黄花苜蓿与4种禾草混播对返青期生物量动态的影响  

Effects of Mixed Sowing of Medicago falcata and Four Wheatgrasses on Biomass Dynamics in Returning Green Stage

作　　者：张振涛 张淑艳[1] 王靖宇 ZHANG Zhen-tao;ZHANG Shu-yan;WANG Jing-yu(College of Agriculture,Inner Mongolia University for Nationalities,Tongliao 028043,China)

机构地区：[1]内蒙古民族大学农学院

出　　处：《内蒙古民族大学学报（自然科学版）》2019年第4期321-324,共4页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古自治区饲用作物工程技术研究中心项目(MDK2018038);通辽市与内蒙古民族大学科技合作项目(SXYB2012060)

摘　　要：将黄花苜蓿、高冰草、蒙古冰草、细茎冰草、扁穗冰草5种牧草按豆禾比1∶2进行同行混播,研究建植第4年返青期牧草地上与地下生物量的动态.结果表明,混播组合群体地上生物量增长呈前期慢、后期较快的规律,地下生物量则呈先减小后增加的规律;黄花苜蓿与4种禾草组合地上生物量和地下生物量均有所提高,其中,蒙古冰草-黄花苜蓿的地上生物量和地下生物量均最高,并显著高于其他3种组合.Five forages Medicago falcata,Thinopyrum ponticum,Agropyron mongolicum,Slender Wildrye,and Agropyron cristatum were mixed and planted according to the ratio of Leguminous and Gramineae 1:2.The dynamics of aboveground and underground biomass of cultivated grassland in the fourth year of rejuvenation was determined.The aboveground and underground biomass growth of mixed population was slow in the early stage and fast in the later stage.The aboveground and underground biomass of Medicago falcata and four grass combinations increased.Among them,the aboveground biomass and underground biomass of Agropyron mongolictun-alialia were the highest,and significantly higher than other three combinations.

关 键 词：混播 根冠比 生物量 

分 类 号：S541.9[农业科学—作物学]