光照强度对黄金香柳扦插苗生长特性的影响

为了解光照强度对黄金香柳(Melaleuca bracteata cv.Revolution Gold)扦插苗生长特性的影响,研究了不同遮光处理(20%、40%、60%、全光照)下黄金香柳的生长特性。结果表明:不同遮光条件对黄金香柳扦插苗的株高、冠幅、地径有不同程度的影响,40%遮光处理有利于幼苗株高、冠幅、地径的增长;遮光条件下,黄金香柳叶宽、叶干鲜重、比叶重变化不显著,但叶长、叶面积随着遮光程度的增加均表现为先增大后减小的趋势,40%遮光处理最为明显。说明黄金香柳苗能够忍耐轻度遮光,适当遮光有利于其苗期生长。

Effects of light intensity on the growth characteristics of Melaleuca bracteata cv. Revolution Gold

In order to reveal the effect of light intensity on the growth characteristics of cuttings, we set the shading by four levels (20%, 40%, 60%, full light) of Melaleuca bracteata cv. Revolution Gold. The results showed that there were different effects on seeding height, crown breadth and ground diameter in four processing environment, the most conductive was 40% shading. Under shading treatment, there was no significant change on the leaf width, dry and fresh weight and specific leaf weight,. Meanwhile, both the leaf length and leaf area increased at first and then decreased with the increasing of shading degree, 40% shading was the most. The results suggested it could endure slight shading, proper shading was beneficial to the seeding growth.