浙江农业科学 ›› 2026, Vol. 67 ›› Issue (4): 852-858.DOI: 10.16178/j.issn.0528-9017.20240941

• 粮食作物 • 上一篇    下一篇

控释氮肥掺混比例对夏玉米农艺性状和产量的影响

李婷婷1(), 沈彦辉1, 岳永相1, 倪维茜1, 石玉龙2, 郭武松1, 贾瑞峰1, 肖晨星1, 高璐阳1, 陈宏坤1()   

  1. 1.新洋丰农业科技股份有限公司,养分资源高效利用湖北省工程研究中心,湖北 荆门 448000
    2.中国农业科学院 农业环境与可持续发展研究所,北京 100081
  • 收稿日期:2024-12-10 出版日期:2026-04-11 发布日期:2026-04-17
  • 通讯作者: 陈宏坤
  • 作者简介:陈宏坤,E-mail:chenhk99@163.com
    李婷婷,主要从事新型肥料与作物栽培技术的研究与推广。E-mail:litt_df@163.com
  • 基金资助:
    国家重点研发计划(2022YFD1700603);湖北省重点研发计划(2023BBB147)

Effects of blend ratio of controlled⁃release urea and normal urea on agronomic traits and yield of summer maize

LI Tingting1(), SHEN Yanhui1, YUE Yongxiang1, NI Weiqian1, SHI Yulong2, GUO Wusong1, JIA Ruifeng1, XIAO Chenxing1, GAO Luyang1, CHEN Hongkun1()   

  1. 1.Xinyangfeng Agricultural Technology Co. ,Ltd. ,Hubei Provincial Engineering Research Center of Efficient Utilization of Nutrient Resources,Jingmen 448000,Hubei
    2.Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081
  • Received:2024-12-10 Online:2026-04-11 Published:2026-04-17
  • Contact: CHEN Hongkun

摘要:

为探讨玉米生产中控释尿素与普通尿素掺混的最佳比例,通过田间试验,研究不同控释尿素掺混比例(0、30%、50%、70%和100%)对夏玉米农艺性状和产量的影响。结果表明:控释尿素掺混比例为70%的处理能显著(p<0.05)增加茎粗、茎粗系数、行粒数、穗粒数、百粒重、产量、氮素偏生产力、土壤碱解氮含量和经济效益,其中,产量和纯收益较单施普通尿素分别显著提高17.08%和20.60%。控释尿素比例为71.2%时,理论产量最高,为9 510.02 kg·hm-2,经济效益为17 631.9元·hm-2。相关分析表明,土壤碱解氮含量、玉米茎粗、有效穗长、行粒数、穗行数、穗粒数和百粒重与产量成显著正相关。综上,控释尿素与普通尿素掺混可提高玉米生育后期土壤供氮能力,优化农艺性状,提高抗倒伏能力,最终提高产量和经济效益,最佳掺混比例为71.2%。

关键词: 夏玉米, 控释氮肥, 掺混比例, 产量

Abstract:

To explore the optimal blending ratio of controlled-release urea(CRU)and normal urea in maize production,a field experiment was conducted to investigate the effects of different CRU blending ratios(0,30%,50%,70%,and 100%)on the agronomic traits and yield of summer maize. The results showed that the treatment with 70% CRU significantly (p<0.05) increased stem diameter,stem diameter coefficient,kernels per row,kernels per ear,100-kernel weight,yield, nitrogen partial factor productivity,soil alkali-hydrolyzable nitrogen content,and economic benefits. Among these,the yield and net profit increased significantly by 17.08% and 20.60%,respectively,compared with the normal urea alone treatment. When the CRU blending ratio reached 71.2%,the theoretical yield peaked at 9 510.02 kg·hm-2,with an economic benefit of 17 631.9 yuan?hm-2. Correlation analysis indicated that soil alkali-hydrolyzable nitrogen content,stem diameter,effective ear length,kernels per row,rows per ear,kernels per ear,and 100-kernel weight were all significantly positively correlated with yield. In conclusion,blending CRU with normal urea enhanced soil nitrogen supply capacity during the later growth stages of maize,optimized agronomic traits,improved maize resistance to downfall,and ultimately increased yield and economic benefits,with an optimal blending ratio of 71.2%.

Key words: summer maize, controlled-release nitrogen fertilizer, blending ratio, yield

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