Abstract: In order to solve the problem of legume variety shortage in sub-tropical red soil region,Chamaecrista rotundif olia Greene.(CPI 86134) was firstly introduced from ATFGRC,Australia in 1996,and was registered and named C.rotundifolia cv.Minyin by China Forage Cultivar Registration Board in 2005.Variety comparison trial,regional trial and productive trial was carried out during 1997 to 1999,1998 to 2001,and 1999 to 2002,respectively.Results show that Minyin was an important annual or perennial tropical legume with hay yield of 9400 to 11000 kg·hm^-2 and seed yield of 140 to 280 kg·hm^-2 which were 130% and 77% higher than those of cultivar Wynn.Crude protein content was 17% when harvested at full blooming stage.In summary,Minyin should be recommended for extensive planting,due to its good performance,on hilly red soils in tropical and sub-tropical region in China.

Key words: Chamaecrista rotundif olia Greene.cv.Minyin, Adaptability, Hay yield

摘要： 针对亚热带红壤山地优质豆科牧草品种匮乏问题,1996年从澳大利亚牧草种质资源中心(ATFGRC)圆叶决明(Chamaecrista rotundifolia Greene.)品系号CPI 86134,2005年通过全国牧草品种委员会审定,定名为闽引圆叶决明(C.rotundifolia cv.Minyin)。1997年-2002年进行品种比较试验、区域试验和生产试验,结果表明:闽引圆叶决明系一年生或多年生半直立型热带豆科牧草,干草产量达9400-11000 kg/hm²,比对照品种威恩圆叶决明(C.rotundifolia cv.Wynn)增产128%以上,种子产量160-300 kg/hm²,比对照品种增产77%以上,差异均达极显著(P<0.01)水平,盛花期植株含粗蛋白质17%,在我国热带、亚热带红壤山地种植表现优良。

关键词: 闽引圆叶决明, 适应性, 产草量