“3414”肥效对江淮黄褐土芝麻产量和经济效益的影响

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为了给芝麻的生产提供施肥的理论依据,采用"3414"测土配方试验设计,通过不同的NPK配比了解群体的生育变化并进行群体的产量比较,从中筛选出最佳产量和氮磷钾配比,从理论上阐述对芝麻的影响。结果表明,土壤供氮磷钾量分别为N82.95kg/hm2、P2O530.75kg/hm2、K2O69.15kg/hm2;肥料利用率分别为N13.46%、P2O519.34%、K2O23.56%。由此得出,氮磷钾配施为N120kg/hm2、P2O545kg/hm2和K2O120kg/hm2能获得最高的经济产量和效益。
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