扁穗牛鞭草与紫花苜蓿不同混播比例草地生产特性评价  

Evaluation on the Production Characteristics of Mixture Grassland with Different Ratio of Hemarithria compressa and Medicago varia

作　　者：舒思敏[1] 傅鲜桃[1] 杨春华[1] 陈灵鸷[1] 何凌斐[1] 

机构地区：[1]四川农业大学动物科技学院,四川雅安625014

出　　处：《四川农业大学学报》2011年第1期114-118,共5页Journal of Sichuan Agricultural University

基　　金：现代农业产业技术体系建设专项资金

摘　　要：以不同混播比例的"广益"扁穗牛鞭草(Hemarthria compressa cv."Guangyi")和"盛世"紫花苜蓿(Medicagosativa cv."Shengshi")草地为研究对象,通过测定植株高度、冠层结构和产草量,对混播草地生产特性进行评价,旨在为割草地建植与管理提供理论依据。结果表明,混播组合LC2(50%扁穗牛鞭草+50%紫花苜蓿)表现最好,其次是LC1(75%扁穗牛鞭草+25%紫花苜蓿),在产草量方面两者差异不显著(P>0.05)。其中,混播显著提高紫花苜蓿植株高度,降低扁穗牛鞭草植株高度;与单播扁穗牛鞭草草地相比,混播组合的叶面积指数平均值小于单播扁穗牛鞭草草地,但总产草量均大于两种单播草地。This experiment was to evaluate the producing characteristics of mixed cut-grassland with different ratio of whipgrass（Hemarthria compressa cv.＂Guangyi＂） and alfalfa（Medicago sativa cv.＂Shengshi＂） by measuring the height of plant,canopy and yield before each cut,and then supply a theoretical basis for the building and management of mixed cut-grassland.The results showed that the treatments of LC2（50% ＂Guangyi＂ ＋50% ＂Shengshi＂） and LC1（75% ＂Guangyi＂ ＋25% ＂Shengshi＂） were both the optional mixture combinations.In mixed grassland,the height of ＂Shengshi＂ was increased and that of ＂Guangyi＂ was decreased.And in all treatments,the average of leaf area index（LAI） of mixed grassland was lower than that of monocultured ＂Guangyi＂ grassland.Furthermore,the yield of mixed cut-grassland was more than that of monoculture.

关 键 词：扁穗牛鞭草 紫花苜蓿 混播 植株高度 产草量 

分 类 号：S543[农业科学—作物学] S541