Comparison of methodologies for field measurement of net nitrogen mineralisation in arable soils

被引：43

作者：

Bhogal A. ^{[1
]}

Hatch D.J. ^{[2
]}

Shepherd M.A. ^{[1
]}

Jarvis S.C. ^{[2
]}

机构：

[1] ADAS Research Centre Gleadthorpe, Notts. NG20 9PF, Meden Vale Mansfield

[2] Inst. of Grass. and Environ. Res., Okehampton, Devon EX20 2DG, North Wyke

来源：

Plant and Soil | 1999年 / 207卷 / 1期

关键词：

Anion exchange resins; In situ techniques; Net nitrogen mineralisation; Nitrogen balance;

D O I：

10.1023/A:1004420602776

中图分类号：

学科分类号：

摘要：

This study evaluated the suitability of a soil core incubation technique (with acetylene added to inhibit loss of N by denitrification; CIT) and a resin-core incubation technique (RCT) for measurement of net N mineralisation under arable cropping conditions. A conventional N balance (BAL) approach to the measurement of N mineralisation was used for comparison. In a sandy soil during winter 1996/97, CIT estimates of net N mineralisation were approximately 3 times greater than RCT and BAL estimates, which were in close agreement. Soil disturbance (with the consequent exposure of physically protected organic matter) did not enhance the rate of net N mineralisation measured by CIT on the sandy, low-organic-matter soil studied, although an increase in soil aeration may have enhanced rates above those measured by RCT and BAL. Overall, RCT was considered to be the more favourable technique for estimation of net N mineralisation. It also provided a measure of nitrate leaching which was comparable to that obtained by porous ceramic water samplers. However, separate estimates of the likely loss of N by denitrification should be obtained with soils which are particularly vulnerable (eg. poor aeration and high clay or water content). Spatial variability was a particular problem with all three techniques which can be overcome by taking a large number of soil cores to increase sample replication.

引用

页码：15 / 28

页数：13

共 41 条

[11]

Eno C.F., Nitrate production in the field by incubating the soil in polythene bags, Soil Sci. Soc. Am. Proc., 24, pp. 277-279, (1960)

[12]

Goovaerts P., Chiang C.N., Temporal persistence of spatial patterns for mineralisable nitrogen and selected soil properties, Soil Sci. Soc. Am. J., 57, pp. 372-381, (1993)

[13]

Hart S.C., Firestone M.K., Evaluation of three in situ soil nitrogen availability assays, Can. J. For. Res., 19, pp. 185-191, (1989)

[14]

Hassink J., Effects of soil texture and structure on carbon and nitrogen mineralisation in grassland soils, Biol. Fert. Soils, 14, pp. 126-134, (1992)

[15]

Hatch D.J., Jarvis S.C., Philipps L., Field measurement of nitrogen mineralisation using soil core incubation and acetylene inhibition of nitrification, Plant Soil, 124, pp. 97-107, (1990)

[16]

Hatch D.J., Jarvis S.C., Reynolds S.E., An assessment of the contribution of net mineralisation to N cycling in grass swards using a field incubation method, Plant Soil, 138, pp. 23-32, (1991)

[17]

Hatch D.J., Jarvis S.C., Rook A.J., Bristow A.W., Ionic contents of leachate from grassland soils: A comparison between ceramic suction cup samples and drainage, Soil Use Man., 13, pp. 68-74, (1997)

[18]

Hatch D.J., Jarvis S.C., Parkinson R.J., Concurrent measurements of net mineralisation, nitrification, denitrification and leaching from field incubated soil cores, Biol. Fert. Soils, 26, pp. 323-330, (1998)

[19]

Hutsch B.W., Russell P., Mengel K., CH<sub>4</sub> oxidation in two temperate arable soils as affected by nitrate and ammonium application, Biol. Fert. Soils, 23, pp. 86-92, (1996)

[20]

Jensen L.S., McQueen D.J., Shepherd T.G., Effects of soil compaction on N-mineralisation and microbial-C and -N. I. Field measurements, Soil Till. Res., 38, pp. 175-188, (1996)

← 1 2 3 4 5 →