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试验采用二次回归饱和设计方法,研究了氮、钾、锰、硼肥和芸薹素内酯、乙烯利对甜菜根产量和含糖率的影响,建立了以根产量和含糖率为目标的回归方程。研究结果表明:氮、钾、锰、硼肥和芸薹素内酯、乙烯利的合理配合施用能使甜菜产量明显提高,品质得到显著改善。通过模拟寻优,决选出了根产量67704.46kg/hm2,含糖率22.3%以上的调控措施为:在施用P2O5150kg/hm2基础上,施纯N 119.85kg/hm2,K2O 144.79 kg/hm2,纯Mn 5.26 kg/hm2,纯B 1.16 kg/hm2;叶面喷施BR和ETH,浓度分别为10.42mg/L和225.58mg/L。
The effects of nitrogen, potassium, manganese, boron fertilizer, brassinolide and ethephon on the yield and sugar content of beetroot were studied. The yield and sugar content of root Regression equation. The results showed that the rational application of nitrogen, potassium, manganese, boron fertilizer, brassinolide and ethephon could significantly improve the yield and the quality of beet. Through the simulation optimization, we decided the root yield of 67704.46kg / hm2, and the control measures with the sugar content above 22.3% were: applying 119.85kg / hm2 of pure N and 144.79kg / hm2 of pure K2O on the basis of P2O5150kg / hm2, Mn 5.26 kg / hm2 and pure B 1.16 kg / hm2. The concentrations of BR and ETH were 10.42 mg / L and 225.58 mg / L, respectively.