不同遮阳处理对彩叶凤梨观赏性的影响

Effects of Different Shading Treatments on Ornamental Characteristics of Neoregelia

彩叶凤梨观赏性好,耐荫耐旱,日常养护管理简单方便,因此很受消费者欢迎,但光照强度对其叶色显现有很大影响。江南地区四季分明,夏季降温与遮阳是一对矛盾,生产上往往很难把握。本研究介绍了彩叶凤梨的形态特征和生长习性,通过平原和山区两地试验,明确了彩叶凤梨生产中大部分品种的光照强度在50 klx～55 klx为好,生产上以遮阳率50%即可控制光强不超过55 klx;但一些绿叶品种需光照稍弱些,在遮阳率70%下叶色较正常;70 klx的光强会使彩叶凤梨产生灼伤。本研究可为彩叶凤梨生产与日常养护提供指导。

Neoregelia has high ornamental value, which is tolerant to shade and drought. In addition, the daily maintenance and management of it is easy and convenient, so it is very popular with consumers. However, illumination intensity has great impact on its blade colour. The four seasons in the south of Yangtze River are distinct, and cooling and shading in summer are contradictory, resulting in difficulty in production. This study introduced the morphological characteristics and growth habit of Neoregelia. Through a series of experiments in both plain and mountain sites, we confirmed that the optimum illumination intensity for most varieties of Neoregelia was 50-55 klx. During production procedure, 50% shading rate could ensure illumination intensity under 55 klx, but some green blade varieties need weaker illumination intensity. The shading rate should be kept under 70% to maintain regular blade colour. 70 klx illumination intensity could burn the blade of Neoregelia. This study could provide guidance for production and daily management of Neoregelia.