饲料研究2025，Vol.48Issue(10)：140-146,7.DOI:10.13557/j.cnki.issn1002-2813.2025.10.025
灌水、密度和施氮对河西地区饲用玉米农艺性状、产量和水氮利用效率的影响
Effects of irrigation,density,and nitrogen application on agronomic traits,yield,and water-nitrogen use efficiency of forage maize in Hexi Region
摘要
Abstract
The experiment aimed to explore the optimal irrigation,planting density,and nitrogen application levels for forage maize in Hexi Region.It involves three irrigation levels(W1:2 000 m3/hm2,W2:4 000 m3/hm2,W3:6 000 m3/hm2).Under each,there are three planting densities(D1:67 500 plants/hm2,D2:82 500 plants/hm2,D3:97 500 plants/hm2),and under each density,three nitrogen application levels(N1:0 kg/hm2,N2:240 kg/hm2,N3:360 kg/hm2),determined the agronomic traits,yield and water and nitrogen utilization efficiency of forage maize.The results showed that irrigation,density,and nitrogen application significantly affected agronomic traits,yield,and water-nitrogen use efficiency(P<0.05).Two-factor and three-factor interactions also significantly impacted plant height and nitrogen agronomic efficiency(NAE)(P<0.05).The interaction of irrigation and density significantly influenced fresh and dry grass yields,nitrogen partial factor productivity(NPFP),and nitrogen use efficiency(NUE)(P<0.05).Irrigation and nitrogen application interaction significantly affected dry grass yield and NPFP(P<0.05).Density and nitrogen application interaction significantly impacted soil and plant analyzer development(SPAD),leaf area index(LAI),dry grass yield,water use efficiency(WUE),and NPFP(P<0.05).The study indicates that the W2D2N2 treatment recorded the highest grain and dry grass yields,nitrogen uptake,NAE,and NUE,along with relatively high WUE,indicating it is a suitable integrated management strategy for forage corn in Hexi Region.关键词
灌溉量/种植密度/施氮量/农艺性状/产量/水氮利用效率Key words
irrigation volume/planting density/nitrogen application rate/agronomic characters/yield/water-nitrogen use efficiency分类
农业科技引用本文复制引用
李阳,石薇,常生华,张程,贾倩民..灌水、密度和施氮对河西地区饲用玉米农艺性状、产量和水氮利用效率的影响[J].饲料研究,2025,48(10):140-146,7.基金项目
国家自然科学基金(项目编号:31901389) （项目编号:31901389）
临泽县重大科技攻关揭榜挂帅项目(项目编号:LZ2023JBGS02) （项目编号:LZ2023JBGS02）
