【摘要】 通过对两个引种的树状月季品系进行4个水平的施N肥(尿素)盆栽试验探讨树状月季植株在四季开花的同时确保良好的营养生长及株型的施N肥方法,观测植株的花枝长度增长量,花枝粗度增长量、花冠直径、花苞长度、冠高增长量5个性状,结果表明:4个不同的施N肥水平表现出极显著的差异,高N肥水平30～40 g/盆(盆土体积折合0.025 m3)产生了抑制或毒害作用,筛选出这两个品系盆栽的适宜用量范围为10～20 g/盆,以10 g/盆(折合404.4g/m3)为优选,可确保植株营养生长、生殖生长和树冠景观效果的协调增长,两个品系在效应值上均产生了极显著的差异,对施N肥效应有不同的敏感性。更多还原

【Abstract】 In this fertilizer experiment,two introduced lines of standard roses were tested with four levels of the dosage of N fertilizer(CO(NH2)2) in flower pots to discuss the way to fertilize the standard roses on condition that the growth of blooms,of vegetative organs,and of plant shapes were harmonious.The five traits(the increment of the length of bloom tress,the increment of the diameter of bloom tress,corolla diameter,corolla length,and the increment of the crown height,) were studied.The results showed that there was remarkable difference between four different levels of the dosage of N fertilizer,the higher level of 30～40 g/pot(the volume per pot equivalent to 0.025m3) resulted in inhibition or toxic effects,and the suitable dosage range of 10～20 g/pot were found out.The level(10 g/pot,equivalent to 404.4 g/m3) is preferred,which could ensure the coordinated growth of the vegetative growth,of the reproductive growth and of crown.Besides,there was significant difference at 1% level between two lines,and the characters of the sensitivity to N fertilizer of this two lines were different.更多还原