冀草4号高丹草的引种适应性研究  

Study on the Adaptability and Introduction of Sorghum×Sudangrass cv.Jicao No.4

作　　者：蒋林 李龙[2] 王少青[2] 曾兵[2] 

机构地区：[1]重庆市丰都县畜牧技术推广站,重庆丰都408200 [2]西南大学荣昌校区,重庆荣昌402460

出　　处：《草业与畜牧》2016年第5期14-17,共4页Pruataculture & Animal Husbandry

基　　金：国家科技支撑计划课题"南方优质饲草高效生产加工利用关键技术研究与集成示范"(2011BAD17B03);重庆高校创新团队建设计划"现代化肉牛生产技术(Modern Technology in Beef Cattle Production)";"重庆市山羊技术体系牧草研究室"资助项目共同资助

摘　　要：本试验以国审高丹草品种乐食(Sorghum×Sudangrass cv.Leshi)为对照材料,对引进品种冀草4号高丹草(Sorghum×Sudangrass cv.Jicao No.4)在渝西地区的适应性和生产性能等进行综合比较分析。结果表明:冀草4号适宜在重庆荣昌试验点生长,生育期为155 d,较乐食(CK):130 d晚25 d,持久性更好,未见有严重病虫害。冀草4号在垂直高度、分蘖数、叶长、叶宽4个形态学指标上均极显著(P<0.01)优于乐食(CK);在相对高度、干鲜比、茎叶比3个指标上也均显著(P<0.05)优于乐食(CK)。尤其是在鲜(干)草产量表现上,冀草4号极显著(P<0.01)高于乐食(CK)。其中,冀草4号年平均鲜草产量达96 045kg·hm-2,较乐食(49 025kg·hm-2)高47 020kg·hm-2,平均干草产量(29 102kg·hm-2)比乐食(CK)高16 454kg·hm-2。综上所述,冀草4号在重庆荣昌试验点长势较好,生育期较乐食(CK)晚,可利用时间较长,表现出对当地生态条件的适应性,具有作为一种优质高产牧草品种进行种植和推广的潜力。Taking state approved SorghumxSudangrass cv. Leshi as control, comprehensively analysis on adaptability and production performance of introduced cuhivar named Sorghum ×Sudangrass cv. Jicao No.4 in Western of Chongqing region was conducted in this study. The results showed that Jicao No.4 had a better growth performance and found no serious plant diseases and insect pests in Chongqing Rongchang pilot which growth period was 155 d longer than Leshi（130 d） . And the four morphological indexes including vertical height, tiller number, leaf length, leaf width of Jicao No.4 were significantly （P〈0.01） better than Leshi （CK） . Especially the fresh（dry） grass yield of Jicao No.4 （96045 kg.hm-：,29102 kg.hm-2） were significantly （P〈0.01） better than Leshi （CK） that was 49025 kg-hm-： and 12648 kg.hm-2. What＇s more, the relative height, dry fresh ratio and stem-leaf ratio were significantly （P〈0.05） better than Leshi （CK） .Therefore, Jicao No.4 had a better adaptability to local ecological conditions of Chongqing Rongchang pilot that was available for a longer time than Leshi （CK） . It has potency on cultivation and promotion as a kind of high quality forage grass varieties.

关 键 词：冀草4号高丹草 形态 生物产量 适应性 

分 类 号：S544.022[农业科学—作物学]