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采用超大区田间试验,以不施氮、传统氮素管理方式和优化氮素管理方式为对照,研究冬小麦施用包裹型缓/控释肥(包裹肥料)对产量、土壤无机氮和氮肥利用效率的影响,并对冬小麦施用包裹型缓/控释肥效果进行评价。结果表明:与传统氮素管理方式相比,优化氮素管理方式和包裹肥料处理在分别节省了78%和67%的氮肥的条件下,获得了和传统氮素管理方式相似的冬小麦子粒产量;采用氮素优化管理模式和施用包裹肥料显著降低了土壤无机氮残留和氮素表观损失,从而显著提高了氮肥利用率;与优化氮素管理方式相比,施用包裹肥料可一次性基施,省时省力,提高了经济效益。
The field experiments were conducted to compare the effects of non-nitrogen application, conventional nitrogen management and optimized nitrogen management on the yield, soil inorganic nitrogen and nitrogen use efficiency of winter wheat with coated slow / controlled release fertilizer (coated fertilizer) Impact, and the application of the package-type slow / controlled release fertilizer effect of winter wheat evaluation. The results showed that under the condition of optimized nitrogen management and wrapped fertilizer treatment, 78% and 67% nitrogen fertilizers were saved compared with the traditional nitrogen management methods, and grain yield was similar to that of conventional nitrogen management. Nitrogen optimization management and application of coated fertilizers significantly reduced soil inorganic nitrogen residues and apparent nitrogen losses, thereby significantly increasing nitrogen use efficiency. Compared with optimized nitrogen management, application of coated fertilizers could be applied once, Save time and effort, improve economic efficiency.