野牛草分株对养分异质性供应的反应  

Effects of Nutrients Availability on Linked Two-Ramets of a Stoloniferous Herb, the Buffalograss

作　　者：牛建忠[1] 周禾[1] 张称意[2] 毛培胜[1] 王显国[1] 张佳华[2] 

机构地区：[1]中国农业大学草地研究所 [2]中国气象局,北京100081

出　　处：《草地学报》2006年第4期306-309,314,共5页Acta Agrestia Sinica

基　　金：国家研究与开发专项(JY03-B-31);北京市自然科学基金项目(6992015)资助

摘　　要：野牛草分株对养分异质性反应的研究表明:姊株能显著地从妹株分株生物量获益,但妹株并不能从姊株获益,属于单向获益;妹株株高、根系生物量显著地比姊株增长快;姊株1级匍匐茎总长、总节数、生物量及分蘖节生物量显著比妹株增长快;妹株能显著从姊株最长1级匍匐茎和分蘖节生物量获益。Results of the study on available nutrients to linked two-ramets of buffalograss （Buchloedactyloides） indicate that the first-growing ramets are benefited immensely from the next-growing ramets, but the latter are not repaid by the former which are the unidirectional beneficiary. The root biomass and height of the later-growing ramets apparently rise faster than those of the earlier-growing ramets. Contrarily, the tiller node biomass, 1^st stolon biomass, 1^st stolon node number, and 1^st stolon length of the first-emerging ramets grow quicker than those of the later-growing ramets. However, the next-growing ramets can be benefited from the first-growing ones in the tiller node biomass and the longest 1^st stolon.

关 键 词：野牛草 克隆植物 匍匐茎 养分 异质性 

分 类 号：S688.4[农业科学—观赏园艺] Q943[农业科学—园艺学]