不同遮阳率对大花蕙兰‘开心果’平地栽培成花的影响

研究不同遮阳率对大花蕙兰‘开心果’开花性状及叶片的影响。结果表明：遮阳率为80%时开花率最高,花箭最多、最长、最粗,小花数最多,平均分别为5.56枝/盆、31.62cm、5.88mm、23.56朵/枝;遮阳率为60%时也可成花,但花箭数比遮阳率为80%时显著减少;遮阳率为94%时开花率最低,花箭数和小花数最少,花箭最短。3个处理间叶绿素含量差异显著,其中遮阳率为94%时最高,遮阳率为60%时最低。遮阳率为60%时叶尖焦枯严重,影响观赏价值。

Effects of sun-shading ratios on blooming during flat cultivation of Cymbidium Dorothy Stockstill ＇Forgotten Fruit＇

This article analyzed the effects of sun-shading ratio on the leaf and flowering performance of Cymbidium Dorothy Stock still＂Forgotten Fruit＂.The results indicated that,when the ratio is set at 80%,the plant performs best in aspects of blooming rate,flower stalk（5.56 flower stalks per pot on average）,stalk length（31.62 cm on average）and stalk thickness（5.88 mm in diameter on average）,and the quantity of minor blossom reaches 23.56 pieces per stalk on average,the maximum value in the observation.The number of flower stalk at the shading ratio of 60% is substantially reduced in comparison with that at the ratio of 80%.The blooming rate,the number of flower stalk and minor blossom at the shading ratio of 94% are the lowest in this experiment,and the flower stalk is the shortest as well.Discrepancy of chlorophyll content of the three groups is remarkable in contrast.The highest content appears at the shading ratio of 94%,while the lowest 60%.The leaf-tip scorch at the shading rate of 60% is serious,which degrades the aesthetic value of the plant.