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当前位置: 首页 > 文章 > 苜蓿、无芒雀麦混播及单播草地产草量动态研究 中国草地学报 2006,28 (5) 23-28
Position: Home > Articles > A Study on Forage Yield Dynamics of Medicago varia /Bromus inermis Mixture and Single Grassland Chinese Journal of Grassland 2006,28 (5) 23-28

苜蓿、无芒雀麦混播及单播草地产草量动态研究

作  者：
张永亮;张丽娟
单  位：
内蒙古民族大学;甘肃农业大学
关键词：
苜蓿;无芒雀麦;混播草地;产草量动态;科尔沁地区
摘  要：
探讨了科尔沁地区不同苜蓿品种+无芒雀麦混播草地产草量动态。结果表明:苜蓿在孕蕾~盛花期、无芒雀麦在拔节~初花期单播草地产草量增长最快,以后增长缓慢,到成熟期产草量达到最大。混播延长了种群产草量积累时间,混播草地最高产草量出现时期晚于单播草地。种群产草量的净积累主要发生在生育前期(苜蓿开花前)。混播群落中3个杂花苜蓿+无芒雀麦群落的绝对生长率高于敖汉苜蓿+无芒雀麦群落。同种苜蓿混播与单播草地产草量快速积累期相同,不同种群产草量快速积累期有所差异。不同草地产草量的最大相对生长率出现时期相同,均出现在苜蓿孕蕾至开花期(无芒雀麦孕穗至抽穗期)。播种当年混播草地产草量高于单播草地,以后二年混播草地产草量明显低于单播草地。
译  名：
A Study on Forage Yield Dynamics of Medicago varia /Bromus inermis Mixture and Single Grassland
作  者：
ZHANG Yong-liang~(1,2),ZHANG Li-juan~(2) (1.Gansu Agricultural University,Lanzhou 730070,China;2.Inner Mongolia University for Nationnalities,Tongliao 028042,China)
关键词：
Kerqin region;Medicago varia;Bromus inermis;Mixture grassland;Yield dynamics
摘  要：
The research was conducted at Tongliao,Inner Mongolia Autonomous Region,for three plant-growing seasons from 2003 to 2005.The yield of mixture grasslands composed of different Medicago varia Martin and Bromus inermis was studied.The results showed that aboveground biomass of single sward increases fast from budding stage to full flowering stage of Medicago varia Martin(Bromus inermis from elongating stage to early booming stage),and reached highest in the mature period.Time of aboveground biomass accumulation of the mixed grassland was longer than that of the single grassland.Net accumulation of grassland biomass mainly occurred in its early growth period(20 th May to 9 th July).The absolute growth rate(AGR) and relative growth rate(RGR) of parti-colored flower' Medicago varia Martin in both single grassland and mixture grassland were higher than those of Medicago sativa.cv.Aohan.The RGR of different swards were highest from its budding stage to early flowering stage,but for Bromus inermis it was from elongating stage to heading stage.

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