饲料研究2025，Vol.48Issue(1)：180-183,4.DOI:10.13557/j.cnki.issn1002-2813.2025.01.031
不同施氮量对苜蓿生产性能及饲用品质的影响
Effects of different nitrogen application rates on production performance and feed quality of alfalfa
摘要
Abstract
The experiment aimed to investigate the effects of different nitrogen application rates on the production performance and feed quality of GanNong No.7 alfalfa(Medicago sativa L.).A single-factor experimental design was employed,with GanNong No.7 alfalfa as the subject of study.Five treatment groups were set up in field plots,with three replicates per group.These were the control group(N0 group),N1 group,N2 group,N3 group,and N4 group,with nitrogen levels of 0,50,100,150,and 200 kg/hm2,respectively.The results showed that there were no significant differences in stem thickness,leaf length,leaf width,survival rate,and overwintering survival rate of alfalfa among different nitrogen application rates(P＞0.05).Compared to the control group,the plant height of alfalfa in the N2 and N3 groups was significantly increased(P＜0.05).The fresh forage yield of alfalfa in the N2,N3,and N4 groups was significantly increased(P＜0.05).The dry hay yield of alfalfa in the N1 to N4 groups was significantly increased(P＜0.05),and the dry hay yield of the N2 and N3 groups was higher than that of the N1 and N4 groups(P＜0.05).Compared to the control group,the crude protein content of alfalfa in the N2,N3,and N4 groups was significantly increased(P＜0.05),the neutral detergent fiber content of alfalfa in the N2 and N3 groups was significantly reduced(P＜0.05),and the relative feed value of alfalfa in the N1 to N4 groups was significantly improved(P＜0.05).There were no significant differences in the content of mineral elements such as calcium,phosphorus,and potassium in alfalfa among different nitrogen application rates(P＞0.05).The study indicates that different nitrogen application rates have a significant impact on the production performance and feed quality of alfalfa,with the application rate of 100 to 150 kg/hm2 being the most effective.关键词
不同施氮量/苜蓿/产量/饲用品质Key words
different nitrogen application rates/alfalfa/yield/feed quality分类
农业科技引用本文复制引用
李永德,刘兴成,张建全,孙学保,刘金蓉,王文庆,芦娟..不同施氮量对苜蓿生产性能及饲用品质的影响[J].饲料研究,2025,48(1):180-183,4.基金项目
武威市科技重点研发计划(项目编号:WW23A01YF011) （项目编号:WW23A01YF011）
