草业科学2018，Vol.35Issue(5)：1208-1217,10.DOI:10.11829/j.issn.1001-0629.2017-0661
川西北高寒地区6个燕麦品种生长特性的比较分析
A comparative analysis of growth characteristics of six oat cultivars in the north-western Sichuan alpine region
摘要
Abstract
To select the best oats(Avena sativa)suitable for planting in the north-western Sichuan region,we assessed the phenological phase,plant height,stem diameter,hay yield,fresh weight/dry weight(FW/DW) ratio,proportion of stem,leaf and ear,and nutrient content(crude protein,ether extract,crude ash,neutral detergent fiber,and acid detergent fiber)among six oat cultivars(Qinghai No.444,Qingyin No.1,Lean,Din-gyan No.2,Ogle,and Monida).Results showed that all oat varieties completed their life cycles except for Din-gyan No.2.Qinghai No.444 and Qingyin No.1 experienced the shortest growth period,130 and 133 d,respec-tively.Plant heights of the tested oats ranged from 81.53 to 90.54 cm(P>0.05).The stem diameter of Monida was the largest at 4.35 mm,whereas Qingyin No.1 was the smallest at 3.32 mm.The hay yield of Lean was the highest(10 448.52 kg·ha—1),whereas Qingyin No.1 was the lowest(8 554.81 kg·ha—1).The FW/DW ratios of Qinghai No.444 and Qingyin No.1 were lower than that of the other varieties(P<0.05).Lean had higher leaf and ear proportions than that of the other cultivars.The crude protein content of Lean was 7.82%,which was higher than that of the other oats,whereas Dingyan No.2 had the lowest content(5.83%).The ether ex-tract content of Qingyin No.1 was 2.9 3%,which was higher than that of the other oat cultivars,whereas Ogle was the lowest at 2.48%.The crude ash,neutral detergent fiber,and acid detergent fiber content of Qinghai No.444 was the highest,being 4.60%,35.57%,and 63.27%,respectively.Dingyan No.2 was the lowest among the other oat cultivars,being 3.76%,32.00%,and 54.47%.Based on results from the comprehensive e-valuation analysis,Lean and Monida were the most suitable cultivars for promotion in the north-western Si-chuan region.关键词
生育期/株高/茎粗/产草量/鲜干比/茎叶穗构成/营养成分Key words
phenological phase/plant height/stem diameter/hay yield/fresh weight/dry weight/proportion of stem and leaf and ear/nutrition composition分类
农业科技引用本文复制引用
彭先琴,周青平,刘文辉,魏小星,田莉华,陈有军,王沛..川西北高寒地区6个燕麦品种生长特性的比较分析[J].草业科学,2018,35(5):1208-1217,10.基金项目
青海省科技厅重点实验室发展专项"青海省青藏高原优良牧草种质资源利用重点实验室"(2017-ZJ-Y12) （2017-ZJ-Y12）
四川省教育厅项目(14TD0049) （14TD0049）
青藏高原生态畜牧业协同创新中心开放基金 （）
