摘要
通过燕麦草单播以及与光叶紫花苕、箭筈豌豆和毛苕子等3种苕子的混播试验,研究和比较燕麦草在单播和混播下饲草的生产性能和营养品质,为燕麦草的合理化利用提供依据。当燕麦草单播的播种量为225 kg/hm 2、与豆科牧草混播的播种量为75 kg/hm 2情况下,进行饲草田建植,然后在生长第二年分别测定饲料田的株高、生物量以及营养成分等指标,探讨了燕麦草在单播以及混播下牧草生长特点和营养水平。结果表明:(1)无论单播还是混播,牧草在抽穗-扬花(现蕾-开花)期生长速度最快,盛花期时牧草的株高为102.38~114.58 cm,其生长高度与生长天数的关系可以用logistic方程来表示来拟合;(2)成熟期混播牧草的生物量分别为781.33 g DM/m 2、712.71 g DM/m 2和697.40 g DM/m 2,分别比单播提高21.97%(P<0.05)、11.26%(P<0.05)和8.87%(P<0.05)。(3)花期混播牧草粗蛋白含量为9.67%~10.58%、比单播提高39.94%~53.11%(P<0.05),另外,粗纤维含量也得到显著降低。总之,燕麦草与苕子混播,可提高株高和生长速度,显著提高饲草的产量和品质。在混播的3种苕子中,光叶紫花苕更有利于提高混播草群的稳定性,更有利于提高饲草的产量和营养水平。
Based on single or mixed cropping trials of oat with vicia villosa,common vetch,vicia villosa roth,production performance and forage quality under different cropping conditions were analyzed or compared in order to produce more and better forage for local fine animal production in the future.When single sowing rate of oat was 225 kg/hm 2 and mixed cropping rate was 75 kg/hm 2 respectively,the forage grass field was constructed,and then plant height,biomass and nutrition levels were measured in the second year to learn dynamics of growth,production and nutrients of single or mixed sowing forage.The results showed that(1)regardless of sowing pattern,heading-flowering period(budding and flowering period)was most rapid growing periods and plant height reached 102.38~114.58 cm in full-bloom stage.Relationship of plant height with growing time was in conformity with the logistic equation.(2)The biomass in ripen period reached 781.33 g DM/m 2,712.71 g DM/m 2 and 697.40 g DM/m 2 for mixed sowing oat,21.97%(P<0.05),11.26%(P<0.05)and 8.87%(P<0.05)higher than single sowing.(3)Contents of crude protein(CP)of mixed sowing forage in flowering period reached 9.67%~10.58%,and 39.94%~53.11%(P<0.05)higher than that of single sowing,furthermore,content of crude fiber(CF)decreased significantly.In a word,mixed sowing can raise plant height and growing rates more apparently than single sowing,significantly improve forage yield and nutrients.In the three kinds of mixed cropping vetches,vicia villosa is more stable in keeping higher forage yield,forage quality and nutrition level of the mixed cropping vetches.
作者
郭孝
齐爽
牛晖
邓红雨
胡华锋
GUO Xiao;QI Shuang;NIU Hui;DENG Hongyu;HU Huafeng(Henan Animal Husbandry and Economy Institute,Zhengzhou Henan 450046,China;Henan Zhengzhou Breeding Farm,Zhengzhou Henan 450046,China)
出处
《家畜生态学报》
北大核心
2020年第5期61-65,共5页
Journal of Domestic Animal Ecology
基金
河南牧业经济学院科技创新项目(HUAHE 2015002)
河南省重点科技攻关项目(162102110096)
郑州市科技攻关项目(141PPTGG423)。
关键词
燕麦草
苕子
混播
生长
营养
oat grass
vetch
mixed sowing
growth
nutrition
