刈割次数对甘肃中部饲用高粱生产性能的影响  

The Influence of Cutting Times on the Production Performance of Forage Sorghum in Central Gansu

作　　者：陈平 王斐[1] 贺春贵[1] 何振富[1] 谢建鹏 CHEN Ping;WANG Fei;HE Chungui;HE Zhenfu;XIE Jianpeng(Animal Husbandry-Pasture and Green Agriculture Institute,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China)

机构地区：[1]甘肃省农业科学院畜草与绿色农业研究所,兰州730070

出　　处：《中国草食动物科学》2021年第5期67-71,共5页China Herbivore Science

基　　金：兰州市科技计划项目(2019-1-65)。

摘　　要：为筛选适宜甘肃中部地区种植的饲用高粱青干草品种,通过种植陇草1号、魔术师、萨博、NX-D-61、NX-4264、百战等6个高粱品种,测试了每一茬次的酸性洗涤纤维(ADF)、中性洗涤纤维(NDF)、粗蛋白质(CP)、总可消化养分(TDN)含量,以及鲜草产量、干物质产量、粗蛋白产量和总可消化养分产量,分析了刈割茬次和品种对饲用高粱产草量及草品质的影响。结果表明,除百战的CP含量为刈割2次第1茬最高外,其余品种CP含量均为刈割2次第2茬最高,萨博NDF、ADF平均含量均显著高于其余品种(P<0.05);鲜草产量、干物质产量除NX-4264外,其余品种刈割2次总产量均大于刈割1次产量。综合饲草产量和营养物质产量来看,选择品种NX-4264采用刈割1次的生产方式最佳。In order to screen out sorghum green hay varieties(lines)suitable for planting in Yongdeng county,Lanzhou city,Gansu province,by planting 6 varieties of Longcao 1,Moshushi,Sabo,NX-D-61,NX-4264 and Baizhan.The acid detergent fiber(ADF),neutral detergent fiber(NDF),crude protein(CP)and total digestible nutrient(TDN)of every cutting were tested and analyzed,as well as fresh grass yield,dry matter yield,CP yield and TDN yield.Analysis the impact of cutting times and varieties on grass yield and quality of forage sorghum.The results showed that in addition to the highest CP content of cutting the first crop for the second time in Baizhan,the other varieties had the highest CP content of cutting the second crop for the second time the average content of NDF and ADF was significantly higher than the other varieties was Saab.The total yield of fresh grass and dry matter and CP of the other varieties two cutting was greater than first cutting except NX-4264.Comprehensive selection of forage yield and cutting method,the best choice of NX-4264 is the production method of 1 cutting.

关 键 词：刈割次数 饲用高粱 生产性能 营养品质 营养物质产量 

分 类 号：S54[农业科学—作物学]