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本研究结果表明，苏丹草种子产量构成因素主要有：1是单位面积上的实生苗数及抽穗年，2是一级分枝数，3是单穗种子数，4是种子的落位性，5是种子的千粒重；其中对种子产量构成影响较大的因素是一级分枝数、单穗种子数，其次是落粒性和实生苗数，种子千粒重贡献较小。实验结果表明播期、播量、行距和施肥方式等栽培技术措施均对苏丹草种子产量有着明显的影响。在呼和浩特地区最佳播期为4月下旬，最佳播量为1．5～2．5Kg／亩，最佳行距为30cm，最佳密度为170株／M2左右；最佳施肥方式为施农家肥为基肥1000Kg、尿素追肥10kg。苏丹草种子落粒性较为严重，平均在20％～30％之间，选育落位性较低的品种是今后苏丹草选育的目标。
The results show that the main factors of Sudan grass seed yield are: 1 is the number of seedlings per unit area and heading years, 2 is the number of first-order branches, 3 is the number of single-spike seeds, 4 is the seed dislocation, 5 is the 1000-grain weight of the seed; among them, the factors that greatly affect the seed yield are the number of first-order branches, the number of single-spike seeds, the second is the number of shattering and the number of seedlings, and the contribution of 1000-grain weight is smaller. The experimental results showed that planting techniques such as sowing date, sowing date, spacing and fertilization methods had a significant effect on the seed yield of sudangrass. In the best sowing date in Hohhot in late April, the best sowing rate is 1.5 ~ 2.5Kg / mu, the best line spacing is 30cm, the best density is about 170 plants / M2; Fertilizer-based 1000Kg, urea top-dressing 10kg. Sudan grass seed shattering is more serious, with an average of 20% to 30%, breeding lower disheveled breeds Sudan grass breeding goal.