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The Comparison of Different Fertilizer Technologies on Nitrogen Leaching Losses and Nitrogen Use Efficiency in Rice Production——Taking Ningxia Irrigation Region as an Example

Journal of agricultural resources and environment, 2015-01, Vol.32 (2), p.175 [Peer Reviewed Journal]

2015. This work is licensed under http://creativecommons.org/licenses/by-nc/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2095-6819 ;EISSN: 2095-6819 ;DOI: 10.13254/j.jare.2014.0334

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  • Title:
    The Comparison of Different Fertilizer Technologies on Nitrogen Leaching Losses and Nitrogen Use Efficiency in Rice Production——Taking Ningxia Irrigation Region as an Example
  • Author: Ai-Ping, Zhang ; Gao, Ji ; Ru-Liang, Liu ; Chen, Zhe ; Shi-Qi, Yang ; Zheng-Li, Yang ; Qing-Wen, Zhang
  • Subjects: Agricultural practices ; Agricultural production ; Agriculture ; Alluvial soils ; Anthropogenic factors ; Controlled release ; Crop yield ; Crops ; Ecosystems ; Efficiency ; Environmental effects ; Environmental management ; Fertilizer application ; Fertilizers ; Flooding ; Food production ; Grain ; Irrigation ; Irrigation systems ; Leaching ; Nitrogen ; Rice ; Rice fields ; Rivers ; Science ; Seeding ; Seedlings ; Soil fertility ; Soil sciences ; Urea ; Wheat
  • Is Part Of: Journal of agricultural resources and environment, 2015-01, Vol.32 (2), p.175
  • Description: 过量施肥及盲目灌溉导致宁夏引黄灌区水稻种植中氮素淋失严重,氮肥利用率低下.探索能够在保障水稻产量前提下减少氮素淋失、提高氮素利用率的环保型施肥技术是该区域实现农业可持续发展的现实需求.本研究在前期研究的基础上,就不同施肥技术对灌区水稻生育期内氮素淋失、氮素利用率及水稻产量的影响效果进行比对,旨在为后续工作中技术筛选及推广提供依据.试验共设置4个处理,分别是(1)无肥对照(CK):不施氮肥 (2)常规施肥(FP):施用氮肥300 kg N·hm-2, 60%作为基肥,分蘖和孕穗期各追肥20% (3)侧条施肥(SD):施用水稻专用控释肥120 kg N·hm-2,水稻插秧时将肥料一次性施入 (4)育苗箱全量施肥(NB):施用水稻专用控释肥,用量为120 kg N·hm-2,育秧时一次性全量施入育秧盘.结果表明,采用SD和NB在氮素用量较FP降低60%的情况下,水稻产量都不会下降.SD可以显着降低稻田氮素淋溶损失,FP水稻生育期内可溶性总氮(TN)、硝态氮(NO3-N)和铵态氮(NH4+-N)淋失量分别为39.89、26.22 kg·hm-2和5.49 kg·hm-2,SD和FP相比,TN、NO3-N和NH4+-N的淋失量分别减少18.97、11.18 kg·hm-2和2.27 kg·hm-2 同时SD可以显着提高宁夏灌区水稻氮素利用率,较FP提高21.4%. NB和FP相比,TN、NO3-N和NH4+-N淋失量分别减少14.36、10.14 kg·hm-2和1.84 kg·hm-2,氮素利用率亦提高15.7%,但是TN、NO3-N和NH4+-N淋失量较SD处理分别增加4.61、1.04 kg·hm-2和0.43 kg·hm-2,同时氮素利用率亦减少5.7%.综合考虑水稻产量和环境效益,SD更适合在宁夏灌区水稻种植中推广应用. High N fertilizer and flooding irrigation applied to rice in anthropogenic-alluvial soil often result in N leaching and low use efficiency of applied fertilizer N from the rice field in Ningxia irrigation region in the upper reaches of the Yellow Riv
  • Publisher: Tianjin: Journal of Agricultural Resources and Environment (JARE)
  • Language: Chinese
  • Identifier: ISSN: 2095-6819
    EISSN: 2095-6819
    DOI: 10.13254/j.jare.2014.0334
  • Source: ProQuest Central
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