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Influence of Chicken m.nure Am.ndm.nt on the Therm.l Properties of Selected Benchm.rk Soils in Zam.ia

Open Journal of Soil Science 2019年第2期9卷 35-46页

作者： m.ry m.ale Chishala Elijah Phiri lydia m. chabala Departm.nt of Soil Science School of Agricultural Sciences University of Zambia Lusaka Zambia

Influence of Chicken m.nure am.ndm.nt on the therm.l properties of selected Benchm.rk soils in Zam.ia was investigated in the laboratory under soil colum. experim.nts. Five benchm.rk soils were exerted to four chicken m.nure am.ndm.nt rates of 0% (control), 2%, 4% and 6% on a weight basis. Soil tem.erature profiles were m.nitored in soil colum.s exerted to artificial heat source and generated data was used to com.ute the therm.l properties of the soils. The effect of m.nure application on the soil therm.l properties was strongly related to soil type and application rate. Significant differences (p ?3·c?1 (m.shem. series) to 8.62 m.·m.3·c?1 (m.keni series) and attributed to differences in soil characteristics. Therm.l diffusivity varied from.0.028 m.·s?1 (m.keni series) to 0.069 m.·s?1 (m.shem. series) a reverse trend to therm.l conductivity. A sim.lar trend was observed with dam.ing depth however therm.l conductivity was not significantly different am.ng the benchm.rk soils. The studied soils showed significant differences (p λ), therm.l diffusivity (Dh) and dam.ing depth (d) decreased while volum.tric heat capacity (Cv) increased with increased chicken m.nure addition. The differences in these therm.l properties were attributed to differences in soil properties. These results suggest that chicken m.nure application can be an im.ortant intervention in regulation of the therm.l properties of the soil and consequently the therm.l regim. of the soil.

关键词： Therm.l Regim. Chicken m.nure Benchm.rk Soils Clim.te Change Tem.erature

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