饲料研究2025，Vol.48Issue(5)：144-148,5.DOI:10.13557/j.cnki.issn1002-2813.2025.05.025
不同施氮量对黑麦草生产性能和营养品质的影响
Effects of different nitrogen application rates on production performance and nutritional quality of ryegrass
摘要
Abstract
The study aimed to investigate the effects of different nitrogen application rates on the production performance and nutritional quality of ryegrass.Using Dongmu 70 as the experimental material,a field trial was conducted in Chengde,Hebei Province.The experiment included five groups,with five replicates each,with nitrogen levels set at 0(control group),100(T1 group),150(T2 group),200(T3 group),and 250 kg/hm²(T4 group).The results showed that in 2022,the leaf number of the T3 group was significantly higher than that of the control,T1,and T4 groups(P<0.05),the plant height of the T2 and T3 groups was significantly higher than that of the control and T1 groups(P<0.05),and the branch number and leaf area of the T2,T3,and T4 groups were significantly higher than those of the control group(P<0.05).In 2023,the leaf number of the T3 group was significantly higher than that of the control and T1 groups(P<0.05),the plant height of the T2 and T3 groups was significantly higher than that of the control group(P<0.05),and the branch number and leaf area of the T2,T3,and T4 groups were significantly higher than those of the control group(P<0.05).In both 2022 and 2023,the fresh grass yield of the T2,T3,and T4 groups was significantly higher than that of the control group(P<0.05),and the leaf-to-stem ratio of the T2 and T3 groups was significantly higher than that of the control group(P<0.05).In 2022,the hay yield of the T2,T3,and T4 groups was significantly higher than that of the control group(P<0.05).In 2023,the hay yield of the T3 and T4 groups was significantly higher than that of the control group(P<0.05).In both 2022 and 2023,the crude protein(CP)content and relative feed value(RFV)of the T3 group were significantly higher than those of the control group(P<0.05),while the neutral detergent fiber(NDF)and acid detergent fiber(ADF)concentrations were significantly lower than those of the control group(P<0.05).The study indicates that the nitrogen application rate has significant effects on agronomic traits,yield and nutritional quality of ryegrass.When the nitrogen application rate is 200 kg/hm2,the yield and nutritional quality of ryegrass are better.关键词
施氮量/黑麦草/生产性能/营养品质Key words
nitrogen application rate/ryegrass/production performance/nutritional quality分类
农业科技引用本文复制引用
徐玥,邱青璐,田晓..不同施氮量对黑麦草生产性能和营养品质的影响[J].饲料研究,2025,48(5):144-148,5.基金项目
承德市绿色食品产业研究院建设项目(项目编号:202205B088) （项目编号:202205B088）
河北省高等学校人文社会科学研究项目(青年基金项目)(项目编号:SQ2023099) （青年基金项目）
