POTENTIAL FOR NITRATE-N LOSS IN CENTRAL ALBERTA SOILS

被引：9

作者：

MALHI, SS

NYBORG, M

SOLBERG, ED

机构：

[1] Research Station, Agriculture Canada, Lacombe, TOC 1SO, Alberta

[2] Department of Soil Science, University of Alberta, Edmonton, T6G 2E3, Alberta

[3] Soils Branch, Alberta Agriculture, Edmonton, T6H 5H6, Alberta

来源：

FERTILIZER RESEARCH | 1990年 / 25卷 / 03期

关键词：

DENITRIFICATION POTENTIAL; NITRATE-N LOSS; SOIL DEPTH; SOIL TYPE; TILLAGE-STRAW TREATMENT;

D O I：

10.1007/BF01161397

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Incubation experiments were conducted to determine the influence of soil type, soil depth and tillage-straw treatment on the capacity for NO3-N loss under anaerobic incubation. In Experiment 1 with 14 cultivated surface soil samples, there were substantial NO3-N losses in all soils regardless of the total organic carbon content. The total organic content of these soils ranged from 21 to 55 g C kg-1. Experiment 2 showed that the rate of NO3-N loss decreased with depth of soil, but when glucose was added the rate of NO3-N loss increased markedly and all of the added NO3-N disappeared within less than a week. In Experiment 3, the soil under zero tillage where straw was retained gave slightly higher rate of NO3-N loss than the soil from conventional tillage treatment.

引用

页码：175 / 178

页数：4

共 12 条

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[7] Cho C.M., Sakdinan L., Chang C., Denitrification Intensity and Capacity of Three Irrigated Alberta Soils1, Soil Science Society of America Journal, 43, pp. 945-950, (1979)
[8] Gould W.D., McCready R.G.L., Can J Soil Sci, 62, pp. 333-342, (1982)
[9] Malhi S.S., Nyborg M., Soil Biol Biochem, 11, pp. 439-441, (1979)
[10] Malhi S.S., Nyborg M., Field Study of the Fate of Fall-Applied 15N-Labelled Fertilizers in Three Alberta Soils1, Agronomy Journal, 75, pp. 71-74, (1983)

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