Effect of covering in layers of film mulch on soil temperature.
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Accession number;00A0428638
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| Title;Effect of covering in layers of film mulch on soil temperature. |
| Author;
SEO RIE
(Fac. of Agric., Kagawa Univ.)
DUANGPAENG A
(Fac. of Agric., Kagawa Univ.)
SUZUKI HARUO
(Fac. of Agric., Kagawa Univ.)
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Journal Title;Technical Bulletin of Faculty of Agriculture, Kagawa University
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Journal Code:G0765A
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ISSN:0368-5128
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VOL.52;NO.;PAGE.19-26(2000)
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| Figure&Table&Reference;FIG.6, TBL.3, REF.7 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The effects of covering in layers of film mulch on soil temperature were studied in relation to meteorological conditions. Fourteen experimental plots were prepared with a mulch materials as a covering layer either with or without plants. The mulching material used was either black polyethylene film or a transparent film. Soybeans were used for test plants. l. Albedo and surface temperature were different according to the kind of film and to the absence or presence of plants in each plot, but these differences did not appear to correlate with the number of films. 2. Ten measurement points of the soil temperature were prepared at a depth of 10 cm in each plot. The order of the mean soil temperatures for 10 points was transparent> black> no mulch. In the plots with transparent film, the rise in soil temperature was large, but the temperature dropped with increases in the number of films. 3. The frequencies of the order of high- low soil temperature between two plots were calculated. The standard deviations for 10 soil temperatures at 6:00 beneath black PE with plants were small with increases in the number of films, which showed that the stability of the soil temperature increased with additional layers of film mulch. The deviations in temperature increased, however, with increases in the layers of transparent PE. 4. Distributions of soil temperature difference at a depth of 10 cm were compared between two plots during the experimental periods. Beneath black PE with one sheet of film, the distributions were normal with one peak. The distributions were not normal, however, for temperatures beneath the transparent PE. There were two peaks, whereas other plots have one peak. (author abst.) |
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