配方施肥对甘薯产量及经济效益的影响  

Effects of Formula Fertilization on Yield and Economic Benefit of Sweet Potato

作　　者：王旭 刘桂华 王文华 

机构地区：[1]道真自治县农牧局,贵州道真563500 [2]贵州省土壤肥料研究所,贵州贵阳550006

出　　处：《贵州农业科学》2016年第6期86-89,共4页Guizhou Agricultural Sciences

基　　金：2015年度测土配方施肥项目

摘　　要：为构建甘薯施肥模型,完善甘薯施肥方案,通过设置不同施肥配方,研究其对甘薯的产量和经济性状的影响。结果表明:不同氮、磷、钾配比对甘薯的产量有显著影响,以处理6(N∶P_2O_5∶K_2O=6∶2.70∶7.50)为甘薯生产的最佳施肥配比。在试验条件下,经对甘薯产量和肥料效益回归分析,当施肥量为N∶P_2O_5∶K_2O=5.23∶2.35∶10.06时产量最高;但综合考虑,最佳经济施肥量为N∶P_2O_5∶K_2O=4.50∶2.45∶7.60。The effects of different formula fertilization combinations on yield and economic traits of sweet potato were analyzed to structure the fertilization model and prefect the fertilization schedule in sweet potato production.Results：Different formula fertilization combinations all have the significant effect on yield of sweet potato and the optimum ratio of N∶P2O5 ∶K2O is 6∶2.70∶7.50 in sweet potation production.The yield of sweet potato is the highest when the N,P and K ratio is 5.23∶2.35∶10.06 according to regression analysis between sweet potato yield and fertilizer benefit under the test conditions but the optimum economic fertilization ratio of N∶P2O5∶K2O is 4.50∶2.45∶7.60.

关 键 词：甘薯 施肥模型 施肥方案 最佳经济施肥量 

分 类 号：S531[农业科学—作物学]