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牧杰是越年生四倍体黑麦草新品种，由上海市种子公司从美国俄勒冈州调进，种子发芽率、纯度均达到国际良种标准，由于干净度极高，因此每667平方米地的用种量仅为现有国产种子的一半甚至更少，每亩地的播种量一般为10～22千克。经过与国内现有品种进行多年多点试种比较，牧杰作
Mu-jie is a new breed of annual tetraploid ryegrass cultivated by Shanghai seed company from Oregon, USA. The seed germination rate and purity reach the international standard of seed breed. Because of its high cleanliness, every 667 square meters The seed is only half or less of the existing domestically produced seeds, and the sown area per acre is generally 10-22 kg. After several trials with the existing varieties of domestic multi-year comparison, animal husbandry masterpiece