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Enhanced nitrogen management strategies for winter wheat production in the Canadian prairies

机译：加拿大大草原中冬小麦生产的增强氮管理策略

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摘要

To address knowledge gaps around enhanced efficiency urea fertilizer efficacy for nitrogen (N) management, a study was designed to improve integrated nutrient management systems for western Canadian winter wheat producers. Three factors were included in Experiment 1: (i) urea type [urea, urea + urease inhibitor-Agrotain (R); urea + urease and nitrification inhibitor-SuperU (R), polymer-coated urea-Environmentally Smart Nitrogen (R) (ESN (R)), and urea ammonium nitrate (UAN)], (ii) application method (side-band vs. spring-broadcast vs. 50% side-band: 50% spring-broadcast), and (iii) cultivar (AC Radiant hard red winter wheat vs. CDC Ptarmigan soft white winter wheat). The Agrotain (R) and CDC Ptarmigan treatments were removed in Experiment 2 to allow for additional application methods: (i) fall side-band, (ii) 50% side-band - 50% late fall broadcast, (iii) 50% side-band-50% early spring broadcast, (iv) 50% side-band-50% mid-spring broadcast, and (v) 50% side-band-50% late spring broadcast. CDC Ptarmigan produced superior grain yield and N utilization over AC Radiant. Grain yield and protein content were influenced by N form and application method. Split applications of N usually provided the maximum yield and protein, particularly with Agrotain (R) or SuperU (R). Conversely, the UAN and ESN (R) forms, when all broadcast in spring, all side-banded in fall, or with late fall broadcasting, performed poorly. An exception to the poor fall-application results was the SuperU (R) treatments, which produced similar yield to the highest-yielding treatments. The results suggest that split applications of N might be most efficient for yield and protein optimization when combined with an enhanced efficiency urea product, particularly with urease or urease + nitrification inhibitors, and if the majority of N is applied in spring.
机译：为了满足知识差距，围绕增强效率的尿素肥料疗效进行氮气（n）管理，旨在改善西加拿大冬小麦生产商的综合营养管理系统。实验1：（i）尿素型[尿素，尿素+脲酶抑制剂 - 农毒素（尿素）;尿素+脲酶和硝化抑制剂 - 超级（R），聚合物涂覆的尿素 - 环境智能氮（R）（ESN（R））和尿素硝酸铵（UAN）]，（II）施用方法（侧带与春播广播与50％侧面：50％春播），（iii）品种（交流辐射硬红色冬小麦与CDC Ptarmigan软白色冬小麦）。在实验2中除去猴油（R）和CDC Ptarmigan治疗，以允许额外的施用方法：（i）落侧带，（ii）50％侧带 - 50％晚期播出，（iii）50％ - 带-50％早春广播，（iv）50％边带50％中间春季广播，（v）50％侧带50％延迟春季广播。 CDC PTarmigan通过AC辐射产生优异的谷物产量和N利用。谷物产量和蛋白质含量受到N形和施用方法的影响。 n的分裂应用通常提供最大产量和蛋白质，特别是与猴像（R）或Superu（R）的蛋白质。相反，当春季的所有广播时，uan和esn（r）形式，秋季的所有侧面或晚落在秋季广播时，表现不佳。贫困秋季申请结果的例外是Superu（R）治疗，它产生了类似的产量与最高产量的处理。结果表明，当与增强的效率尿素产物结合时，N的分裂应用对于产量和蛋白质优化，特别是尿素或脲酶+硝化抑制剂，以及春季大部分N施用。

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  • 来源
    《Canadian Journal of Plant Science》 |2018年第3期|共20页
  • 作者

    Beres B. L.; Graf R. J.; Irvine R. B.; ODonovan J. T.; Harker K. N.; Johnson E. N.; Brandt S.; Hao X.; Thomas B. W.; Turkington T. K.; Stevenson F. C.;

  • 作者单位

    Agr &

    Agri Food Canada Lethbridge Res &

    Dev Ctr 5403 1st Ave South Lethbridge AB T1J 4B1 Canada;

    Agr &

    Agri Food Canada Lethbridge Res &

    Dev Ctr 5403 1st Ave South Lethbridge AB T1J 4B1 Canada;

    Agr &

    Agri Food Canada Brandon Res &

    Dev Ctr Box 1000A RR 3 Brandon MB R7A 5Y3 Canada;

    Agr &

    Agri Food Canada Lacombe Res &

    Dev Ctr Lacombe AB T4L 1W1 Canada;

    Agr &

    Agri Food Canada Lacombe Res &

    Dev Ctr Lacombe AB T4L 1W1 Canada;

    Univ Saskatchewan Dept Plant Sci Saskatoon SK S7N 5A8 Canada;

    Northeast Agr Res Fdn Melfort SK S0E 1A0 Canada;

    Agr &

    Agri Food Canada Lethbridge Res &

    Dev Ctr 5403 1st Ave South Lethbridge AB T1J 4B1 Canada;

    Agr &

    Agri Food Canada Lethbridge Res &

    Dev Ctr 5403 1st Ave South Lethbridge AB T1J 4B1 Canada;

    Agr &

    Agri Food Canada Lacombe Res &

    Dev Ctr Lacombe AB T4L 1W1 Canada;

    142 Rogers Rd Saskatoon SK S7N 3T6 Canada;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物学;
  • 关键词

    nitrogen; grain protein; Agrotain; SuperU (R); ESN (R); UAN (R); nitrogen recovery;

    机译：氮气;谷物蛋白质;农村;Superu（R）;ESN（R）;UAN（R）;氮恢复;

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