【摘 要】
:
总结了2014年2~3月在云南楚雄彩云镇开展的拉伸膜饲草裹包青贮试验结果,分析了裹包后从3月~11月的青贮养分变化规律.试验结合示范推广,从示范推广裹包中随机运回贮存分析,因此,样品的选择紧密结合生产实际,对生产应用具有较高的指导价值.饲草的种类选择三得利紫花苜蓿、楚雄南苜蓿、大麦全株和蚕豆茎叶;分别测定了地间鲜草产量、干鲜比、株高、营养成分、粗蛋白产量等指标,在实验室测定了3月~11月青贮样品的
【机 构】
:
云南省草地动物科学研究院,昆明小哨650212 云南农业大学草业科学系,昆明黑龙潭650201
【出 处】
:
中国草学会饲料生产专业委员会第九届代表大会暨第十八次学术研讨会
论文部分内容阅读
总结了2014年2~3月在云南楚雄彩云镇开展的拉伸膜饲草裹包青贮试验结果,分析了裹包后从3月~11月的青贮养分变化规律.试验结合示范推广,从示范推广裹包中随机运回贮存分析,因此,样品的选择紧密结合生产实际,对生产应用具有较高的指导价值.饲草的种类选择三得利紫花苜蓿、楚雄南苜蓿、大麦全株和蚕豆茎叶;分别测定了地间鲜草产量、干鲜比、株高、营养成分、粗蛋白产量等指标,在实验室测定了3月~11月青贮样品的水分、PH值、霉变率、适口性、铵态氮、粗蛋白、粗脂肪、中性洗涤纤维和酸性洗涤纤维的变化规律.结果表明,在云南2~3月,紫花苜蓿和大麦适宜制作拉伸膜优质半干青贮草产品;楚雄南苜蓿具有制作拉伸膜优质半干青贮草产品的较大潜力,需完善制作技术和方法;蚕豆茎叶制作拉伸膜优质半干青贮产品需进一步研究干燥方法、缩短干燥时间.
其他文献
The use of clubroot resistance(CR)genes is an effective and economical approach to control Plasmodiophora brassicae,the causal agent of clubroot disease in Brassica rapa and other Brassica crops.In th
Blackleg,caused by Leptosphaeria maculans,is one of the most devastating diseases in B.napus production in Australia,Canada and Europe.Development of Blackleg resistant canola varieties is the most ef
Clubroot,caused by Plasmodiophora brassicae Wor.,is one of the most serious diseases affecting Brassica crops production worldwide.Quantitative trait loci(QTLs)for resistance to clubroot disease were
An alternative hybrid seed production system was established in Brassica napus by using herbicide tolerant line as male parent and the chemical emasculated line as female parent.To produce hybrid seed
Brassica napus L.,an allotetraploid (AACC,2n = 4x = 38) formed from the diploid B.rapa (AA,2n = 2x = 20) and B.oleracea (CC,2n = 2x = 18),is the most important vegetable oilseed crop in the world.Sing
In order to study the effect on inducing male sterility of chemical hybridizing agent SX-1 on Brassica napus L.in Zhangye area and screen out the optimal concentration and period for spraying,so as to
To dissect the genetic basis of oil content in B.napus is important for seed oil content improvement in breeding of rapeseed (B.napus L.).A large and new KN DH population containing 348 lines was obta
The genetic basis of Brassica napus is narrow because its short evolutionary history,no wild species,poor cytoplasm diversity,monotonous breeding objects,and founders effects due to shared parents fro
为筛选出适宜湖北地区种植的全株青贮玉米品种,采用随机区组设计,对14个青贮玉米品种的适应性、抗逆性、生物学产量和粗蛋白等指标进行研究.结果表明,明饲1号和花单1号生育期相对较长,其余品种在92~95天之间.大部分品种的株高在200cm以上;除华丰3号倒伏率较高外,其余品种几无倒伏;收获时,雅玉8号保绿度较其它品种相对较高.参试材料中,8493的鲜草和干物质产量分别为81177.85kg/hm2和2
苜蓿是界上栽培最广泛、最重要的多年生优质豆科牧草,有“牧草之王”的美誉,为了进一步探究苜蓿各生物学性状对苜蓿综合生产性能的影响,选育出适合与不育系MS-GN杂交的苜蓿品种,试验采用灰色关联度分析方法对15个苜蓿杂交组合F1代的主要产量和品质性状等进行了灰色关联度分析.结果表明,对苜蓿综合生产价值影响最大的因子是单株分枝数、干鲜比和粗蛋白,组合朝阳苜蓿×MS-GN综合生产性能最优,适宜在该地区大范围