豆禾混播草地群落稳定性的比较  

The community stability of the mixed grassland with leguminous and gramineous forages

作　　者：韩德梁[1,2] 何胜江[1] 陈超[1] 杨光梅[3] 韩烈保[2] 

机构地区：[1]贵州大学动物科学学院,贵州贵阳550025 [2]北京林业大学,北京100083 [3]江南大学生物工程学院,江苏无锡214122

出　　处：《生态环境》2008年第5期1974-1979,共6页Ecology and Environmnet

基　　金：贵州省科技厅基金资助项目[黔科合J字(2006)2045]

摘　　要：连续13年测定了由白三叶(Trifolium repens)、多年生黑麦草(Lolium perenne)等5种牧草混播形成的群落的地上生物量,以比较各群落的稳定性。结果表明,地上生物量与物种数成正比,复杂组合的地上生物量高于简单组合。V4组合[红三叶(Trifolium pratense)+白三叶(T.repens)+多年生黑麦草(L.perenne)+无芒雀麦(Bromus inermis Leyss)+紫羊茅(Festuca rubra)]地上生物量最高,与其它群落比较差异极显著(p<0.01);V1组合[(红三叶(T.pratense)+多年生黑麦草(L.perenne)]对杂草的抗性和竞争力最差,群落最不稳定;V3组合(白三叶+紫羊茅)对杂草具有很强的抗性和竞争力,群落稳定性最好。The aboveground biomass of each community make up of five kinds of forages, Trifolium repens, Lolium perenne, Trifolium pretense, Bromus inermis Leyss, Festuca rubra was continuously measured for 13a, which was in order to study the stability of mixed communities under the different components, The results showed there was a positive correlation between the aboveground biomass and the number of species, the aboveground biomass of the complex combination was more than that of the simple combination. The aboveground biomass of combination V4 was the most, and there was a marked difference with other communities（p 〈 0.01）. The tolerance and the competition capacity of combination V1 was the worst to weeds, and the community was very not stabilization, but combination V3 was good, its tolerance, competition capacity and the stabilization were all the best.

关 键 词：牧草 混播 群落 稳定性 

分 类 号：Q948[生物学—植物学]