洋兰,又称热带兰,在国外倍受人们青睐,栽培也较普遍。近年来,我国陆续引进了一些洋兰名品,在一些地方试种取得成功,但不少人对CAM型洋兰的生活习性缺乏了解,影响了栽培效果。我们知道,绿色植物按其光合作用时,CO_2的固定、同化形式的不同,可以分为C-3、C-4和CAM(景天 Ocean blue, also known as tropical orchid, much in foreign countries favor, cultivation is more common. In recent years, some famous foreign products have been introduced into China and success has been tried in some places. However, many people lack a good understanding of the living habits of CAM-type foreign plants, which affects the cultivation effect. We know that according to their photosynthesis of green plants, CO2 fixation, assimilation of different forms can be divided into C-3, C-4 and CAM (Sedum