噴霧週期對霧耕草莓生長與走莖繁殖之影響

Effect of Spraying Period on the Growth and Runner Propagation of Aeroponically Grown Strawberry

鄔家琪(Chia Chyi Wu) ； 謝政穎(Cheng Ying Hsieh) ； 張明毅(Ming Yih Chang)

《宜蘭大學生物資源學刊》 14卷 (2018/12) Pp. 95-112

https://doi.org/10.6175/job.201812_14.0007

摘要

霧耕是以養液加壓霧化後噴於植物根部供給養液進行作物栽培方式，可解決水耕水體溶氧不足的問題，同時較為節省資源。因此本研究擬探討噴霧週期對於霧耕栽培‘豐香’與‘香水’草莓生長與走莖繁殖的影響，並評估其適合之噴霧週期。噴霧週期設定為1（0.33/0.67）、5（1.67/3.33）、15（5/10）、30（10/20）、1h（20/40）、2h（20/100）和3h（20/160）（開／關，分鐘）作為處理組，以湛水式水耕栽培作為對照組。處理8週後所有噴霧處理組草莓根部長度皆顯著比對照組短，但霧耕‘香水’草莓母株在噴霧週期低於1小時的處理組根部活性皆高於對照組，霧耕‘豐香’草莓母株根部活性則在所有霧耕週期處理下皆高於對照組。在5（1.67/3.33）與15（5/10）噴霧週期下無論‘豐香’還是‘香水’草莓母株皆有較佳的生長與較多的走莖生成，累積走莖數為對照組的1.16－1.28倍。同時又可維持較多數量的走莖苗生物量，並減少24%以上電費與72.5%用水量。因此以5（1.67/3.33）或15（5/10）噴霧週期對於‘豐香’與‘香水’草莓的生長與走莖繁殖較為適合。

關鍵字

草莓 ； 水耕 ； 霧耕 ； 噴霧週期 ； 走莖繁殖

並列摘要

Aeroponics is a kind of plant cultivating method with spraying nutrient-rich solution in the root-zone environment. This approach provides easy manipulation of gaseous environment around the roots and solve oxygen deficient problem and also save resources. The objective of this study was to investigate that the effects of the spraying period of nutrient solution on the growth and runner propagation of the strawberry 'Toyonoka' and 'Aroma'. There were seven treatments with various spraying periods conducted in this study: 1 (0.33/0.67), 5 (1.67/3.33), 15 (5/10), 30 (10/20), 1h (20/40), 2h (20/100), and 3h (20/160) (on/off, min). The control group was the plants grown hydroponically with deep flow technique. The results showed that the root length of control group were longer than all the treatment groups. However, root activity of 'Aroma' in the treatments of period less than 1 hour was higher than those in control group. The 'Toyonoka' root activity in all aeroponical treatments was higher than control groups. The 5 (1.67/3.33) and 15 (5/10) treatments groups of 'Toyonoka' and 'Aroma' strawberry stocks plant had better growth and more runners number than the other groups. The accumulation runner numbers of 5 (1.67/3.33) and 15 (5/10) treatments groups relative to CK were 116-128%. Both strawberry stocks plants in 5 (1.67/3.33) and 15 (5/10) treatments could also maintain the more biomass of runner plants and save 24% electricity cost and 72.5% total water consumption. Thus, this study suggested that more suitable treatments of spraying period for the growth and runner propagation of the strawberry 'Toyonoka' and 'Aroma' were 5 (1.67/3.33) and 15 (5/10).

並列關鍵字

Strawberry ； hydroponics ； aeroponics ； spraying period ； runner propagation