氮磷钾配施对四季桂秋季开花和养分积累的影响

Different Types of Fertilization Formula Affecting Autumnal Flowering and Nutrient Accumulation of Osmanthus fragrans

为研究不同氮磷钾配施对四季桂秋季生长、营养物质积累及产花量的影响,以盆栽四季桂品种‘金玉台阁’(Osmanthus fragrans‘Jinyutaige’)为试材,采用"3414"不完全正交回归试验设计。结果表明,适量增施氮、磷、钾肥均可显著提高四季桂产花量、花梗、花径、新梢生长、叶面积和可溶性糖、可溶性蛋白的含量。高氮中等磷钾肥N_3P_2K_2(N 3 g/盆,P 3 g/盆,K 1.5 g/盆)处理下新梢长度、粗度和叶面积最大;中等磷钾肥N_2P_2K_2(N 3 g/盆,P 3 g/盆,K 1 g/盆)处理下,四季桂叶片积累了更多的可溶性糖和可溶性蛋白等营养物质,从而得到更多的产花量,花梗最长,花径也最大。

To study the effects of N, P and K formulated fertilization on autumnal growth, nutrient accumulation and flower output of Osmanthus fragrans, this experiment took potted O. fragrans＇Jinyutaige＇as material and adopted＇3414＇incomplete regression-orthogonal design. The results showed that, flower output,peduncle length, flower diameter size, new shoot growth, leaf area, soluble sugar, soluble protein were significantly increased by moderately increasing use of N, P and K formulated fertilization. The new shoot length, roughness and leaf area reached the biggest under the treatment of higher N level and medium P and K level, namely, N_3 P_2 K_2（N 3 g/pot, P 3 g/pot, K 1.5 g/pot）; while soluble sugar, soluble protein, the amount of flowers, peduncle length, flower diameter size were the largest under the treatment of medium N, P and K level,namely, N_2 P_2 K_2（N 3 g/pot, P 3 g/pot, K 1 g/pot）.