucumber (Cucumis sativus),” Soil Biol. Biochem. 27, pp. 1145–1151 (1995).
T. M. Klein and J. S. Koths, “Urease, Protease, and Phosphatase in Soil Continuously Cropped to Corn by Conventional or No-Tillage Methods,” Soil Biol. Biochem. 12, 293–294 (1980).
J. N. Klironomos, M. C. Rillig, and M. F. Alien, “Designing Below-Ground Field Experiments with the Help of Semi-Variance and Power Analyses,” Appl. Soil Ecol. 12, 227–238 (1999).
Methods of Soil Analysis, Part 1. Physical and Mineralogical Methods, 3rd ed., Ed. by A. Klute (Soil Sci. Soc. Am., Madison, WI, 1990).
J. B. Lyons, J. H. Gaorres, and J. A. Amador, “Spatial and Temporal Variability of Phosphorus Retention in a Riparian Forest Soil,” J. Environ. Qual. 27, 895–903 (1998).
A. B. McBratney and M. J. Pringle, “Estimating Average and Proportional Variograms of Soil Properties and Their Potential Use in Precision Agriculture,” Precis. Agric. 1, 219–236 (1999).
A. L. Page, R. H. Miller, and D. R. Keeney, Method of Soil Analysis, Part 2: Chemical and Microbiological Properties, 2nd ed., Soil Sci. Soc. Am., Madison, WI, 1992).
W. R. Raun, J. B. Solie, G. V. Johnson, et al., “Microvariability in Soil Test, Plant Nutrient, and Yield Parameters in Bermuda Grass,” Soil Sci. Soc. Am. J. 62, 683–690 (1998).
G. P. Robertson and D. W. Freckman, “The Spatial Distribution of Nematode Trophic Groups across a Cultivated Ecosystem,” Ecology 76, 1425–1432 (1995).
G. P. Robertson, K. M. Klingensmith, M. J. Klug, et al., “Soil Resources, Microbial Activity, and Primary Production across an Agricultural Ecosystem,” Ecol. Appl. 7, 158–170 (1997).
D. M. Sylvia, “Vesicular-Arbuscular Mycorrhizal Fungi,” in Methods of Soil Analysis, Part 2. Microbiological and Biochemical Properties, SSSA Book Series, No. 5, (Madison, WI, 1994), pp. 351–378.
M. A. Tabatabai, “Soil Enzymes,” in Methods of Soil Analysis, Part 2. Microbiological and Biochemical Properties, (Madison, WI, 1994), SSSA Book Series, No. 5, pp. 775–833.
M. A. Tabatabai and W. A. Dick, “Enzymes in Soil: Research and Developments in Measuring Activities,” in Enzymes in the Environment, Ed. by R.G. Burns and R.P. Dick (Dekker, New York, 2002), pp. 567–596.
J. P. Taylor, B. Wilson, M. S. Mills, and R. G. Burns, “Comparison of Microbial Numbers and Enzymatic Activities in Surface Soils and Subsoils Using Various Techniques,” Soil Biol. Biochem. 34, 387–401 (2002).
C. H. M. Van Bavel, “Mean Weight Diameter of Soil Aggregates as a Statistical Index of Aggregation,” Soil Sci. Soc. Am. J. 14, 20–23 (1949).
A. Walkley and I. A. Black, “An Examination of the Degtareff Method for Determining Soil Organic Matter, and a Proposed Modification of the Chromic Acid Titration Method,” Soil Sci. 37, 29–38 (1934).
A. G. Wollum II and O. K. Cassel, “Spatial Variability of Rhizobium japonicum in Two North Carolina Soils,” Soil Sci. Soc. Am. J. 48, 1082–1086 (1984).