【摘要】 以兰科植物叠鞘石斛为实验材料，通过研究光质对其形态及生理指标的影响，寻找提高叠鞘石斛观赏价值和经济价值的新方法。采用红蓝光搭配光质，处理组分别为T1组（红光：蓝光=3∶1）、T2组（红光：蓝光=1∶1）、T3组（红光：蓝光=1∶3），对照CK组为白光。每天照射2 h，照射7、14、21、28 d时分别取样检测。结果表明：（1）T1光质（红光：蓝光=3∶1）照射7 d时可有效增加叠鞘石斛茎长，照射21 d时可促进茎粗增加；（2）T2光质（红光：蓝光=1∶1）照射7 d时可促进茎长的增加；（3）T3光质（红光：蓝光=1∶3）照射可有效延长叠鞘石斛的花期，照射7 d时会有效增大叶绿素a、b含量，在21 d时会有效增大可溶性蛋白质的含量。采用红蓝光质按照不同配比照射，可有效调控叠鞘石斛的花期和生长，增加其观赏价值。更多还原

【Abstract】 In order to find a new method to improve the ornamental value and economic value of Dendrobium denneanum, Dendrobium denneanum was used as the experimental material to study the effect of light quality on its morphological and physiological indexes. Red and blue light was used in the experiment. The treatment groups were T1 group(red: blue = 3∶1), T2 group(red: blue = 1∶1), T3 group(red: blue = 1∶3), and the control group was white light. All the treatments were irradiated for 2 hours every day, and samples were taken for detection at 7, 14, 21 and 28 days. The results showed out:(1) T1 light quality(red light: blue light = 3∶1) could effectively increase the stem length of Dendrobium denneanum after 7 days of irradiation, and could promote the stem diameter after 21 days of irradiation;(2) T2 light quality(red light: blue light = 1∶1) could promote the stem length after 7 days of irradiation;(3) T3 light quality(red light: blue light = 1∶3) could effectively prolong the flowering period of Dendrobium denneanum, and could effectively increase the content of chlorophyll a and b at day 7 th, while could effectively increase the content of soluble protein at day 21. The results indicated that different ratios of red and blue light irradiation could effectively regulate the flowering period and growth of Dendrobium denneanum and increase its ornamental value.更多还原