盆菊栽培介質電導度適宜性評估

Assessment of Optimum Electrical Conductivity of Growth Media for Potted Chrysanthemum

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

《桃園區農業改良場研究彙報》 44期 (2001/03) Pp. 13-24

https://doi.org/10.29567/ZHWHGX.200103.0003

摘要

本試驗於1999年至2000年在桃園縣新屋進行，其目的在評估盆菊栽培介質適宜的電導度值，供為調配介質之依據。以腐熟米糠榖殼堆肥（牛糞：粉碎榖殼：金針菇木屑＋米糠＝1：2：2＋10 %）：河砂＝4：1（v/v）比例混拌為栽培介質，並以KC1實際調整EC值為0.75、2.01、2.33、3.72、4.14、5.27、6.25及7.47 dS/m。試驗結果顯示，盆菊栽培介質EC值過高時，明顯阻礙植株根部養分吸收，而導致植體養分吸收量降低，直接影響盆菊各種性狀之表現。栽培介質EC值高過於2.33 dS/m以上時，對盆菊之分枝數、植體乾重、根乾重、花朵數及花乾重均有明顯降低之趨勢，因此，盆菊栽培介質的適宜EC值應界定在2.33 dS/m以下。

關鍵字

盆菊 ； 栽培介質 ； 電導度

並列摘要

The experiment was conducted at Taoyuan Hsinwu from 1999 to 2000 to determine the optimum EC value of growth medium for potted chrysanthemum. The growth medium was made by mixing cattle excrement, rice hull, mushroom refuse and rice bran at the rate of 1:2:2+10%(v/v), and then mixed with sand at 4:1(v/v) proportions. The solution of KCl was added to the medium, and the EC value was adjusted to 0.75, 2.01, 2.33, 3.72, 4.14, 5.27, 6.25 and 7.47 dS/m. The results of the experiment showed that higher EC value of the media significantly affected the nutrient uptake of plant root and reduced the amount nutrient absorption by the plants, so that the performance of various characters of chrysanthemum was also affected. When the EC value of the media was above 2.33 dS/m, the number of branch, plant dry weight, root dry weight, number of flowers and flower dry weight of chrysanthemum were decreased significantly. These findings suggested that the optimum EC value of the media for potted chrysanthemum culture would be below 2.33 dS/m.

並列關鍵字

potted chrysanthemum ； growth media ； EC value of medium