饲料研究2025，Vol.48Issue(2)：194-199,6.DOI:10.13557/j.cnki.issn1002-2813.2025.02.035
宁夏灌区秋播饲用小黑麦氮肥合理施用量研究
Study on rational nitrogen fertilizer application rate of autumn-sown forage triticale in Ningxia irrigation area
摘要
Abstract
The experiment aimed to investigate the rational nitrogen fertilizer application rate for autumn-sown forage triticale in the Ningxia irrigation area.A single-factor randomized block design was adopted,with five nitrogen(pure N)application treatments:N1(0 kg/hm2),N2(75 kg/hm2),N3(150 kg/hm2),N4(225 kg/hm2),and N5(300 kg/hm2),each replicated three times.Triticale was sown using a precision seeder on October 7,2021,and harvested on June 15,2022.The results showed that nitrogen application promoted aboveground growth and dry matter accumulation at different growth stages,with peak dry matter accumulation occurring at the flowering stage.Plant height and dry matter accumulation initially increased and then decreased with rising nitrogen application,with the N4 treatment performing best.Triticale exhibited the highest demand for nitrogen,followed by phosphorus and potassium.Phosphorus uptake in four plant organs also displayed an initial increase followed by a decrease with increasing nitrogen application,achieving optimal results under the N4 treatment.Both fresh and dry forage yields initially increased and then declined with higher nitrogen application,reaching maximum values under the N4 treatment that were significantly higher than other treatments(P＜0.05).Fertilizer effect equation simulations revealed that the maximum yield nitrogen application rate was 274.12 kg/hm2,while the optimal economic benefit application rate was 241.33 kg/hm2.This study indicates that the results can provide scientific references for local cultivation practices of autumn-sown forage triticale.关键词
宁夏灌区/秋播/饲用小黑麦/氮肥Key words
Ningxia irrigation area/autumn-sown/forage triticale/nitrogen fertilizer分类
农业科技引用本文复制引用
张晓娟,李雪雪,徐得甲,李小玉,马耀海,马花,孙权..宁夏灌区秋播饲用小黑麦氮肥合理施用量研究[J].饲料研究,2025,48(2):194-199,6.基金项目
宁夏自然科学基金资助项目(项目编号:2023AAC03441) （项目编号:2023AAC03441）
宁夏大学校地合作科技示范项目(项目编号:NXXDHZ202316) （项目编号:NXXDHZ202316）
