Abstract: 【Objective】 To explore the effect of application of Zn,B,Mn fertilizers on yield,sugar content and sugar yield in sugar beet.【Methods】 The“3414” optimal regression design test plan was applied.Three factors of Zn,B,Mn with 4 fertilizer levels（no fertilizer（CK）,low dosage,middle dosage and high dosage）were set up.【Results】 Compared with CK,the yield was increased by 20.64%-25.53%,the sugar content was increased by 0.02-0.83 degree（except treatment 8）,and the sugar yield was increased by 21.86%-30.85%.By establishing the effect function equation of fertilizer response and sugar yield,the optimum fertilizers amount were ZnSO₄·7H₂O 20.50 kg/hm²,Na₂B₄O₇·10H₂O 27.01 kg/hm²,MnSO₄·7H₂O 42.35 kg/hm².【Conclusion】 Applying the appropriate amount of Zn,B,Mn fertilizer could improve the sugar beet yield and sugar content,and would be helpful to improve the sugar yield.

Key words: Sugar beet, Zn fertilizers, B fertilizers, Mn fertilizers, Yield, Sugar content, Sugar yield