农学学报2025，Vol.15Issue(9)：44-49,6.
新型尿素对高产夏玉米产量及氮肥效率的影响
Effects of Novel Urea on Yield and Nitrogen Fertilizer Efficiency of High-yield Summer Maize
摘要
Abstract
To clarify the impact of novel urea on yield and the efficiency of nitrogen fertilizer in summer maize,and to provide theoretical basis and technical support for its large-scale promotion and application,treatments were set as followed:no nitrogen fertilizer application(T1),local farmers'habitual fertilization(T2,N 216 kg/hm2),conventional optimized fertilization(T3,N 210 kg/hm2),controlled release urea and humic acid urea in a 1:1 ratio(T4,N 210 kg/hm2),controlled release urea and humic acid urea in a 1:1 ratio with a 10%reduction of N for each(T5,N 168 kg/hm2),controlled release urea(T6,N 210 kg/hm2),and controlled release urea with a 20%reduction of nitrogen(T7,N 168 kg/hm2).The effects of different fertilization treatments on yield,nitrogen absorption and utilization,and soil available nitrogen of summer maize were studied.The results showed that the yield of summer maize from T3 to T7 increased by 13.89%to 18.04%compared to T1,with T5 showing the largest increase.Compared with T1 and T2,T3 to T7 all increased the aboveground nitrogen accumulation and soil available nitrogen content during the mature stage of summer maize,and T5 showed significant differences in aboveground nitrogen accumulation compared to T1 and T2(P＜0.05).In addition,the nitrogen fertilizer utilization rate of T5 was as high as 60.22%,and the nitrogen fertilizer partial productivity was 74.56 kg/kg.In conclusion,optimizing nitrogen application can promote the increase of summer maize yield.Under the experimental conditions,the 1:1 combination of controlled release urea and humic acid urea with a 10%reduction of nitrogen for each can be promoted and applied in the high-yield area of summer maize in northern Henan Province.关键词
控释尿素/腐植酸尿素/新型尿素/夏玉米/产量/养分积累量/氮肥效率Key words
controlled release urea/humic acid urea/novel urea/summer maize/yield/nutrient accumulation/nitrogen fertilizer efficiency分类
农业科技引用本文复制引用
邱凯莉,孟傲雪,杨启睿,耿赛男,王宜伦..新型尿素对高产夏玉米产量及氮肥效率的影响[J].农学学报,2025,15(9):44-49,6.基金项目
氮肥高效利用创新平台开放项目"基于配肥站'测配产供施'一体化模式构建与示范"(30802075). （30802075）
