黄花美冠兰种球扩繁试验研究

对黄花美冠兰不同覆土方式；野外生长条件和人工栽培条件下的种球和根的营养成分及生物量进行比较；3因子3水平随机处理进行分析。结果表明，黄花美冠兰种植时应覆土3~5cm为好。一年生种球中N、P、K的含量较高，其次是二年生球；野外条件下的种球及根营养成分含量低于人工栽培条件下的营养成分含量。在选择种球时最好选择二年生球或者一年生球，体积相对大一些的；栽植时为了尽快获得大批量的新球，宜单个球种植。

Experimental Studies on Propagation of Eulophia flava Bulb

Eulophia flava (Lindl.) Hook. F，one of wild orchids, which was zigzag to grow. Based on every bulb had tip bud and kryptoblast, so study on the propagation of bulb. Analysis of soil cover, nutrient component and biomass of bulb and root which plant under field and cultivation conditions, complete of stochastic region design of three factor and three rates. The result showed the bulb was plant should cover soil when was propagate new bulb. The N、P、K content in annual bulb was more than in biennial bulb, and probability to florescence was annual bulb. But the biennial bulb propagated new bulb of transverse diameter and longitudinal diameter was better than the other bulb. A new bulb was propagated which should to select the biennial bulb in production. Under a field condition kind of ball and the root nutrition ingredient content is lower than under the manual cultivation condition. No significant variance in transverse diameter and longitudinal diameter of single, double and multi-bulb to propagate new bulb, and in order to obtains the mass as soon as possible the new bulb, suitable single ball to plant.