摘要
试验旨在探究土默川平原苜蓿的最佳刈割时期,为苜蓿规模化生产应用提供参考.试验设置现蕾期、初花期和盛花期3个处理,每个处理3次重复.测定了 土默川平原紫花苜蓿(WL319HQ)不同刈割时期的产量、营养品质和经济效益指标.结果表明:苜蓿在现蕾期刈割,全年可收获干草13 011.60 kg/hm2,其粗蛋白(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)含量分别为20.69％DM、36.91％DM、26.64％DM,相对饲喂价值(RFV)为172.11,收益为16 131.34～20 034.83元/hm2.在初花期刈割,全年可收获干草12 829.81 kg/hm2,其CP、NDF、ADF含量分别为 18.55％DM、41.03％DM、30.70％DM,RFV 为 147.78,收益为 11 791.53～15 640.47元/hm2.在盛花期刈割,全年可收获干草14 444.64 kg/hm2,其CP、NDF、ADF含量分别为16.80％DM、45.82％DM、35.57％DM、RFV为124.40,收益低于9 889.27元/hm2.研究表明,土默川平原苜蓿在现蕾期刈割的营养价值和经济效益更高.
Abstract
The experiment aims to explore the optimal harvesting time for alfalfa in the Tumochuan Plain,providing scientific reference for the large-scale production and application of alfalfa.The experiment was set up with three treatments:bud initiation,early flowering,and full bloom,with each treatment replicated three times.The experiment measure the yield traits,nutritional quality,and economic benefits of alfalfa(WL319HQ)at different harvesting times in the Tumochuan Plain.The results showed that when alfalfa was harvested at the bud stage,the annual dry hay yield was 13 011.60 kg/hm2.The contentrations of CP,NDF,and ADF were 20.69％DM,36.91％DM,and 26.64％DM,respectively,with an RFV of 172.11,and the income ranged from 16 131.34 to 20 034.83 yuan/hm2.When harvested at the early flowering stage,the annual dry hay yield was 12 829.81 kg/hm2,with CP,NDF,and ADF contentrations of 18.55％DM,41.03％DM,and 30.70％DM,respectively,an RFV of 147.78,and the income ranged from 11 791.53 to 15,640.47 yuan/hm2.When harvested at the full flowering stage,the annual dry hay yield was 14 444.64 kg/hm2,with CP,NDF,and ADF contentations of 16.80％DM,45.82％DM,and 35.57％DM,respectively,an RFV of 124.40,and the income was less than 9 889.27 yuan/hm2.The research indicates that alfalfa harvested at the bud stage on the Tumochuan Plain has higher nutritional value and economic benefits.
基金项目
内蒙古自治区科技重大专项(2023JBGS0014-04)
科技创新2030—重大项目(2022ZD04012)
国家乳业技术创新中心项目(2022-科研攻关-1)
内蒙古自治区"揭榜挂帅"项目(2022JBGS001602)
农业重大技术协同推广计划试点项目()
中国农业科学院奶牛绿色养殖技术集成创新(CAAS-XTCX2016011-01-02)
中国农业科学院创新工程(CAAS-ASTIP-IGR 2016-02)
维普
万方数据