摘要
为探究不同缓释氮肥施氮量对春小麦产量的影响,设置不施肥料、施用尿素施氮量240.0 kg·hm^(-2)和不同缓释氮肥施氮量240.0 kg·hm^(-2)、192.0 kg·hm^(-2)、168.0 kg·hm^(-2)共5种处理,通过研究不同缓释氮肥施氮量对小麦生长发育及产量和经济效益的影响,以明确最佳缓释氮肥用量。结果表明,在施氮量相等时,缓释氮肥较施用尿素能显著增加小麦产量,增产9.0%,主要原因是增加了收获穗数和千粒重;在缓释氮肥施氮减量时,产量随之降低,纯收益也随之降低;当缓释氮肥施氮量为240.0 kg·hm^(-2)时,纯收益最大,达14494.5元·hm^(-2)。综合小麦产量、收益等因素,推荐缓释氮肥施氮量240.0 kg·hm^(-2)为最佳施氮量。
To explore the effects of different nitrogen fertilizer application rates of slow-release nitrogen on the yield of spring wheat,five treatments were set up:no fertilizer application,application of urea for nitrogen application rate of 240.0 kg·hm^(-2),and slow-release nitrogen application rates of 240.0 kg·hm^(-2),192.0 kg·hm^(-2),and 168.0 kg·hm^(-2).By studying the effects of different slow-release nitrogen fertilizer application rates on the growth,development,yield and economic benefits of wheat,the optimal application rate of slow-release nitrogen fertilizer was determined.The results showed that when the nitrogen application rates were the same,slow-release nitrogen fertilizer could significantly increase the yield of wheat by 9.0%compared with the application of urea,mainly due to an increase in the number of harvested ears and the grain weight per ear.When the application rate of slow-release nitrogen fertilizer was reduced,the yield decreased,and so did the net income.When the application rate of slow-release nitrogen fertilizer was 240.0 kg·hm^(-2),the net income was the highest,reaching 14494.5 yuan·hm^(-2).Considering factors such as wheat yield and income,it is recommended that the optimal nitrogen application rate for slow-release nitrogen fertilizer be 240.0 kg·hm^(-2).
作者
马婧
张甜笑
申昊
王生明
陈嘉
樊明
Ma Jing;Zhang Tianxiao;Shen Hao;Wang Shengming;Chen Jia;Fan Ming(Yongning County Agricultural Technology Extension Service Center,Yongning,Ningxia 750105;Crops Institute,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002)
出处
《宁夏农林科技》
2026年第2期7-11,共5页
Journal of Ningxia Agriculture and Forestry Science and Technology
基金
宁夏农业高质量发展和生态保护科技创新示范项目(NGSB-2021-13)
宁夏回族自治区重点研发计划项目(2019BBF02020,2022BBF02039)
2022年宁夏青年拔尖人才培养项目。
关键词
春小麦
缓释氮肥
施氮量
产量
经济效益
Spring wheat
Slow-release nitrogen fertilizer
Nitrogen application rate
Yield
Economic benefits
