【摘要】 本文在川东地区对13个紫花苜蓿品种物候期、越夏率、草产量、茎叶比、粗蛋白进行了研究。结果表明,凉苜1号生育期最短为251d,杰利生育期最长为326d;参试品种中共有10个品种可以越夏,且3年越夏率均超过了90%;年均鲜草产量皇冠最高,为50 792.05kg/hm~2;年均干物质产量凉苜1号最高,为11 013.17kg/hm~2;Adrenalin叶茎比最大,为95.36%;皇冠粗蛋白含量最高,为23%。通过灰色关联度法综合评价发现,皇冠、凉苜1号和Adrenalin品种综合性状表现较好,建议在川东地区推广种植。更多还原

【Abstract】 Thirteen alfalfa( Medicago sativa) varieties were chosen as research materials in the east Sichuan area. The phonological period,summering rate,grass yield,the ratio of stem to leaf,the content of crude protein were studied. The result showed that the phonological period of Liangmu No. 1 was the shortest( 251 d),the Phenological period of Jerry was the longest( 326 d); ten alfalfa varieties could over summer and the summering ratio exceeded 90% in the three years; The average fresh yield of Phabulous was the highest( 50792. 05 kg/hm~2); The average dry matter yield of Liangmu No. 1 was the highest( 11 013. 17 kg/hm~2); The ratio of leaf to stem of Adrenalin was the maximum( 95. 36%); The content of crude protein of Phabulous was the highest( 23%). The comprehensive characteristic of Phabulous,Liangmu No. 1 and Adrenalin had better performance and were suitable for cultivation in east Sichuan by grey rational comprehensive analysis.更多还原