棉花“3414”肥料效应田间试验研究

Study on "3414" Fertilizer Effect Field Test of Cotton

[目的]研究安徽省地区棉花的最佳施肥量。[方法]通过"3414"回归最优设计原理设置棉花肥效试验,探索肥料效应函数方程,由此得到理论氮、磷、钾最佳施肥量。[结果]根据肥料效应函数方程,理论氮、磷、钾最佳施肥量N 264.75 kg/hm2,P2O590.45 kg/hm2,K2O359.55 kg/hm2,最佳产量4013.40 kg/hm2。综合分析不同的施肥量,当地中等肥力田氮、磷、钾推荐量分别为N 301.65 kg/hm2、P2O589.55 kg/hm2、K2O 391.65 kg/hm2。[结论]研究结果为科学指导棉花施肥提供了参考依据。

[Objective]The aim was to study the optimum fertilization of cotton in Anhui Province.[Method] The fertilizer effect function equation was explored,by setting cotton fertilizer trials with ＂3414＂ regression optimal design principles.[Result] According to fertilizer response function equation,the theory optimum fertilization of nitrogen,phosphorus,potassium were N 264.75 kg/hm2,P2O590.45 kg/hm2,K2O 359.55 kg/hm2,and the optimum yield was 4 013.40 kg/hm2.Nitrogen,phosphorus and potassium were recommended amount of N301.65 kg/hm2,P2O589.55 kg/hm2,K2O 391.65 kg/hm2in local medium fertility field,with comprehensive analysis of the different amount of fertilizer.[Conclusion] The result provided a reference for scientific guidance of cotton fertilization.