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研究了不同种植密度和施氮量对杂交狼尾草的产量和品质的影响．结果表明，本地生态生产条件下，以种植密度７株／ｍ２，群体和个体生长最佳，产量最高；杂交狼尾草对氮肥要求大，在本试验施氮范围（４７０ｋｇ／ｈｍ２）内，产量随氮水平提高而增加．较高氮水平下，分蘖发生多而快叶面积指数大，干物质积累多；茎叶蛋白质含量在生育期间变化很大，刈割期迟，蛋白质含量明显下降．增加氮肥用量可明显改善鲜草品质．
The effects of different planting densities and nitrogen rates on the yield and quality of hybrid Pennisetum were studied. The results showed that under the conditions of local ecological production, the population density and plant population were the best with the planting density of 7 plants / m2, and the yield was the highest. Hybrid Pennisetum had a great demand for nitrogen fertilizer. Within the range of nitrogen application (470 kg / hm2) Increases with increasing nitrogen levels. Under higher nitrogen level, tillering occurred more but the leaf area index was faster and the accumulation of dry matter was more. The protein content of stems and leaves varied greatly during the growth period, and the cutting period was delayed and the protein content decreased obviously. Increase the amount of nitrogen fertilizer can significantly improve the quality of fresh grass.