草业学报Issue(2)：37-46,10.DOI:10.11686/cyxb2015146
15个苦荬菜新品种（系）在川西南地区农艺性状综合评价
Agronomic traits of 15 annual Ixeris polycephala varieties in the southwest of Si-chuan Province
摘要
Abstract
Agronomic traits of 15 Ixeris polycephala varieties were studied in field trials in Ya’an,in the southwest of Sichuan Province.The growth periods of new lines Chuanxuan No.1 and L5-4 were longer than Longmu (P <0.01).In the two years 2013 and 2014,the yields of new line Chuanxuan No.1 were the highest, with a notable yield advantage at the second defoliation and regeneration.The average hay yield of the new line Chuanxuan No.1 was 5585 kg/ha,a 64.75% (P <0.01 )increase,compared with Longmu.With respect to stem∶leaf ratio,the highest leaf content was found in the new line L5-4,and the second ranked was new line Chuanxuan No.1;the stem∶leaf ratios were 0.52 and 0.55,respectively.In terms of nutrients,the new line Chuanxuan No.1 had abundant minerals and high nutritional value,the crude protein was 26.12%,while crude fiber was 12.11%.Thus,the new lines Chuanxuan No.1 and L5-4 with high yields and leaves of high feeding value were suitable for recommendation for planting in the southwest of Sichuan Province.关键词
苦荬菜/产草量/茎叶比/营养成分Key words
Ixeris polycephala/yield/stem-leaf ratio/nutrition引用本文复制引用
班骞,黄琳凯,张新全,蒋林峰..15个苦荬菜新品种（系）在川西南地区农艺性状综合评价[J].草业学报,2016,(2):37-46,10.基金项目
国家现代牧草产业技术体系（CARS-35-05）和国家科技支撑计划项目（2011BAD17B03）资助。 （）
