元谋干热河谷区海狮苏丹草引种与适应研究

对云南干热河谷典型区元谋引入的海狮苏丹草Sorghum sudanense (Hay-King) Stapf.]进行适应性评价。结果表明：海狮苏丹草生育期95 d，种子黑亮，平均株高220.0 cm，再生能力强；刈割后分蘖数增多，可达58个，具褐色中脉特性；在元谋干热气候粗放管理条件下，年可刈割3～4次，平均鲜草产量达81.16 t/hm2，干草产量达19.03 t/hm2；营养价值高，粗蛋白含量达17.64%；适口性好，可用于牛羊鱼等草食动物饲养。总之，元谋干热气候条件在一定程度上影响其产量，但其优良

Introduction and Adaptability Evaluation of Sorghum sudanense(Hay-King) Stapf. in Hot Arid Valley of Yuanmou County

The present study was intended to bring a new grass named Sorghum sudanense (Hay-King) Stapf. into Yuanmou country, a typically place which was dry and hot arid zone, and evaluate it's adaptability. The results showed that S. sudanense (Hay-King) Stapf. growth period is 95 days and has regeneration ability, seed is black and produced at an average height of 220 cm; tillers increased after cutting, the number can be up to 58, characteristic by brown midrib; with extensive management in the conditions of hot dry climate, it can be mowed annually 3-4 times and the average fresh yield is 81 162.54 kg/hm2 and hay yield 19 033.21 kg/hm2; the grass has a great nutritional value, the content of crude protein (CP) is up to 17.64%; the grass is palatable and can be used for rearing herbivores such as cattle and sheep even fish. In summary, to a certain extent the yield is affected by hot and dry weather, but its good functional traits and ecological function showed a great development potential in the tested area.