元谋干热河谷区热带优良牧草引种试验研究

Introduction experiment of tropical high quality grazing in the arid-hot valley of Yuanmou

对2003年引进的15个热带优良牧草进行了适应性试验研究，以筛选出适宜元谋干热河谷种植的优良品种。结果表明，参试的15个牧草在本地区均能越早，正常生长。产量排在前3位的品种为杂交臂形草、6901坚尼草、T58坚尼草，年均干草产量分别为28480kg／hm^2、25515．5kg／hm^2、24308．5kg／hm^2。杂交臂形草比对照品种1，2，3分别增产56．5％、123．9％、76．9％；6901坚尼草比对照品种1，2，3分别增产40．2％、100．7％、58．5％；T58坚尼草比对照品种1、2、3分别增产33．5％、91．2％、51％。总体看所有参试种质叶量比茎多，品质好。

some introduced high quality grazing were evaluated to select suitable forage for in the arid-hot valley of Yuanmou in 2003.the result shows： Fifteen high quality grazing grew well and could be over arid season.The average air-dry yield are more well for Brachiaria hybrida, Panicum maximum Jacq. CIAT T58 and Panicum maximum Jacq. CIAT 6901. The yield were 28 480 kg/hm^2, 25 515.5 kg/hm^2 and 24 308.5 kg/hm^2 respectively, Brachiaria hybridawere increased by 56.5%, 123.9%, 76.9%, Panicum maxinmum Jacq. CIAT 6901 were increased by 40.2%, 100.7%, 58.5% and Panicum maximum Jacq. CIAT T58 were increased by 33.5%, 91.2%, 51% in comparison with the CK of 3 varieties. As a whole the leaves are more than stems, It is high quality for fifteen grazing germplasms in the experiment.