苏丹草、高丹草生物性状研究  

Biological characteristics of Sudan grass and Sorghum-Sudan hybrid

作　　者：庞良玉[1] 张建华[1] 

机构地区：[1]四川省农科院土肥所,四川成都610066

出　　处：《西南农业学报》2004年第2期160-163,共4页Southwest China Journal of Agricultural Sciences

基　　金：四川省农科院饲草新品种选育研究基金项目

摘　　要：通过6个苏(高)丹草品种生物性状研究,结果表明,不同苏丹草、高丹草品种及不同收割时期其产量及产量构成都具有显著差异。饲草产量在秋季前都以直线增长,进入秋季后增长速度下降。苏丹草类的生长速度和分蘖、再生能力总体上优于高丹草。综合试验结果来看,以苗期青饲为目的,宜选择4、5、6号品种;抽穗后收割利用的,则以选择4、1号品种较好;2号品种是青贮利用最好的品种。The studies on biological characteristics of 6 varieties of Sudan grasses and Sorghum-Sudan hybrids showed the yields and the yield components of different Sudan grasses and Sorghum-Sudan hybrids at different harvest times were significantly different. The grass yield increased linearly before Autumn, increasing rate went down in Autumn. The growth rate, tiller and regeneration ability of Sudan grass were generally better than that of Sorghum-Sudan hybrid. The results showed No. 4, 5 and 6 should be selected for green fodder, While No. 4 and 1 should be selected for harvesting at heading period,and No. 2 was a best variety for ensiling.

关 键 词：苏丹草 高丹草 生物性状 品种 收割时期 产量 生长速度 分蘖 再生能力 品种 

分 类 号：S544.103.7[农业科学—作物学]