植物生長調節劑對提高大豆生產力之研究

Study on Plant Growth Regulator for Promoting Soybean Productvity

詹平喜(Pin-Hsi Jan) ； 張建生(Chien-Sheng Chang)

《花蓮區農業改良場研究彙報》 7期 (1991/05) Pp. 7-8

摘要

本試驗目的在以不同濃度之植物生長調節劑TIBA（23、38、58ppm）、SADH（500、750、1000ppm）配合不同之栽培密度60 × 10cm及60 × 5cm處理大豆花蓮一號，探討其對大豆一般農藝性狀及產量之影響。結果顯示TIBA對大豆株高、葉柄長度及葉面積有顯著之抑制效果，且其抑制效果隨濃度之提高而增強，在產量方面以TIBA∼38ppm配合密度60 × 10cm或密度60 × 5cm及SADH∼1000ppm配合密度60 × 5cm處理，公頃產量2,018∼2,175公斤，較對照區顯著增產達15.3∼22.6%，其餘處理濃度與對照區比較則互有差異，故藥劑處理濃度之篩選相當重要。其次由不同期作之試驗結果亦發現，生長抑制劑處理效果受環境因子影響很大，若在生長逆境下則其效果不易表現，甚至較無處理者差，因此，若欲達到推廣目標，則如何配合環境因子選擇適當之藥劑及農度，使其產量穩定性增加是相當重要的。

關鍵字

大豆 ； 植物生長調節劑 ； 氮肥 ； 栽培密度

並列摘要

The purpose of this study is to understand the soybean productivity affected by the different concentrations of TIBA. SADH accompanied with different cultural densities applied on soybean cultivar ”Hualien No.1”. The results indicated that plant height, leaf stalk length and leaf area were significantly inhibited by the treatment of TIBA, the similar effect was observed with SADH expect for leaf area. The higher inhibiting effect was accompanied with the higher concentration of TIBA and SADH. On yield, the TIBA -38ppm applied in densities 60 × 10 cm and 60 × 5cm and SADH-1000 ppm applied in 60 × 5cm were significantly higher than the check (non treated with growth regulator) by 15.3∼22.6%, Effect of some treatments of TIBA and SADH on yield weren't stable which revealed that screening for the optimum concentration of TIBA and SADH is very important. The results also revealed that the climatic condition affected the effect of growth regulator, the yield sprayed with TIBA and SADH will be low or less than the check if unfavorable climatic condition occured. For extension, it's important to select the best climatic conditions and the optimum concertration of TIBA and SADH for usage.

並列關鍵字

Soybean ； Plant growth regulator ； TIBA ； SADH