饲料研究2024，Vol.47Issue(5)：117-121,5.DOI:10.13557/j.cnki.issn1002-2813.2024.05.022
优良紫花苜蓿品种骑士t在庆阳市的适应性研究
Study on adaptability of high-quality alfalfa variety Knight T in Qingyang
摘要
Abstract
The experiment aimed to explore the comprehensive production capacity and adaptability of the high-quality alfalfa variety Knight T in Qingyang City.The experiment used a randomized complete block design to analyze the field production traits,growth vigor,fresh grass yield,nutritional components,and forage value of the introduced variety Knight T,the locally cultivated variety Gan Nong 5,and the Longdong alfalfa.Each variety was tested three times.The results showed that different alfalfa varieties exhibited consistent growth vigor curves,but the growth rates varied at different periods for the same variety.In the planting year(spring sowing),the yield of all three alfalfa varieties was low,but they exhibited superior quality and high nutritional value.The crude protein(CP)content exceeded 20％during the initial flowering period,acid detergent fiber(ADF)content ranged from 28％to 30％,neutral detergent fiber(NDF)content ranged from 35.0％to 38.5％,and the relative forage value(RFV)ranged from 161 to 172.The overwintering rate of Knight T in the planting year was 100％,indicating good cold resistance.In the following year,the first cutting plant height reached 105.24 cm,significantly higher than Gan Nong 5 and Longdong alfalfa(P＜0.05).The stem thickness was 3.46 mm,significantly lower than Gan Nong 5(P＜0.05).The average fresh grass yield reached 1 235.06 kg/667 m2.Gan Nong 5 exhibited good drought resistance with a summer survival rate of 73.38％,abundant branching,and significantly higher fresh grass yield than Longdong alfalfa(P＜0.05).Although Knight T had low fatty acid content,its forage value was high,with a fresh-to-dry ratio of 2.96.The crude protein and phosphorus content reached 22.6％and 0.3％,respectively.ADF and NDF concentrations were 28.8％and 35.97％,respectively.The RFV was 172,relative forage quality(RFQ)was 170,and total digestible nutrients(TDN)content was 60％.The study indicates that Knight T is suitablefor cultivation in Qingyang City and other areas with similar climates.关键词
紫花苜蓿/骑士t/生长特性/庆阳市Key words
alfalfa/Knight T/growth characteristics/Qingyang City分类
农业科技引用本文复制引用
张金霞,窦晓利,耿智广,梁万鹏,韩庆辉..优良紫花苜蓿品种骑士t在庆阳市的适应性研究[J].饲料研究,2024,47(5):117-121,5.基金项目
甘肃省科技计划重点研发项目(项目编号:20YF3NA024) （项目编号:20YF3NA024）
甘肃省农业农村厅2021年现代丝路寒旱农业科技支撑项目子课题"草畜生态循环生产技术示范(项目编号:GSLK-2021-5)" （项目编号:GSLK-2021-5）
2022年高产优质苜蓿基地建设项目"高产优质苜蓿栽培与加工利用技术示范" （）
甘肃省畜牧兽医局2023年粮改饲项目子课题"寒旱区粮改饲产能提升技术与模式研究示范(项目编号:甘牧医[2023]21号)" （项目编号:甘牧医[2023]21号）
