1 前言净度检验是种子质量检验中的首要环节,净度检验试样重的最低限量,即2500粒净种子的重量,是关系到其它各项重量检验能否进行的问题。目前对牧草种子的研究比较少,特别是对我区优良牧草品种净度分析试样重最低限量的研究甚少。因此,在《国际种子检验规程》及我国《牧草种子检验规程》 1 Introduction Clarity test is the primary link in the quality inspection of seeds. The minimum weight of the test specimen for clarity test, that is, the weight of 2,500 net seeds, is a question that concerns whether other weight tests can be carried out. At present, there are few researches on forage seeds, especially few studies on the minimum weight of the samples for the analysis of good forage varieties in our region. Therefore, in the “International Seed Inspection Regulations” and our “forage seed inspection rules”