目的 研究自美国引进的高丹草（AS6016）在我国内蒙古自治区寒冷及干旱地区的种植表现，为推动饲草产业健康发展及畜牧业转型升级提供科学依据。 方法 以呼和浩特市布和家庭农场、兴安盟公主岭牧场为试验地，分别进行旱区和寒区种植试验，于2022年5月末实地种植高丹草（AS6016）53 hm²，分别于2022年8月、9月进行刈割，获取鲜草及干草试验样本，采用凯氏定氮法、索式浸提法等对粗蛋白、粗脂肪、糖分等营养成分进行检测，并进行了经济效益分析。 结果 确定高丹草（AS6016）最佳营养价值收获时间为拔节后期，该阶段收获并青贮后粗蛋白含量达11.78%、粗脂肪含量达1.91%，且产量与收益分别为同期青贮全株玉米的2.07、2.45倍。 结论 寒旱地区高丹草（AS6016）的种植与利用具有可行性，能够在保障草食畜产品有效供给、维护国家粮食安全上发挥重要作用。

Objectives The planting performance of American sorghum in cold and arid areas of Inner Mongolia Autonomous Region were studied to provide scientific basis for promoting the healthy development of forage industry and the transformation and upgrading of animal husbandry. Methods Buhe Family Farm in Hohhot City and Gongzhuling Ranch in Xing'an League were selected to conduct planting experiments in arid and cold region, respectively. 53 hm² of American sorghum (AS6016) was planted in the field at the end of May 2022. Harvest was conducted in August and September of 2022 to obtain fresh and dry grass test samples. The nutritional components including crude protein, crude fat and sugar were determined and analyzed with national standard methods including Kjeldahl nitrogen determination and Soxhlet extraction method, and the conomic benefits were analyzed. Results The harvest time for the optimal nutritional value of American sorghum (AS6016) was determined to be at the late stage of jointing. The content of crude protein and the content of crude fat reached 11.78% and 1.91% after harvesting and ensiling at this stage, with the yield and income of 2.07 and 2.45 times higher than that of the whole maize silage plant during the same period. Conclusions It is indicated that the planting and utilization of high American sorghum (AS6016) in cold and arid areas is feasible. It can play an important role in both ensuring the effective supply of herbivorous livestock products and safeguarding national food security.