农牧交错区5种禾本科牧草与草原二号苜蓿混播试验研究  

Study on the mix-sowing of five gramineous grasses and Medicago varia in pastoral-agronomy area

作　　者：张振琦[1,2] 宝音陶格涛[1] 熊樱[2] 潘庆民[2] 

机构地区：[1]内蒙古大学生态与环境科学系,内蒙古呼和浩特010021 [2]中国科学院植物研究所,北京100093

出　　处：《草原与草坪》2009年第6期15-19,共5页Grassland and Turf

基　　金：国家自然科学基金(30460086);内蒙古教育厅基金(32005)资助

摘　　要：研究5种禾本科牧草与草原二号苜蓿在不同混播方式下种群的生长高度、种间竞争率(CRi)及产草量。结果表明:草原二号苜蓿的生长不受单播、混播的影响,混播促进了禾本科植物的生长。随着豆科播种量的增加,各试验小区的产量增加。人工草地较天然草地有明显的增产作用。混播人工草地比单播人工草地又有显著的增产效应,其中2/3草原二号苜蓿+1/3披碱草的混播组合比其他组合增产现象明显。综合结果表明,草原二号苜蓿和缘毛雀麦的混播组合具有合理的禾/豆比例和较高的生产力水平,为较合理的物种组合。Five gralnineous grasses and Medicago varia were used to study the productivity under different mix-sowing treatments by measuring the height, competition rate（CRi）and aboveground biomass. The results showed that the height of Medicago was not influenced and the height of gramineous grasses was promoted by different mix-sowing treatments. The aboveground biomass in different plots increased with the seeding rate. Aboveground biomass was significantly increased especially in the treatment of 2/3 Medicago ＋ 1/3 Elymus dahuricus. The treatment of Medicago ＋ Bromus ciliatus was a better mixing combination with high ahoveground biomass and proper ratio between grass and legume.

关 键 词：禾本科牧草 草原二号苜蓿 农牧交错区 混播组合 人工草地 

分 类 号：S54[农业科学—作物学]