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通过田间试验研究方法,研究了不同控氮比掺混肥(非控、半控和全控)和运筹方式(基施、基施和追施结合)对土壤硝态氮、玉米产量和氮素利用率的影响。研究结果表明:控氮比52.5%掺混肥在基施的运筹方式下,不仅有利于玉米生育前期对土壤硝态氮的需要,而且满足其后期氮素供应,也能降低其在田间土壤中的累积残留,并能达到高产稳产,与其他控氮比掺混肥和运筹方式相比其增产幅度在6.45%～19.70%之间,提高氮素利用率最高能达到65.38%,是玉米种植实践中最佳控氮比掺混肥和运筹方式。
Through field experiments and research methods, the effects of different ratios of nitrogen and nitrogen fertilizer (non-controlled, semi-controlled and full-controlled) and operational modes (basal, basal and top dressing) on soil nitrate nitrogen, Effect of utilization. The results showed that the application rate of 52.5% nitrogen-enriched fertilizer in basal application was not only beneficial to the requirement of soil nitrate nitrogen at the early stage of maize growth but also to the supply of nitrogen in later stage, , And can achieve high and stable yield. Compared with other nitrogen-controlled fertilizers and methods of operation and management, the yield increase ranged from 6.45% to 19.70%, and the highest nitrogen utilization rate could reach 65.38% The best ratio of nitrogen in control fertilizer and operation methods.