农业环境科学学报2025，Vol.44Issue(2)：420-427,8.DOI:10.11654/jaes.2024-0166
稳定性氮肥减施对滴灌玉米产量、氮肥利用率及土壤无机氮残留的影响
Effects of stable nitrogen fertilizer reduction on corn yield,nitrogen use efficiency and soil inorganic nitrogen residue under drip irrigation
摘要
Abstract
To investigate the differences of fertilizer efficiency and utilization ratio between stable nitrogen fertilizer and common nitrogen fertilizer on corn under drip irrigation in Xinjiang,and to provide technical support for reducing fertilizer application and increasing efficiency and high-quality development of corn fertilizer.Field trials were carried out in Qitai County in northern Xinjiang and Yutian County in southern Xinjiang using the combined methods of sampling,laboratory analysis and biostatistics.We set up 6 treatments,i.e.,No nitrogen fertilizer(N0);Conventional fertilization(FP);Recommended amount of stable nitrogen fertilizer(NF),reducing nitrogen by 10%compared to FP;Stable nitrogen fertilizer reduction treatment(90%NF),reducing nitrogen by 19%compared to FP;Stable nitrogen fertilizer reduction treatment(80%NF),reducing nitrogen by 28%compared to FP;Stable nitrogen fertilizer reduction treatment(70%NF),reducing nitrogen by 37%compared to FP.NF treatment significantly increased maize yield compared to the FP treatment,with yield increased by 7.6%(Qitai County)and 11.6%(Yutian County),nitrogen use efficiency was increased by 3.2 percentage points(Qitai County)and 7.5 percentage points(Yutian County),significantly reduced soil nitrogen residue and increased incomes.The yield of 90%NF treatment was equivalent to that of FP treatment,but the nitrogen use efficiency was increased by 6.3 percentage points(Qitai County)and 9.2 percentage points(Yutian County),significantly reduced soil nitrogen residue and increased incomes by 1 143 yuan·hm-2(Yutian County).In Qitai County,80%NF treatment significantly reduced corn yield and economic benefits,while in Yutian County,80%NF treatment had the same yield as the FP treatment,but reduced the economic benefits.70%NF treatment significantly reduced corn yield and economic benefits at both sites.In Qitai County,applying stable nitrogen fertilizer with reducing conventional nitrogen application by 10%can increase corn yield,increase nitrogen use efficiency,and net incomes by 7.6%,3.2 percentage points,and 1 996 yuan·hm-2,respectively;and significantly reduce soil nitrogen residue.In Yutian County,applying stable nitrogen fertilizer with reducing conventional nitrogen application by 10%-19%can still increase corn yield,nitrogen use efficiency,and net income increase by 5.8%-11.6%,7.5-9.2 percentage points,and 980-2 378 yuan·hm-2,respectively;and reduce soil nitrogen residue at the same time.关键词
稳定性氮肥/玉米/产量/氮肥利用率/土壤无机氮残留Key words
stable nitrogen fertilizer/corn/yield/nitrogen use efficiency/soil inorganic nitrogen residue分类
农业科技引用本文复制引用
唐亚莉,段婧婧,藏旭龙,赖宁,李永福,信会男,李娜,吕彩霞,李青军..稳定性氮肥减施对滴灌玉米产量、氮肥利用率及土壤无机氮残留的影响[J].农业环境科学学报,2025,44(2):420-427,8.基金项目
农业科技创新稳定支持项目(xjnkywdzc-2023002) Project of Fund for Stable Support to Agricultural Sci-Tech Renovation(xjnkywdzc-2023002) （xjnkywdzc-2023002）
