Age structure and dynamics of Zoysia japonica module population

编号 zgly0000390673

文献类型 期刊论文

文献题名 Age structure and dynamics of Zoysia japonica module population

学科分类 220.5010;园林植物学

作者 DAI Bao-qing  WANG Yan 

作者单位 Experimental Center of Shenyang Normal University  Institute of Applied Ecology 

母体文献 林业研究: 英文版 

年卷期 2005,16(2)

页码 117-120

年份 2005 

分类号 S688.4 

关键词 结缕草  构件  种群  年龄结构  分蘖特性  根状茎 

文摘内容 The age structure of the natural Zoysia japonica clonal population at Qipan Mountain in Huishan Scenic Spot of Shenyang,Liaoning Province, China was studied using the morphological method in 2003 and 2004. The dynamics of leaves were recorded and the dynamics of tiller and rhizome in the growing season were observed. The results indicated that the rhizomes formed in different years changed in color and rigidity. Its internodes produced in autumn became shorter. The number of naked nodes changed with the tiller age.Rhizome and tiller characters were used as a foundation for judging the ages of modules in this study. The longevity of tiller and rhizome was 3 years at most. At the beginning of the growing season, 2-year-old tillers and rhizomes predominated. Then I -year-old tillers and rhizomes increased rapidly and became dominant in July. The proportion of buds to tillers on quantity was stable at about 30% in the mid-phase of the growing season and rose to about 50% in autumn. The seasonal dynamics of tiller, rhizome and bud was very important to guarantee the sustained existence of the Zoysia japonica population. The turnover of modules was the mechanism of sustaining the rejuvenation of the Zoysia japonica clonal population。