摘要
为筛选出适应湖南农牧区冬闲旱地栽种的牧草品种,对3个燕麦(Avena sativa)品种(系)的物候期、株高、分蘖数、产量及茎叶比等进行比较研究。结果表明:品种间株高、产草量、茎叶比、营养成分等均存在显著差异,其中白燕7号表现最好,其株高为101.67cm,鲜草产量达70.91t.hm-2,株丛分蘖数7.6个.株-1,粗蛋白含量32.63%;白燕7号单蘖叶片量占单蘖重31.6%,白燕8号为31.3%,白燕2号为29.2%;燕麦单蘖重可用其与株高间线性模型Y=0.0437 X-2.89(R2=0.9134,P<0.01)估测,式中Y为单蘖重(g),X为植株株高(cm)。综合分析可知,白燕7号因具有较高产量和叶茎比,适于作为冬春饲草在湖南冬闲旱地推广种植。
The phenologicat phase, plant height, ratio of three oat （Arena sativa） varieties in the tiller number, nutrition constituent, yield and stem/leaf winter dry land of Hunan were studied. Results showed that three oat varieties had major differences in plant height, nutrition constituent, yield and stem/leaf ra- tio. Judging from all indexes, Baiyan 7 variety had the best performance. The plant height, plant tillers, fresh yield and crude protein content of Baiyan 7 were 101. 67 em, 7. 6 tillers, 70. 91 t ~ hm-2, and 32.63 ~//00, respectively. The proportions of all leaf weight to total weight of a tiller in Baiyan 7, Baiyan 8 and Baiyan 2 were 31.6%, 31.3% and 29.2%, respectively. A tiller weight of oat could be estimated/cal- culated by the following formula Y=0. 0437X-2.89 （R2 =0. 9134, P〈0.01）, where Y was the weight of a tiller （g） and X was the plant height （cm）. The conclusion was that Baiyan 7 had comparatively higher yields and leaf contents and more suitable for planting as a winter-spring forage in the winter dry land of Hunan.
出处
《草地学报》
CAS
CSCD
北大核心
2013年第1期123-126,共4页
Acta Agrestia Sinica
基金
湖南省燕麦引种试种研究项目(2011SZ2311)资助
关键词
湖南冬旱地
燕麦
生产性能
个体发育特征
Winter dry land of Hunan
Oat
Performance traits
Individual development characteristics
