秸秆还田条件下分层施肥对玉米产量及氮素利用的影响
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S513

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国家重点研发计划项目(2018YFD0300308-01)


Effects of Layered Fertilization on Maize Yield and Nitrogen Utilization under Straw Returning Conditions
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    摘要:

    为明确秸秆还田下施肥方式对玉米氮素利用的影响,采用田间试验,设不施氮肥对照、常规施肥、秸秆还田+常规施肥和秸秆还田+分层施肥4种处理,研究了秸秆还田配合不同施肥方式对玉米产量、氮素利用率及土壤性质的影响。结果表明,与常规施肥相比,秸秆还田处理明显提高玉米产量,其中秸秆还田配合分层施肥效果较好,2020年玉米产量提高了17.68%,并且该处理比秸秆还田配合常规施肥产量增加了4.65%。秸秆还田处理明显增加玉米氮素吸收量,尤其秸秆还田配合分层施肥处理随着秸秆还田时间的增加效果更明显。秸秆还田处理明显提高土壤有机质、全氮和有效钾含量,但分层施肥与常规施肥间无显著差异,对土壤全磷、全钾、碱解氮和有效磷含量影响不大。可见,秸秆还田+分层施肥有利于玉米对氮素的吸收利用,提高产量。

    Abstract:

    In order to clarify the effect of fertilization methods on Maize nitrogen utilization under straw returning, field experiments were conducted to study the effects of straw returning combined with different fertilization methods on maize yield, nitrogen utilization rate and soil properties, with four treatments: no nitrogen fertilizer control, conventional fertilization, straw returning + conventional fertilization and straw returning + layered fertilization. The results showed that compared with conventional fertilization, straw returning treatment significantly increased the yield of corn, and the effect of straw returning combined with layered fertilization was better. In 2020, the yield of corn increased by 17.68%, and the yield of this treatment increased by 4.65% compared with straw returning combined with conventional fertilization. Straw returning treatment significantly increased the nitrogen absorption of corn, especially with the increase of straw returning time. Straw returning treatment significantly increased the contents of soil organic matter, total nitrogen and available potassium, but there was no significant difference between layered fertilization and conventional fertilization, and had little effect on the contents of soil total phosphorus, total potassium, alkali hydrolyzable nitrogen and available phosphorus. It can be seen that straw returning + layered fertilization is conducive to the absorption and utilization of nitrogen in maize and improve yield.

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解占军,韩瑛祚,何志刚,等. 秸秆还田条件下分层施肥对玉米产量及氮素利用的影响[J]. 科学技术与工程, 2023, 23(9): 3680-3685.
Xie Zhanjun, Han Yingzuo, He Zhigang, et al. Effects of Layered Fertilization on Maize Yield and Nitrogen Utilization under Straw Returning Conditions[J]. Science Technology and Engineering,2023,23(9):3680-3685.

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历史
  • 收稿日期:2022-07-15
  • 最后修改日期:2023-01-16
  • 录用日期:2022-11-24
  • 在线发布日期: 2023-04-12
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