新疆伊犁2种生境无芒雀麦种群的生产力特征  

Productivity Characteristic of Bromus inermis Populations in Two Habitats in Yili of Xinjiang

作　　者：张维[1,2] 贾娜尔[1] 吾尔恩[1] 赵玉[1] 杨允菲[2] 

机构地区：[1]伊犁师范学院化学与生物科学学院,新疆伊宁835000 [2]东北师范大学草地科学研究所植被生态科学教育部重点实验室,吉林长春130024

出　　处：《安徽农业科学》2012年第3期1362-1364,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(31160072;31170504);新疆高校科研计划项目(XJEDU2008I36);伊犁师范学院科研项目(2009-17)

摘　　要：[目的]从种群水平分析2种生境无芒雀麦(Bromus inermis)构件的生产力特征,为牧草的管理和生产实践提供科学依据。[方法]选取典型生境样地,采用单位面积法进行取样。[结果]无芒雀麦种群在2个生境均为营养分蘖株生物量>生殖分蘖株生物量。分蘖株总生物量和营养分蘖株生物量为生境1>生境2,而生殖分蘖株生物量为生境1<生境2。各龄营养分蘖株和生殖分蘖株生物量为1龄>2龄>3龄,以1龄分蘖株占绝对优势。2种生境无芒雀麦种群根茎总生物量大体相等,各龄根茎生物量也为1龄>2龄>3龄。[结论]2种生境无芒雀麦种群均呈增长型年龄结构。[Objective] To analyze the productivity characteristic of Bromus inermis in two habitats at the level of population,so as to provide scientific proof for the management and production practice of pasture.[Method] Sample plots of typical habitat were selected and the sampling method of unit area was adopted.[Result] The biomass of Bromus inermis population was vegetative tillers reproductive tillers in two habitats.The total biomass of tillers and the biomass of vegetative tillers were habitat 1 habitat 2,while the biomass of reproductive tillers was habitat 1 habitat 2.The biomass of vegetative tillers and reproductive tillers of every age class was habitat 1 habitat 2habitat 3,and tillers of 1st age class was dominant absolutely.The total biomass of rhizomes of Bromuinermis populations in two habitats were approximately the same,the biomass of rhizomes of every age class was habitat 1 habitat 2habitat 3.[Conclusion] The Bromus inermis populations in two habitats showed expansive age structures.

关 键 词：无芒雀麦 分蘖株 根茎 生产力特征 

分 类 号：Q948.1[生物学—植物学] S543.8[农业科学—作物学]