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不同肥水EC值对观赏竹芋生长发育的影响

2021-09-11于宏郭丽娟李海峰杨阳吴磊樊伟娜张会娟刘莹莹苏晓琳

安徽农业科学 2021年17期

于宏 郭丽娟 李海峰 杨阳 吴磊 樊伟娜 张会娟 刘莹莹 苏晓琳

摘要 为了探索不同肥水EC值对竹芋生长的影响,将浓缩营养液配制成不同EC值的肥水,对比分析筛选出最适飞羽竹芋和“米娅”彩虹肖竹芋生长发育的浓度。结果表明,在EC值为1.2 mS/cm时,飞羽竹芋的株高、冠幅、叶片数、叶绿素含量等指标较优于其他处理,适合飞羽竹芋生长;而“米娅”彩虹肖竹芋在EC值为1.6 mS/cm时,生长最佳,各项指标较优于其他处理;此外,飞羽竹芋对肥水EC值较“米娅”彩虹肖竹芋敏感。

关键词 EC值;肥料浓度;竹芋;生长指标

中图分类号 S682.36 文献标识码 A

文章编号 0517-6611(2021)17-0155-03

doi:10.3969/j.issn.0517-6611.2021.17.041

Abstract In order to explore the effect of EC value of water-soluble fertilizers on the growth of Maranta arundinacea ,the concentrated nutrient solution was prepared with different EC value of water-soluble fertilizers, the optimal concentration of water-soluble fertilizers for the growth and development of Stromanthe sanguinea Sond. and Calathea roseopicta ‘Mia was selected by comparative analysis under greenhouse cultivation. The results showed that the best effect on promoting Stromanthe sanguinea Sond. growth was the EC value of 1.2 mS/cm with plant height, crown, leaf number and chlorophyll content; while under the EC value of 1.6 mS/cm, the growth of Calathea roseopicta ‘Mia was the best, which was better than other treatments; in addition, Stromanthe sanguinea Sond.was particularly sensitive to fertilizer concentration than Calathea roseopicta ‘Mia.

Key words EC value;Fertilizer concentration;Maranta arundinacea;Growth index

竹芋(Maranta arundinacea L.)为竹芋科多年生草本植物,广泛分布于南美洲、非洲和亚洲地区的热带地区[1-2]。近年来,随着城市化的进程,人民对品质生活的追求日益加深,家居环境、办公场所等已成为人们主要的养花场所,高档花卉也成了人们消费的主流商品[3-4]。竹芋凭借优美的姿态,美丽多变的叶型和斑纹,丰富的品种,成为家庭及办公场所主流观叶植物之一,具有广阔的市场前景。

飞羽竹芋(Stromanthe sanguinea Sond.)和“米娅”彩虹肖竹芋(Calathea roseopicta ‘Mia)都是竹芋科肖竹芋属多年生草本植物[5-7]。飞羽竹芋,叶厚革质,椭圆长卵形,叶片绿白两色对比清晰,叶背紫红色,侧芽较多,外形和手感都和羽毛非常相似,摸起来很舒服[5-6]。叶片白天平展打开,夜晚直立摺合,十分奇特,是观赏效果较好的室内观叶植物[6]。“米娅”彩虹肖竹芋,又名荷花肖竹芋或“青莲”竹芋,叶片宽大,椭圆卵形,叶脉中间呈黄色,叶脉两侧为深绿色和浅绿色条纹,叶色靓丽,叶片质感光滑,常使人误以为仿真花,也是观赏竹芋中为数不多的观花观叶兼具品种[7]。……

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