北京地区中苜一号苜蓿年内草产量及品质分析

Study on Dry Yield And Protein of Alfalfas in Beijing

2002年在北京农学院农学试验站内对紫花苜蓿中苜一号各茬的株高、干草产量、粗蛋白含量的变化进行了分析。结果表明中苜一号紫花苜蓿全年干草总产量9582.3kg/hm2,第二茬与第一茬和第三茬的干草产量和株高存在显著差异。中苜一号苜蓿年内各茬粗蛋白含量依次是19.82%、11.70%和21.14%,第二茬与第一、三茬的粗蛋白含量差异达显著水平,除第二茬苜蓿等级评价为中等外,其余两茬都为上等。苜蓿加工调制的方法不同,也会影响其营养物质的含量。

Dry yield and crude protein of alfalfas and three main soil nutrient contents were measured before and at the end of 2001.The results showed that the total of the dry yield was 9582.3kg/hm2, the first, The protein of the first, second and third yield was 19.82%, 11.70% and 21.1%. The different way of treat and confection,will effect the protein content of Alfalfa.