Effects of Illumination Intensity on Ornamental Characteristics of Neoregelia

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 color.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 color.70 klx illumination intensity could burn the blade of Neoregelia.This study could provide guidance for production and daily management of Neoregelia.