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目的:探讨人工栽培滁菊适宜的水氮管理模式。方法:采用盆栽试验,水、氮二因素二次回归旋转组合设计,研究水氮耦合对滁菊耗水量及水分利用效率的影响。结果:滁菊不同生育时期耗水量有较大差异,以现蕾期滁菊耗水强度较大。水氮耦合对滁菊苗期、分枝期、现蕾期、采摘期耗水量和生育期总耗水量以及水分利用效率有显著影响,水分因子对滁菊各生育时期耗水量及总耗水量的影响大于氮肥因子,氮肥因子对滁菊水分利用效率的影响大于水分因子,水肥间存在显著交互作用;当水分为田间持水量的71.35%,施氮量0.268 N/kg,滁菊水分利用效率最高,达3.435 g/kg·株。结论:从滁菊水分利用效率角度考虑,滁菊水氮管理以中低水平水分管理和中高水平氮肥用量较为适宜。
Objective: To explore the appropriate water and nitrogen management mode of artificial cultivation of chrysanthemum. Methods: Pot experiments, water and nitrogen two-factor regression regressive rotation design were used to study the effects of water and nitrogen coupling on water consumption and water use efficiency of Chu Ju. Results: There was a big difference in water consumption between different chrysanthemums at budding stage. Water and nitrogen coupling had significant effects on the water consumption, total water consumption and water use efficiency at the seedling stage, the branching stage, the budding stage, the picking stage, the water use efficiency and the water use efficiency When the water content was 71.35% of the field capacity and the nitrogen application rate was 0.268 N / kg, the water use efficiency of chrysanthemum was the highest, and the water use efficiency was the highest. Up to 3.435 g / kg · strain. Conclusion: From the perspective of water use efficiency of Chuju, the management of water and nitrogen at medium and low levels and the medium and high levels of nitrogen fertilizer at Chu Ju water management are more appropriate.