不同遮荫条件下少花桂幼苗的生长分析

对生长在不同光照条件下的少花桂幼苗生长期生长状况进行了生长分析，结果表明：不同遮荫条件下的少花桂幼苗的叶面积指数（LAI）和净同化率（NAR）变化趋势由大到小的顺序是：一层遮荫，自然光照，二层遮荫，三层遮荫；叶面积比率（LAR），叶面积干质量比（SLA），叶干质量比率（LWR）随遮荫程度加深而增大，从时间上来看，4-9月LAI不断增大，LAR，SLA，LWR，NAR则先增大，后表现出下降的趋势。

Growth Analysis of Cinnamomum Pauciflorum Seedlings Under Various Light Intensities

The Cinnamomum pauciflorum biennial seedlings to various light intensities in growth is analyzed declining. The studies showed that the LAI and NAR are reduced in four light intensities in declining order: one layer shading, full sunlight, two layer shading and three layer shading. With light intensities inereasing the rates of LAR, SLA and LWR are increased. From April to September, LAI increases constantly, the other four indexes sign increasingly at first, then drop down.