甘肃夏河高寒牧区紫花苜蓿引种试验

Adaption of four alfalfa varieties to the alpine pastoral area in Xiahe County,Gansu Province

金皇后(Golden Empress)、阿尔冈金(Algonquin)、苜蓿王(Alfaking)、巨人201(Ameristand 201)4个紫花苜蓿(Medicago sativa)品种原引自美国,2004-2007年在甘肃省夏河县进行引种试验,对其生育期、生长高度、分枝数、鲜草产量、越冬率和抗逆性等指标进行了测定。结果表明,4个紫花苜蓿品种产草量较高,生产性能好,播种第1年平均越冬率在70%以上,第2年后平均越冬率在90%以上,抗逆性强,第3年后部分种子成熟,但产籽量较低,适合在海拔3 000m的高寒牧区推广种植建植栽培草地。

A field experiment was carried out to compare the adaption of four alfalfa varieties（Golden Empress,Algonquin,Alfaking and Ameristand 201） introduced from USA during the period 2004-2007 by measuring the growing period,height,branches per plant,fresh weight,overwintering rate and resistance in the Xiahe County,Gansu Province.This study showed that four alfalfa varieties performed well in the alpine pastoral area,indicating that the overwintering rates in the first year and the second year were over 70% and 90%,respectively.In the third year,the mature seeds were harvested,but its seed yields were low.This study suggested that four alfalfa varieties were suitable for establishing the pasture in the alpine pastoral areas.