聖誕紅栽培介質pH值適宜性研究

Study on Optimum pH Value of Growth Media for Potted Poinsettia

羅秋雄(Chiu-Shyoung Lo) ； 王斐能(Fei-Neny Wang)

《桃園區農業改良場研究彙報》 55期 (2004/06) Pp. 36-41

https://doi.org/10.29567/ZHWHGX.200406.0004

摘要

本研究自2003年至2004年於桃園縣新屋鄉進行，主要目的在評估聖誕紅栽培介質適宜的pH值，供為調配介質之依據。以堆肥（牛糞：粉碎榖殼：金針菇木屑＝1：2：2（v/v/v）混合堆積腐熟）：河砂：珍珠石＝2：1：1（v/v/v）混拌為栽培介質。栽培介質再以HC1及Ca(OH)2溶液調整pH值，經調整後的實際pH值分別為4.6、5.1、5.6、6.0、6.3、6.5及7.4。試驗結果顯示；栽培介質pH值在4.5－6.5之間，株高、花朵數、花乾重及植體乾重均有較佳的表現，迴歸分析結果均達顯著或極顯著差異。再以聖誕紅綜合性狀平均相對值評估適宜的pH值範圍，其適宜值應在4.8－6.4之間。

關鍵字

聖誕紅 ； 栽培介質 ； pH值

並列摘要

The objective of this study was to determine the optimum pH value of growth medium for potted poinsettia. Experiment was conducted at Hsinwu Taoyuan from 2003 to 2004. The growth medium was made by mixing rice bran, rice hull and mushroom waste at the rate of 1:2:2 (v/v), and then mixed with sand and perlite at 2:1:1 (v/v/v) proportions. The solutions of HCl or Ca(OH)2 were added to adjust the pH value to 4.6, 5.1, 5.6, 6.0, 6.3, 6.5 and 7.4. Results of the experiment showed that in terms of potted poinsettia growth characters the better pH value for plant height, number of flower, dry flower weight and dry plant weight was found at 4.5-6.5. The calculated average relatively value of characters (ARVC) indicated that the optimum pH value for potted poinsettia should be between 4.8-6.4.

並列關鍵字

potted poinsettia ； growth media ； pH value of medium