水苔介質物性及其水份變化的量測

Measurement on Physical Properties and Moisture Change for Sphagnum Moss

黃婉綸(Wan-Lun Huang)

指導教授 ： 謝清祿

國立屏東科技大學/工學院/生物機電工程系所/碩士(2008年)

https://doi.org/10.6346/NPUST.2008.00268

摘要

本研究使用商用介質含水率感測器經校正後，用於水苔含水率的量測，並探討水苔內水份的變動。實驗採用市售之紐西蘭、智利、中國水苔做為實驗材料，做水草的物理性質探討。在不同灌溉情況下，潮溼的介質只會受蒸散、重力作用而造成水份的大幅變動，以此觀念本實驗設置了兩組樣本。1.潮溼樣本放置於大氣中，2.將潮溼樣本密封，量測樣本不同深度(2、4、6、12公分)的水份變化，以推測出單位時間內水份表面蒸散情況。實驗結果顯示在智利水苔在本研究所設置的條件下具有較高的空氣孔隙率及吸水比。並取智利水苔做水份變動的探討，其結果量測結果顯示介質受重力作用造成水份往下流動，再以理論推導得知介質表面的蒸散量為7.03×10-7(體積含水率/每分鐘)。

關鍵字

水苔 ； 蒸發 ； 含水率感測器

並列摘要

Because medium water content sensors sold on the market all use the soil as the measurement target, this study calibrates such commercially available instruments to make them appropriate for measurement of sphagnum moss. It also conducts physical comparisons of sphagnum moss from three countries, to provide a reference for growers. It also explores the flow of water within sphagnum moss. Not to give in irrigation circumstances, the media will only be damp evapotranspiration, the gravity of the water caused significant changes to the concept of the experimental set up two groups of samples. 1. Samples placed on the humid atmosphere, 2. Volume of samples will be wet and test samples at different depths (2cm, 4cm, 6cm, 12cm) of the water changes to the unit time to speculate the surface evaporation of water.The results show that in Chile sphagnum in the Institute set up under the conditions of a better water-retention capacity. Sphagnum from Chile and do changes of water, and the results of the test results showed that medium gravity caused by water flow down, and then to the surface of the medium that is derived evapotranspiration to 0.68 × 10-7 (volume of water cut Rate / per minute).

並列關鍵字

Sphagnum moss ； evaporate ； moisture sensors

參考文獻

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