“川西”猫尾草新品种区域适应性研究

Study on the regional adaptability of new variety of“Chuanxi”timothy grass

为了客观、公正、科学地评价“川西”猫尾草的牧草产量、适应性和品质特性等综合性状,于2013~2016年选用“岷山”猫尾草为对照品种,在7个国家草品种区域试验点进行多年多点试验.结果表明,2个猫尾草在青海海晏、同德和内蒙古海拉尔无法越冬;在甘肃甘南、红原、道孚和黑龙江宝清4个点都能良好生长,不同试验点年均干草产量由高到低顺序为:道孚>红原>宝清>甘南;“川西”猫尾草在4个点年均干草产量为8.21 t/hm^2,较对照品种平均增产6.12%,二者差异不显著(P>0.05).同一试验点,不同年份间干草产量差异极显著(P<0.01).

In order to objectively,justly and scientifically evaluate the comprehensive characteristics of forage yield,adaptability and quality characteristics of“Chuanxi”timothy grass,“Minshan”timothy grass was selected as the control variety from 2013 to 2016,and multi-point research was carried out in 7 national regional trial sites of grass varieties.The results showed that the two timothy grasses could not survive the winter in Haiyan,Tongde and Hailar;They could grow well in Gannan,Hongyuan,Daofu and Baoqing.The order of annual dry grass production from high to low was:Sichuan Daofu>Sichuan Hongyuan>Heilongjiang Baoqing>Gansu Gannan;the annual dry grass production of“Chuanxi”timothy grass in four sites was 8.21 t/hm^2,increasing by 6.12%on average compared with the control(P>0.05).At the same experimental site,the difference of hay yield between different years was very significant(P<0.01).