黄花美冠兰生长发育规律及主要营养元素含量变化的研究  

The Regularity of Development and Some Mineral Elements Content of Eulophia flava

作　　者：张欢[1,2] 尹俊梅[2] 杨光穗[2] 

机构地区：[1]海南大学园艺园林学院,海南儋州571737 [2]中国热带农业科学院热带作物品种资源研究所,海南儋州571737

出　　处：《热带作物学报》2010年第9期1535-1541,共7页Chinese Journal of Tropical Crops

基　　金：国家科技支撑计划项目(No.2007BAD45B06);中央级基本科研业务费(No.PZS048);农业部热带作物种质资源利用重点开放实验室开放基金项目(No.YJS-2009-S009)资助

摘　　要：对黄花美冠兰[Eulophia flava(Lindl.)Hook.f.]地上部与地下部的生长动态进行了观察,分析了各时期叶片和新假鳞茎中N、P、K、Ca和Mg元素在干物质中的含量。结果表明:2007年1月26日栽植的黄花美冠兰开花母球,在1个半月后迅速进入花期,花芽生长迅速;新形成的假鳞茎的生长速度较慢,横径和纵径的生长速度几乎一致;6月以后新假鳞茎的生长速度加快,但纵径的生长速度大于横径,10月开始生长速度又变慢,11月末以后几乎停止生长。在整个生长期,新假鳞茎的直径大小变化与干鲜重的变化规律基本一致,但不同时期的变化幅度不同。总体来说,随着新假鳞茎的不断生长,N、P、K和Ca的含量不断增加,到后期含量基本稳定或略有下降;而Mg的含量在6月底达到最大值,随后下降再缓慢上升至稳定。The development patterns of the Eulophia flava（Lindley） Hooker f.,both above ground and underground,were analyzed,as well as the absorption regularity patterns of N,P,K,Ca and Mg in different periods.The results showed that the change regularity of new corm diameter size coincidented with the change of fresh and dried weight,and how the changes varied in different periods.The new corm’s diameter size increased slowly and flower bud grew fast during one month and a half after planting,the growth rate of longitudinal diameter was the same as the diameter of the growth rate;The new corm grew fast after June,however,the growth rate of longitudinal diameter was greater than the diameter of the growth rate,at the begin of October the new corm grew slowly and stopped growing at the end of November.During this growth period,the absorption of N and K were bigger than P.During the later stage of the new corm’s growth,the absorption amount of K became large and the peak value appeared in the end of October.To some certain extent,the absorption of Ca and Mg was related to the E.flava’s growth above ground.

关 键 词：黄花美冠兰 生长发育 营养元素含量 

分 类 号：S682.31[农业科学—观赏园艺]