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陶坛渗灌是一种古老的节水灌溉技术 ,本项研究说明这项技术的特征包括如下内容 :( 1)陶坛的储水量为 10kg。 ( 2 )空气介质中 ,陶坛的渗水量随时间的变化呈现直线下降。陶坛的渗水速率室外比室内约大 1 2。不论是室内还是室外 ,白天的渗水量大于晚上 ,约大 1 4。 ( 3 )凤沙土介质中 ,陶坛的渗水量随时间的变化呈现二次曲线下降 ;陶坛湿润的范围 ,横剖面大约在坛壁周围以陶坛直径所决定的环形区域内 ,纵剖面范围与陶坛的形状类似 ,略呈圆方形。 ( 4 )凤沙土介质中陶坛的渗水量大于空气介质中陶坛的渗水量。 ( 5 )陶坛的渗水速率随土壤含水量的增加而变小 ,与陶坛的密度、厚度等物理常数不相关 ,是否与制作陶坛的材料有关还需进一步研究
Pottery seepage irrigation is an ancient water-saving irrigation technology, this study shows that the characteristics of this technology include the following: (1) Tao Tan’s water storage capacity of 10kg. (2) In the air medium, the seepage amount of the ceramic altar shows a straight line decline with time. Ceramic altar water seepage rate is about 1 2 outdoor than indoors. Whether indoor or outdoor, the amount of water seepage during the day than at night, about 14 large. (3) In the bast sand media, the seepage volume of the ceramic altar showed a quadratic curve change with time. The wetting range of the ceramic altar was approximately in the annular region determined by the diameter of the pottery altar around the altar wall, Similar to the shape of the pottery altar, slightly rounded. (4) Baptist sand medium in the altar seepage of water is greater than the volume of water seepage in the altar in the air medium. (5) The seepage rate of ceramic altar becomes smaller with the increase of soil water content, it is not related to the physical constants such as the density and thickness of ceramic altar, but whether it is related to the material of ceramic altar needs further study