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No.35 (1988/12) >

 
Title :パミスサンド栽培における培養液濃度およびわい化剤がパハヤの生育に及ぼす影響(農学部附属農場)
Title alternative :Effects of Culture Solution Concentration and Growth Retardant on Hydroponically Caltivated PAPAYA Plants Grown in aPUMICE SANDMedium (Agricultural Experiment Station)
Authors :米盛, 重保
比嘉, 照夫
Authors alternative :Yonemori, Shigeyasu
Higa, Teruo
Issue Date :5-Dec-1988
Abstract :2mm以下の粒状の軽石をパミスサンドと称することにし, パミスサンドを培地に利用してパパヤの養液栽培の可能性を試みた。また, パミスサンド栽培における栽培液濃度とわい化剤がパパヤの生育に及ぼす影響について検討した。1.培養液濃度はOKF-1を500倍, 1,000倍, 2,000倍および3,000倍区に設定し, 生育試験を行なった結果, 濃度が最も高い500倍区が草丈, 葉数, 茎径および着花(果)とも良く濃度が低くなるにつれて生育の遅延, 着花数の減少が顕著に現れた。これらの結果からパパヤは基本栄養生長型の作物であることが明らかになった。2.スミ7,スリトーン, B-9およびCCCの4種類のわい化剤を用いてわい化試験を行なった結果, 全てのわい化剤にわい化効果が確認され, スミ7の5倍区が最も高いわい化効果があった。3.パミスサンドを培地にしたパパヤの養液栽培は十分可能であることが明らかとなり, パパヤの施設栽培における連作障害対策として新しい方向性が示唆された。
The purpose of this experiment is to determine the possibility of hydroponic cultivation of Papaya plants in aPumice Sandgrowth medium.PumiceSandis as defined a pumice rock ground to a fineness of no larger than 2mm. Separate applications of culture solution and growth retardant were utilized in this experiment. 1. The culture solution aspect of the experiment was carried out in four separate cultivation beds using OKF-1 fertilizer concentrate diluted 500,1000,2000 and 3000 times. Optimum observed solution was 500 which yielded the best resulte in plant length, diameter, leafing and flowering duration and size. Increased dilution resulted in growth delay. From these results it is evident that the Papaya plant is a basic vegetative growth plant. 2. The growth retardant aspect of the experiment was also conducted in four cultivation beds with four solutions. The optimum solution observed was the sprayed application of SUMI-7 diluted five times. 3. The possibility of hydroponic cultivation of Papaya plants in aPumice Sandmedium was wholly confirmed. Additionally, a new tendency for the prevention of replant failure was suggested for the long term protected hydroponic cultivation of Papaya.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/3900
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.35 p.121 -128
Appears in Collections:No.35 (1988/12)

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