鳳梨施肥法對於春果産量影響之研究

Abstract

鳳梨春果在電石處理前後，分七種不同時期施用第三、四次追肥試驗，發現對於春果實大小，産量和果肉顔色有影響，均以電石處理前10天將第三次及第四次肥料一併施用者成果最佳，可達增産及提高品質之目的，但電石處理前後施肥，對抽穗率並無影響。 In this experiment pineapple seedlings were planted in September 1971 and each plant was treated with 50 cc. of 1% CaC2 solution when the pineapples were one year old on September 1, 1972 in order to promote flowering and fruiting. Seven treatments of fertilizer application were used before or after CaC2 treatment. The results showed no effect on fruiting of pineapple among treatments. The fruiting rate was from 98.33% to 99.58% Fertilizer applied before CaC2 treatment showed higher percentage of first and second grade of, pineapple Top dressing on 10 days before CaC2 treatment showed best result and all the top dressing applied after CaC2 treatment showed tower grade of fruit except the treatment F. The results also showed that the fertilizer applied before CaC2 had higher yield of pineapple. Top dressing on 10 days before CaC2 treatment showed 11% higher yield than the ordinary method Ck. The deeper yellowish flesh color of fruit was found in the treatments of the fertilizer applied before CaC2 treatment and the tre8tment with Anaton. But the treatment with Anaton showed lowest sugar content ad the ordinary treatment cit showed highest acid content In conclusion the best method of top dressing on pineapple for spring fruits production is appling the 3rd and 4th top dressing together on 10 days before CaC2 treatment