刈割次数对杂交甜高粱草产量及品质的影响  

Effects of clipping frequency on yield and quality of hybrid sweet sorghum

作　　者：郑庆福[1] 杨恒山[2] 赵兰坡[1] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118 [2]内蒙古民族大学农学院,内蒙古通辽028000

出　　处：《草业科学》2009年第2期76-79,共4页Pratacultural Science

基　　金：内蒙古自治区自然科学基金项目"农区与奶牛饲养相适应的饲草优化种植模式研究"(200508010316)

摘　　要：针对当前春夏青绿饲草短缺现状,试验以2001年引入的杂交甜高粱新品种——甜格雷兹Sorghum bicolourvar.Sugargraze为试材,进行刈割次数研究。结果表明:随着刈割次数的增加,鲜草、干草和粗蛋白产量降低,单位品质含量增加。其中1次刈割产鲜草、干草和粗蛋白质量最高,分别为:110.78、29.75和1.25 t/hm2,2次刈割次之,且糖锤度高,适口性好,利于饲喂;3次刈割则较低,不宜采用。Clipping frequency of Sugargraze, a new hybrid variety of sweet sorghum introduced in 2001, was studied. The result showed that with the increasing of clipping times, fresh and dry yield, crude protein reduced, but the unit content increased. Cutting only once had the highest fresh, dry yield and crude protein of 110 780, 29 750, 1 250 kg/hm^2, respectively; the treatment of 2 cuttings followed, but with higher stem sugar content; 3 cuttings was the worst and should not be used.

关 键 词：刈割次数 甜高粱 产量 品质 

分 类 号：S548[农业科学—作物学]