18个苜蓿品种在青海高原的比较试验
A comparison of adaptive cultivation of eighteen alfalfa varieties in the Qinghai Plateau

李春喜

文摘	2009-2010年在青海高原对18个苜蓿（Medicago sativa）品种进行比较试验，结果表明，种植第1年开花初期单株根长22.6～31.9 cm，根粗4.1～8.8 mm，单株分枝数4.1～6.8枝，株高43.9～80.1 cm，品种间差异不显著；种植第2年开始进入丰产、高产期，单株分枝数增加1.5～10.5枝，第1次刈割时株高在110.7～145.4 cm，比第1年第1茬高1倍，三得利、德宝、WL232品种表现最优；第2年全年鲜草产量和干草产量居前3位，鲜草产量在106614～121364 kg/hm~2，干草产量在30761～34934 kg/hm~2；美国杂花、德福32IQ、赛特、农保和阿尔冈金居第4～8位，鲜草产量91922～10282 kg/hm~2，干草产量为25410～29036 kg/hm~2，优于其他品种，表明这些苜蓿品种适宜青海高原东部农业区推广种植。
其他语种文摘	Eighteen alfalfa varieties were compared on their performances in Qinghai Plateau in 2009-2010. In the first planting year (2009), the root length, root diameter, number of branches per plant and plant height were 22.6-31.9 cm, 4.1-8.8 mm, 4.1-6.8, and 43.9-80.1 cm, respectively. No significant difference was observed among varieties during the early flowering period in 2009. The high-yield period appeared in the second planting year (2010); and the number of branches per plant increased by 1.5-10.5 times. The height of plants at the first mowing in 2010 was 110.7-145.4 cm, which was one time higher than that in 2009. Varieties of Sandeli, Debao, WL232 gave the highest fresh forage and hay yield in 2010, which were between 106 614-121 364 kg/ha and 30 761-34 934 kg/ha, respectively. America Zajiao, Defy32IQ, Sitel, Nongbao, Algonquin ranked 4~(th)-8~(th) with 91 922-102 822 kg/ha of fresh forage and 25 410-29 036 kg/ha of hay forage. These eight varieties had better performances than other varieties, which indicated they were suitable for cultivating in eastern agricultural areas of the Qinghai Plateau.
来源	草业科学 ,2011,28(11):1998-2002 【扩展库】
关键词	苜蓿 ; 产草量 ; 青海高原 ; 根系特征 ; 分枝数
地址	中国科学院西北高原生物研究所, 中国科学院高原生物适应与进化重点实验室, 青海, 西宁, 810001
语种	中文
文献类型	研究性论文
ISSN	1001-0629
学科	农作物;畜牧、动物医学、狩猎、蚕、蜂
基金	中国科学院西北高原生物研究所知识创新工程领域前沿项目
文献收藏号	CSCD:4374334