APPLICABILITY OF SELECTED METHODS OF ESTIMATING HYDRAULIC-PROPERTIES OF A TROPICAL SOIL

被引：1

作者：

IDIKE, FI

EJIEJI, CJ

机构：

来源：

SOIL TECHNOLOGY | 1993年 / 6卷 / 04期

关键词：

D O I：

10.1016/0933-3630(93)90020-F

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Gupta & Larson (1979) regression equation for estimating soil moisture characteristics, the Campbell (1974) equation for evaluating conductivity-moisture suction at the wetting front were all applied to a largely predominant local soil in Nigeria. While the former method is not applicable in its present form to the Nigerian soil studied, the results of the latter compared favourably with laboratory determined values. The Kutilek's (1980) simple held method for estimating soil water diffusivity was also experimentally evaluated on the same soil and the result compared to that obtained from the widely acknowledged Arya et al. (1975) laboratory method. The comparison showed that Kutilek's field method did not yield satisfactory results due to the unreliability of the techniques for obtaining the soil parameters required in practical application of the method.

引用

页码：299 / 309

页数：11

共 14 条

[1]

Arya, Blake, Farrel, A Field Study of Soil Water Depletion Patterns in Presence of Growing Soybean Roots: I. Determination of Hydraulic Properties of the Soil1, Soil Science Society of America Journal, pp. 424-438, (1975)

[2]

Campbell, A SIMPLE METHOD FOR DETERMINING UNSATURATED CONDUCTIVITY FROM MOISTURE RETENTION DATA, Soil Science, 117, 6, pp. 311-314, (1974)

[3]

Clothier, White, Measurement of Sorptivity and Soil Water Diffusivity in the Field, Soil Sci. Soc. Am. J., 45, pp. 241-245, (1981)

[4]

Ehlers, Rapid Determination of Unsaturated Conductivity in Tilled and Untilled Loss Soil, Soil Sci. Soc. Am. J., 40, pp. 837-840, (1976)

[5]

Ejieji, Test of the Applicatibility of Selected Methods for Determining Soil Hydraulic Properties in Nsukka Area, (1983)

[6]

Gosh, NOTE DETERMINATION OF UNSATURATED HYDRAULIC CONDUCTIVITY FROM MOISTURE RETENTION FUNCTION, Soil Science, 124, pp. 122-124, (1977)

[7]

Gupta, Larson, Estimating Soil Water Retention Characteristics from Particle Size Distribution, Organic Matter Percent and Bulk Density, Water Resour. Res., 15, 6, pp. 1633-1635, (1979)

[8]

Idike, Experimental Evaluation of Infiltration Equations, (1977)

[9]

Idike, Modelling the Effects of Conservation Practices on Soil Moisture, (1981)

[10]

Kutilek, Approximate Field Determination of Diffusivity and Unsaturated Hydraulic Conductivity, Proc. 2nd International Conf. on Agro Physics, (1980)

← 1 2 →