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紫花苜蓿学名Medicago sa-tira L.是世界上栽培最早的牧草,现已遍种世界各地。为观测各地苜蓿在上海地区的适应性,1985年从我国北方引进8个品种进行测试,结果以山西紫苜蓿生长及产量最好。1988年又从美国先锋种子公司引进10个品种,以山西紫苜蓿为对照,进行品种测试。测试在我院农试场进行,每品种小区面积7.75米~2,随机排列,三次重复。播前耕翻15厘米深,每亩施复合肥50公斤,播种行距20厘米,每小区12行,开沟条播,播深0.5厘米,4月20日播种,7月22日初花期第一次刈割,8月26日、10月6日、11月3日再次刈割,全年共4次。测定株高、鲜草重及干草重(绝对干重)。一、亩产草量
Alfalfa scientific name Medicago sa-tira L. is the world’s first cultivated pasture, has been all over the world. In order to observe the adaptability of alfalfa in Shanghai, eight varieties were introduced from northern China in 1985 for testing. The results showed that the growth and yield of alfalfa in Shanxi Province were the best. In 1988, Pioneer Seed Company from the United States introduced 10 varieties of Shanxi alfalfa as a control for variety testing. Test in our hospital farm trial, each variety of plot area of 7.75 m ~ 2, randomly arranged, three times repeated. Before sowing 15 cm deep, 50 kg of compound fertilizer per acre, sowing spacing of 20 cm, 12 per plot, sowing, sowing 0.5 cm, sown on April 20, July 22 at the beginning of the first florescence Mowing, August 26, October 6, November 3 again cutting, a total of 4 times a year. Height, fresh weight and hay weight (absolute dry weight) were measured. First, mu yield