野生清香木姜子的表型特征及其与产量的关系

为了给清香木姜子的优良单株选择、人工栽培及开发利用提供理论依据,采用野外实地观测及数理统计的方法,对野生清香木姜子的表型特征及其与产量的关系进行了研究.结果表明:在天然林中,清香木姜子平均第一活枝高达2.03m,但总体树型不大；产量与二级分枝数量、二级分枝夹角、冠幅、胸径都存在极显著相关关系,尤其是与二级分枝数量密切相关(相关系数为0.793 5)；其果实在主枝顶端、一级枝、二级枝和三级枝上均有分布,但挂果率最高的是二级枝(占81.6％).建议:人工培育清香木姜子时注意控制密度,并通过人工干扰措施促进分枝数量,特别是二级分枝数量及长度,矮化植株,减小第一活枝高度.

Phenotypic Characteristics and Its Relationship with Output of Litsea euosma

To provide theoretical references for selection of excellent individuals,artificial cultivation,development and utilization of L.euosma,phenotypic characteristics and its relationship with output of L.euosma,were studied by field investigation and mathematical statistic method.The results showed that in the natural forest,average high of the first live branch of L.euosma amounted to 2.03 m,but the overall tree type was small.In addition,the relationship of output with number and included angle of the second-class branches,crown diameter and diameter at breast height were all very significant,especially with the number of the second-class branches(R=0.793 5).The fruit distributed on the top of bough,the first-class branch,the second-class branches and the third-class branches,but the fruiting rate of the second-class branches was the highest,accounting for 81.6%.Suggestions: When artificially planting L.euosma,it is essential to control the density,additionally,to promote the number of branches by manual measures,especially the quantity and length of the second-class branches,dwarf the heights of plant and first live branches.