摘要
对紫花苜蓿与无芒雀麦2种牧草在单播和混播(分别占单播量30%和70%)的情况下的生长动态进行分析,探讨2种牧草在不同播种条件下的相互作用和生长规律。结果表明:(1)单播或混播对紫花苜蓿和无芒雀麦的生长均呈"S"型动态模式,可以用回归方程来表示,生长最快在4月15日到5月15日的抽穗扬花期和现蕾开花期;(2)成熟期混播牧草的生物量为1137.45gDM/m^2,比无芒雀麦单播提高了11.16%(P<0.05),比苜蓿单播下降了2.83%(P>0.05)。研究结果提示,无芒雀麦与紫花苜蓿混播和各自的单播相比,有利于无芒雀麦的生长和牧草生产,而对苜蓿的牧草生产影响不大。
The paper studied comparatively growing dynamics of alfalfa （Medicago sativa L. ） and smooth hrome（Bromus inermis Leyss） under single and mixed sowing（seed rate amount to 30 % and 70 % of single sowing respectively ） and in order to understand interaction and growing pattern under different sowing conditions. The results showed that： 1. forage growth had “S” dynamic pattern no matter single and mixed sowing, which can be expressed with regression equation,and the most rapid growing was in head-ing flowering period or squaring and flowering period（from April 15-May 15）. 2. Mixed sowing biomass in ripen period reached 1137. 45 g DM/m2 , and 11.16 % （P〈0. 05）more than single sowing of Smooth Brome ,2. 83% less than single sowing of alfalfa（P〉0. 05）. In a word, mixed sowing could promote plant growth and forage production of smooth brome more significantly compared with single sowing, but no apparent effect on forage production of alfalfa.
出处
《家畜生态学报》
北大核心
2017年第9期56-59,共4页
Journal of Domestic Animal Ecology
基金
郑州市科研攻关项目(43000419)
河南牧业经济学院科技创新团队项目(HUAHE2015002)
河南省重点科技攻关项目(162102110096)
关键词
苜蓿
无芒雀麦
混播
生长动态
alfalfa
smooth brome
mixed sowing
growing dynamics
