干旱区生态环境知识资源中心(Arid): 围封和放牧对垫状锦鸡儿种子产量的影响

Arid

	围封和放牧对垫状锦鸡儿种子产量的影响
其他题名	Effects of Fencing and Grazing on Caragana tibetica Seed Production
	陈维忠; 韩磊; 刘哲; 马成仓
来源期刊	草地学报
ISSN	1007-0435
出版年	2013
卷号	21 期号:6 页码:1223-1226
中文摘要	为掌握内蒙古高原荒漠区围封和放牧对垫状锦鸡儿（Caragana tibetica）种子产量的影响，通过野外定点调查统计了围封与放牧样地垫状锦鸡儿物候期、花朵参数、花朵数和果实数量。结果表明：围封与放牧样地垫状锦鸡儿物候无差别；花朵数、花生物量、花朵含水量和花朵有性繁殖投入在围封与放牧样地间无显著差异；围封样地花期败育率和果期败育率均极显著小于放牧样地（P<0.01），从而导致围封样地座果率为放牧样地的30倍（P<0.01）；放牧样地的幼荚果数和成熟荚果数均极显著低于围封样地（P<0.01）。这表明，放牧主要是通过降低座果率制约垫状锦鸡儿的种子产量。
英文摘要	To understand the effects of fencing and grazing on Caragana tibetica seed production, the phenological period of sexual reproduction, the biomass and water content of flower, the quantities of flower and fruit of C. tibetica under fencing and grazing conditions were investigated respectively in the arid desert area of Inner Mongolia Plateau. Results showed that the phenological period of sexual reproduction of C. tibetica was not significantly different between fencing and grazing plots. The biomass of flower, the water content of flower, and the sexual reproduction input of flower were not significantly different between fencing and grazing plots, either. In contrast, The abortive rates during flowering and fruiting phases in the fencing plots were significantly lower than those in the grazing plots, with the former being about 30 times as much as the later (P<0.01). The quantities of young-fruit and ripe-fruit in the grazing plots were also significantly lower than those in the fencing plots (P<0.01). These results indicated that grazing might limit the seed production of C. tibetica mainly through reducing fruit-set rate.
中文关键词	垫状锦鸡儿 ; 物候期 ; 种子产量 ; 败育率 ; 座果率
英文关键词	Caragana tibetica Phenological period Seed production Abortive rate Fruit-set rate
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4994497
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229251
作者单位	天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国
推荐引用方式 GB/T 7714	陈维忠,韩磊,刘哲,等. 围封和放牧对垫状锦鸡儿种子产量的影响[J],2013,21(6):1223-1226.
APA	陈维忠,韩磊,刘哲,&马成仓.(2013).围封和放牧对垫状锦鸡儿种子产量的影响.草地学报,21(6),1223-1226.
MLA	陈维忠,et al."围封和放牧对垫状锦鸡儿种子产量的影响".草地学报 21.6(2013):1223-1226.