NITRATE LEACHING IN-FIELD LYSIMETERS AT AN AGRICULTURAL SITE IN ZIMBABWE

被引：16

作者：

KAMUKONDIWA, W

BERGSTROM, L

机构：

[1] Department of Biological Sciences, University of Zimbabwe, Harare, PO. Box MP 167, Mt. Pleasant

[2] Department of Soil Sciences, Swedish University of Agricultural Sciences, Uppsala, S-75007

来源：

SOIL USE AND MANAGEMENT | 1994年 / 10卷 / 03期

关键词：

D O I：

10.1111/j.1475-2743.1994.tb00471.x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Nitrate leaching in lysimeters containing a tropical sandy agricultural soil was studied over two summers with maize (Zea mays L.) and one winter season with wheat (Triticum aestivum L.). The treatments included two moisture regimes and two nitrogen sources, cattle manure and inorganic fertilizer-N (either ammonium nitrate or ammonium sulphate) applied at 100 kg N/ha in the summers. Neither manure nor fertilizer-N was applied in the intervening winter. Leachate volume from the manured lysimeters was mostly larger than from fertilized ones because of poor growth and less evapotranspiration. The largest seasonal nitrate loads (17-39 kg N/ha) were obtained in the wet summer immediately after installation of the lysimeters. Nitrate loads in winter (3.7-18.6 kg N/ha) were larger than those obtained in fertilized (0.6 and 9.3 kg N/ha) and manured (0.3 and 3.0 kg N/ha) lysimeters for the two moisture regimes in the second summer. The drier conditions in the second summer decreased N-mineralization and leaching of manure.

引用

页码：118 / 124

页数：7

共 20 条

[1]

Arora Y., Juo A.S.R., Leaching of fertilizer ions in a kaolinitic ultisol in the high rainfall tropics: leaching of nitrate in field plots under cropping and fallow, Soil Science Society of America Journal, 46, pp. 1212-1218, (1982)

[2]

Baker J.L., Johnson H.P., Nitrate‐nitrogen in tile drainage as affected by fertilization, Journal of Environmental Quality, 10, pp. 519-522, (1981)

[3]

Belford R.K., Collection and evaluation of large soil monoliths for soil and crop studies, Journal of Soil Science, 30, pp. 363-373, (1979)

[4]

Bergstrom L., Nitrate leaching and drainage from annual and perennial crops in tile‐drained plots and lysimeters, Journal of Environmental Quality, 16, pp. 11-18, (1987)

[5]

Bergstrom L., Use of lysimeters to estimate leaching of pesticides in agricultural soils, Environmental Pollution, 67, pp. 325-347, (1990)

[6]

Bergstrom L., Johansson R., Leaching of nitrate from monolith lysimeters of different types of agricultural soils, Journal of Environmental Quality, 20, pp. 801-807, (1991)

[7]

Caocett K.E., Meterlerkamp H.R.R., Evapotranspiration of maize in relation to open‐pan evaporation and crop development, Rhodesia Journal of Agricultural Research, 2, pp. 35-44, (1964)

[8]

Cassel O.K., Kreger T.H., Schroer P.W., Norum E.B., Solute movement through disturbed and undisturbed soil cores, Soil Science Society of America Proceedings, 38, pp. 36-40, (1974)

[9]

Grant P.M., The fertility of a sandveld soil under continuous cultivation. I. The effect of manure and nitrogen fertilizer on the nitrogen status of soil, Rhodesia Zambia Malawi Journal of Agricultural Research, 5, pp. 71-79, (1967)

[10]

Gustafson A., Leaching of nitrate from arable land into groundwater in Sweden, Environmental Geology, 5, pp. 65-71, (1983)

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