摘要
试验对从青海引进的5个燕麦品种不同生育期的产量、营养成分进行了观测,并利用灰色关联度法进行综合评价,从而为缓解甘南地区枯草季饲草供应不足的现状提供科学依据。结果表明,随着生育期从抽穗期到盛花期的推移,5个燕麦品种的干草产量均显著增加(P<0.05),而粗蛋白(CP)含量均显著降低(P<0.05)。抽穗期林纳综合性能最优,其余为青引1号>加燕2号>甜燕麦和青海444。初花期综合性能表现为林纳>青引1号>甜燕麦>青海444>加燕2号。各品种在盛花期综合性能均优于前两期,其中加燕2号综合性能最好,其次为甜燕麦>林纳>青引1号和青海444,此时加燕2号干草产量、NDF、ADF均高于其它4个品种(P<0.05),甜燕麦CP高于其它4个品种(P<0.05),其它4个品种间CP含量差异不显著(P<0.05)。综合总体性能和对当地的适应性,加燕2号、甜燕麦、林纳和青引1号可以在当地建植,且宜在盛花期青刈利用。
To set up a scientific basis for easing forage short supply in Xiahe, Gannan,hay yield and nutrients of 5 oat varieties introduced from Qinghai province at deferent growing stages were observed and determined and the data was analyzed through grey relational degree. The results showed that the mean hay yield of the five varie- ties increased as the growing stage goes on （P〈0. 05）, but the mean CP contents decreased （P〈0. 05）. The comprehensive performance in heading stage was better than in early flowering and full flowering stage. Linna variety showed the best comprehensive performance in the heading stage among the five varieties, followed by Qingyin No. 1, Jiayan No. 2, Tian oat and Qinghai No. 444. The order of comprehensive performance from high to low was Linna, Qingyin No. 1, Tian oat, Qinghai No. 444, Jiayan No. 2 in the early flowering stage. The comprehensive performance of all varieties were better in the full flowering stage compared with the other two stages. In full flowering stage ,the hay yield, NDF and ADF contents of Jiayan No. 2 were significantly higher than the other varieties （P〈0.05） and the CP content of Tian oat was significantly higher than that of other varieties （P〈0. 05）. the findings concluded thatso far as the the harvesting time and the comprehensive performance as well as the adaptability of comprehensive consideration were concered, Jiayan No. 2, Tian oat, Linna, Qingyin No. 1 showed good performance to be potential varieties to Xiahe in the future and should be used at full flowering stage.
出处
《家畜生态学报》
北大核心
2014年第9期55-60,共6页
Journal of Domestic Animal Ecology
基金
国家公益性行业(农业)科研专项(201203007)
兰州大学中央高校基本科研业务费专项资金资助(Lzujbky-2014-96)
