青花菜三要素需要量試驗

An Experiment on the Effect of N.P.K. on Broccoli

（一）本試驗為研究化學對青花菜生產之影響及測定合適之施肥量，由民國五十五年十月至五十六年一月在臺中地區進行試驗。（二）本試驗採用3×3×3複因子設計，甘七種肥料處理複三次，共八十一小區、以氮、磷、鉀三種肥科，依無肥區「0」，肥料中量區「1」及肥料多量區「2」作不同之組合，田問排列採用隨機區組排列方法。（三）十月播種一個月以後定植，定植後一個月作生育調查。（四）產量經雙方分析結果。青花菜試驗中氮肥處理內有顯著差異，磷肥、鉀肥處理內無顯著差異，經再分析結果，氮肥中量區與氮肥多量區無顯著差異，僅對無肥區有顯著差異，則以氮肥中量區為經濟之施肥區。磷、鉀肥對產量無明顯之影響，但對植株之強健及品質方面有關，故亦以磷肥中量區及鉀肥中量區為合適。肥料配合，每十公畝需肥量為氮素廿公斤，磷素十五公斤，鉀素廿公斤。

1 The purpose of this study is to determine the influence of chemical fertilizers on the yields of broccoli. The experiment was carried out from October 1966 to March 1967 in Taichung 2. The design used for the experiments are 3×3×3 factorial in randomized blocks with three replications. Each of the three elements, N, P and K, has three levels. (Non, medium and large quantity) 3. Seedling was done in October and transplanting in November. 4. According to the analysis of variance, the effect of nitrogen on the yields of broccoli is significant and the effects of phosphorous and potash are not.