北方农业学报2025，Vol.53Issue(3)：26-34,9.DOI:10.12190/j.issn.2096-1197.2025.03.03
施氮与根茬还田对大麦产量、品质及土壤养分的影响
Effects of nitrogen application and stubble returning on barley yield,quality and soil nutrients
摘要
Abstract
[Objective]To investigate the effects of different nitrogen application rates and stubble returning on barley yield,quality,and soil nutrients.[Methods]Using the barley variety Neinongke Forage Barley No.1 as the experimental material,three nitrogen application levels were set:0 kg/hm2(N0),75 kg/hm2(N1),and 150 kg/hm2(N2).For each nitrogen level,two treatments were designed:stubble returning(S)and no stubble returning(N).The effects of the treatments on subsequent barley yield,quality,and soil nutrients were analyzed.[Results]Under stubble returning,the fresh grass yield of the N2 treatment increased significantly by 32.60%compared with the N0 treatment(P<0.05).For both stubble returning and no stubble returning treatments,the dry hay yield followed the order N2>N0>N1,with no significant differences(P>0.05).After stubble returning,the crude protein content of the N2 and N1 treatments increased significantly by 1.10 and 0.95 percentage points respectively,compared with the N0 treatment(P<0.05);the relative feed value(RFV)of the N2 treatment was 4.67 and 13.50 percentage points higher than that of the N1 and N0 treatments,respectively;differences in crude protein content,crude fat content,and RFV between the N1 and N2 treatments were not significant(P>0.05).After stubble returning,the soil total nitrogen content of the N1 treatment was significantly higher than that of the N0 treatment by 23.78%(P<0.05),while the alkali-hydrolyzable nitrogen content of the N1 and N2 treatments increased significantly by 22.69%and 26.53%,respectively,compared with the N0 treatment(P<0.05),with no significant difference between the N1 and N2 treatments(P>0.05);the soil total phosphorus content of the N2 treatment increased significantly by 30.38%and 53.78%compared with the N1 and N0 treatments,respectively(P<0.05);the soil available phosphorus content followed the order N2>N1>N0,with no significant differences(P>0.05);the soil total potassium content followed the order N2>N1>N0,with the N2 treatment significantly higher than the N0 treatment by 37.28%(P<0.05),but no significant difference between the N2 and N1 treatments(P>0.05);the available potassium content in the N1 treatment was significantly higher than in the N0 and N2 treatments(P<0.05);the soil organic matter content in the N1 and N2 treatments increased significantly by 20.05%and 23.04%,respectively,compared with the N0 treatment(P<0.05).Fresh grass yield was significantly and positively correlated with soil total phosphorus content and total potassium content(P<0.05),while dry hay yield was significantly and positively correlated with soil total nitrogen content and total phosphorus content(P<0.05).[Conclusion]Considering the cost of nitrogen fertilizer,stubble returning with a nitrogen application rate of 75 kg/hm2 effectively enhanced barley yield and quality and improved soil physicochemical properties.关键词
施氮量/根茬还田/大麦/产量/品质/土壤养分Key words
Nitrogen application rate/Stubble returning/Barley/Yield/Quality/Soil nutrients分类
农业科技引用本文复制引用
渠佳慧,巴图,徐广祥,陈瑞英,吕二锁,马宇,李涛,王丽,刘志萍..施氮与根茬还田对大麦产量、品质及土壤养分的影响[J].北方农业学报,2025,53(3):26-34,9.基金项目
国家重点研发计划项目(2022YFD1601205) （2022YFD1601205）
2023年度引进人才科研启动支持项目(RO2400002408) （RO2400002408）
