湖南农业科学Issue(3)：38-44,7.DOI:10.16498/j.cnki.hnnykx.2026.003.007
控释氮肥减量对玉米养分吸收、氮肥利用率及产量的影响
Effect of Reducing Controlled-Release Nitrogen Fertilizer on Nutrient Uptake,Nitrogen Use Efficiency,and Yield of Maize
摘要
Abstract
On the basis of long-term nitrogen fertilizer monitoring experimental sites,this study used the maize variety'Zhengdan 958'as the material and designed six treatments:no nitrogen fertilizer(T1),urea at a conventional rate(T2),controlled-release nitrogen fertilizer at a conventional rate(T3),controlled-release nitrogen fertilizer reduced by 10%(T4),controlled-release nitrogen fertilizer reduced by 20%(T5),and controlled-release nitrogen fertilizer reduced by 30%(T6).The study aimed to investigate the effect of long-term reduced nitrogen application on maize yield,nutrient accumulation,and soil chemical properties.The results showed that reducing controlled-release nitrogen fertilizer by 10%-20%maintained high maize yields while significantly improving nitrogen use efficiency.Compared with the T1,T4 and T5 increased nitrogen partial productivity to 35.15 and 38.15 kg/kg,respectively,with nitrogen use efficiencies reaching 56.00%and 64.10%,yield increases of 137.60%and 142.00%,and no significant difference in yield compared with T3.Among the treatments,the T4 was more favorable for nitrogen and phosphorus accumulation in the plants,with the aboveground nitrogen and phosphorus accumulation reaching 3.43 and 0.62 g/plant,respectively.This treatment,while maintaining soil total nitrogen and alkali-hydrolyzable nitrogen significantly higher than the T1,effectively mitigated soil acidification.Therefore,it was recommended that conventional urea could be replaced with controlled-release urea and nitrogen application could be reduced by 10%-20%on this basis to achieve high maize yields,efficient nitrogen utilization,and sustainable agricultural production.关键词
玉米/缓控释肥/植株养分积累/氮肥利用率Key words
maize/controlled-release fertilizer/nutrient accumulation in plant/nitrogen use efficiency分类
农业科技引用本文复制引用
夏义翔,韩永亮,荣湘民,杨兰..控释氮肥减量对玉米养分吸收、氮肥利用率及产量的影响[J].湖南农业科学,2026,(3):38-44,7.基金项目
国家自然科学基金(32102476) （32102476）
