利用竹子製作無土栽培介質之可行性探討

Preparation of Soilless Culture Medium by Manufactured Bamboo Fiber

陳沛宇(P. Y. Chen) ； 張志鵬(C. P. Chang)

《華岡紡織期刊》 22卷1期 (2015/03) Pp. 31-36

摘要

本研究係將竹子屑與不同發泡劑混合，以微波加熱製成，選出使栽培介質成型最佳之發泡劑，再以海藻酸鈉改善栽培介質之性質，探討添加不同濃度之海藻酸鈉，對栽培介質之含水率、保水率、pH 值及EC 值之影響。實驗結果顯示，使用發泡劑SR-T4 的樣本成型效果最好。添加不同濃度海藻酸鈉之栽培介質，其含水率較未添加者明顯增加，其中，添加4wt%海藻酸鈉之栽培介質，有179wt%之最高含水率。竹子栽培介質之pH 值為5.6~6.2，符合一般植物的最佳生長環境，添加5wt%海藻酸鈉之栽培介質，EC 值最高達3.5mS/cm，不符合植物生長環境2mS/cm，其餘添加海藻酸鈉之栽培介質皆達到此標準，由此可知，本實驗成功製備出適合一般植物栽種且性質良好之竹子無土栽培介質。

關鍵字

微波加熱 ； 發泡劑SR-T4 ； 海藻酸鈉 ； 無土栽培介質 ； 竹子屑

並列摘要

In this study, we try five different blowing agents, and then add bamboo scrap. Prepared via microwave heating, and elected to make the best of foaming molding samples. The best re-use of sodium alginate to improve the properties of the sample. We study adding different concentrations of sodium alginate, how to impact moisture content, water retention, pH and EC values of bamboo cultivation medium. Experimental results show that the blowing agent SR-T4 samples forming effect is the best, after adding different concentrations of sodium alginate found that adding sodium alginate sample moisture content were significantly increased compared with those who did not add. Among them, add the sample moisture content of 4wt% sodium alginate 179wt% of the maximum. Bamboo cultivation medium pH range of between 5.6 to 6.2, the best growing conditions in general plant. Except for adding a sample of 5wt% sodium alginate, and the rest of the EC values were in the range suitable for plant growth 2mS/cm below. According to experiments, we successfully prepared plants suitable for planting in general, and has good properties of bamboo soilless culture medium.

並列關鍵字

microwave heating ； SR-T4 ； sodium alginate ； soilless culture medium ； bamboo scrap