摘要
在位于高山草原地区的甘南州夏河县,通过田间随机区组试验,研究了箭筈豌豆(Vicia sativa)新品种兰箭1号(Lanjian No.1)在不同物候期(现蕾期、开花期、结荚期和成熟期)刈割时,其干草产量和粗蛋白(CP)、可溶性糖(WSC)、粗脂肪(EE)、中性洗涤纤维(NDF)含量和矿物元素等品质指标的表现。结果表明,各物候期的CP含量均达到美国一等饲草标准,其中,成熟期干草产量最高,WSC、EE和NDF含量适中,矿物元素P、K、Na、Mg和Zn含量能够基本满足高寒草地家畜的营养需求。利用灰色关联度分析和权重赋值法对干草产量、CP、WSC、EE、NDF和矿物元素含量进行综合评价,发现成熟期综合评价值最高,建议兰箭1号在高山草原地区的最佳刈割期为成熟期。
The field trial was conducted in Xiahe Region of Gansu Province. A randomized complete block design was applied to investigate the optimal cutting date of Lanjian No. 1. Sampling was made during the periods of squaring,flowering,podding and mature to measure the content of crude protein（ CP）,water soluble carbohydrate（ WSC）,crude fat（ CF）,neutral detergent fiber（ NDF）,mineral elements and dry matter yield. The result showed that CP contents all reached the first level of the American forage standard. The content of CP was the highest while WSC,CF and NDF were of the medium level during the mature period. Mineral elements P,K,Na,Mg and Zn in Lanjian No. 1 could satisfy the basic needs of livestock on alpine grassland. Grey relational analysis and weight assignment method were adopted for the comprehensive evaluation of dry matter yield,CP,WSC,CF,NDF and mineral elements levels. It was found that comprehensive evaluation index was the highest in the mature period. Thus,the optimal cutting date of Lanjian No. 1 should be mature period.
出处
《草业科学》
CAS
CSCD
北大核心
2015年第10期1653-1659,共7页
Pratacultural Science
基金
国家重点基础研究发展计划(2014CB138703)
草地农业生态系统国家重点实验室开放基金(SKLGAE2014010)
陕西省科学院科技计划项目(2010K-07
2013K-19)
关键词
箭筈豌豆
兰箭1号
夏河地区
刈割期
综合评价
common vetch
Lanjian No.1
Xiahe Region
cutting date
comprehensive analysis
