Effect of Mixed Applying Controlled-release Urea and Conventional Urea on Yield and Nitrogen Utilization of Spring Maize in Rain Fed Region

LIANG Yi; KANG Jianhong; ZHU Rong; HE Wenshou; DAI Xiaohua

doi:10.13870/j.cnki.stbcxb.2017.06.037

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Effect of Mixed Applying Controlled-release Urea and Conventional Urea on Yield and Nitrogen Utilization of Spring Maize in Rain Fed Region

更新时间：2025-03-12

- Effect of Mixed Applying Controlled-release Urea and Conventional Urea on Yield and Nitrogen Utilization of Spring Maize in Rain Fed Region
- Vol. 31, Issue 6, Pages: 237-241(2017)
- 作者机构：
  
  宁夏大学农学院,银川,750021
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.06.037
  CLC： S513;TQ441
- Published：2017
- 稿件说明：
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LIANG Yi, KANG Jianhong, ZHU Rong, et al. Effect of Mixed Applying Controlled-release Urea and Conventional Urea on Yield and Nitrogen Utilization of Spring Maize in Rain Fed Region[J]. 2017, 31(6): 237-241.
DOI：

LIANG Yi, KANG Jianhong, ZHU Rong, et al. Effect of Mixed Applying Controlled-release Urea and Conventional Urea on Yield and Nitrogen Utilization of Spring Maize in Rain Fed Region[J]. 2017, 31(6): 237-241. DOI： 10.13870/j.cnki.stbcxb.2017.06.037.

摘要

为明确宁夏南部雨养种植区玉米合理施氮方式及用量，完善高产高效栽培技术，为干旱半干旱地区玉米高产栽培提供理论与技术支持，以先玉698为试验材料，设置2个氮肥种类(控释尿素和常规尿素，纯氮量都为225 kg/hm2)和4个氮肥追施量及时期（T1常规尿素基施N150 kg/hm2+小口期追施N75 kg/hm2；T2控释尿素基施N150 kg/hm2+常规尿素基施N75 kg/hm2；T3控释尿素基施N75 kg/hm2+常规尿素基施N75 kg/hm2+小口期追施常规尿素N75 kg/hm2；T4控释尿素基施N225 kg/hm2），以不施氮肥为对照，比较研究不同处理对春玉米群体物质生产、氮素运移特性和产量的影响。结果表明，在施氮量相等条件下，控释尿素与普通尿素配合（T3）一次基施比习惯施肥（T1）显著增加了玉米的产量，产量增幅为12.63%，穗粒数的增加是玉米增产的主要原因。合理增加基肥中控释尿素比例能够显著增加玉米花后和全生育期干物质积累量，同时促进玉米营养器官和籽粒对氮的吸收累积。控释尿素基施有利于氮肥农学效率、氮肥利用率和氮肥贡献率的提高，其中以T3处理最好，氮肥农学利用率和氮肥对产量的贡献率分别比T2和T4高52.12%，22.96%和35.39%，20.53%。因此，建议在宁南山区玉米高产施肥管理中以控释尿素（全部氮肥量的2/3）与常规尿素（全部氮肥量的1/3）全部基施为宜。

Abstract

The aims of this study were evaluating the impact of mixed applying controlled-release urea and conventional urea on matter accumulation

nitrogen uptake and migration

and grain yield of spring maize

and improving the high yield and high efficiency cultivation techniques in southern Ningxia area. And this study could provide theoretical and technical reference to scientific nitrogen management techniques for spring maize in arid and semi-arid rainfall-fed region. Xianyu698 taken as experiment subjects were grown in controlled environments with two nitrogenous fertilizers (controlled-release urea (CRU ) and conventional urea ( U)) in four treatments (T1: applying U as basal fertilizer by N150 kg/hm2 + U topdressing at V12 by N75 kg/hm2; T2: CRU as basal N75 kg/hm2 + U as basal N75 kg/hm2+ U topdressing at V12 N75 kg/hm2; T3: CRU as basal N 150 kg/hm2+U as basal N 75 kg/hm2; T4: CRU as basal N 225 kg/hm2). The treatment without applying nitrogen fertilizer was CK. The results showed that when applying the same amount of nitrogen

compared to conventional urea treatment (T1)

reasonable mixed application of controlled-release urea and urea as basal fertilizer (T3) could significantly increase maize yield by 12.63%

and this were mainly due to extremely enhancement of grain number per spike. Reasonable increasing the ratio of controlled-release urea in basal fertilizer could promote the accumulation of dry matter at post-anthesis and the whole growth period

and increase the absorption and accumulation of nitrogen in vegetative organs and grains of maize. The study also found that applying controlled-release urea was favorable to enhance nitrogen agronomic efficiency

nitrogen use efficiency and fertilizer contribution ratio

and the effect of T3 was the best. The nitrogen agronomic efficiency and fertilizer contribution ratio of T3 were 52.12% and 22.96%

35.39% and 20.53% higher than those of T2 and T4

respectively. This study indicated that it was appropriate to applying reasonable mixed controlled-release urea (two-thirds of the total amount of nitrogen fertilizer) and conventional urea (one-third of the total amount of nitrogen fertilizer) as basal fertilizer.

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WANG Ji-qing1,LIU She-ping1,HAN Bao-wen2 (1.College of Agriculture and Forestry,Hebei North University,Zhangjiakou,Hebei 075000,2.Institute ofAgricultural Resources and Environment,Hebei Academy of Agriculture and Forestry Sciences,,)

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