摘要
对不同放牧强度下短花针茅荒漠草原建群植物——短花针茅的繁殖特性进行了研究。结果表明:短花针茅随着放牧强度的增加,生殖枝的分化率在降低,单位面积的种子产量在减少。实生苗在封育区有少数出现。随放牧强度的增加,短花针茅大株丛减少,中小株丛增加,这种"分丛"现象是其营养繁殖的方式。
This paper investigated reproductive characteristics of Stipa breviflora under different grazing intensities in Stipa breviflora Desert steppe in Siziwang Banner of Inner Mongolia in 2004.The results were as follows： with the increase of grazing intensity,density of reproductive shoots/density of total shoots（%） and seed production decreased.Seedling could be observed only in no-grazing plot.With the increase of grazing intensity,the number of big clusters of Stipa breviflora reduced and small clusters increased,the phenomenon could be explained with the vegetative propagation mode of Stipa breviflora.
出处
《山西农业大学学报（自然科学版）》
CAS
2008年第1期4-6,共3页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
农业部草地资源重点实验室项目(200401)
关键词
短花针茅
放牧强度
繁殖特性
Stipa breviflora
Grazing intensity
Reproductive characteristics
作者简介
杜利霞（1978-），女（汉），内蒙古武川人，硕士，主要从事种质资源方面的研究。
