摘要
采用４元２次旋转组合设计，建立了含糖率、产糖量数学模型。对模型进行了寻优、单因素效应分析、边际效应分析和多方案最佳农艺措施的确定。分析表明，方程含糖率最优解明显高于单因素效应的最优目标值；磷肥和密度对含糖率、产糖量呈正效应，氮肥和灌水次数超过一定限度则呈负效应；磷肥与密度的交互作用对含糖率有显著影响；在中等肥力水平条件下，最佳农艺措施为：尿素为２６．１～３４．６ｋｇ／亩，三料磷肥１０．０１～１４．２５ｋｇ／亩，密度为５７００～７９００株／亩，灌水３～５次。
The excellent one has found by four variable component in twice times design of rota-tion established the mathematics model of the sugar content and sugar yield, analysing onthe one factor effect and marginal effect and making solution of the sugar content is higherthan the target optimum of one factor effect. The phosphoric fertilizer and density are posi-tive effect to the sugar content and the sugar yield.The interaction of phosphorus with den-sity is obvious effect to the sugar content,the interaction of phosphonis with density and ni-trogen with water is obvious effect to the sugar yield.Under the condition of middle fertility.The best agronomical measures:26.1～34.6kg urea,10.01～14.25kg multiple super phos-phorus,5700～7900 plants/mu with 3～5 times watering.
关键词
甜菜
数学模型
农艺措施
栽培
Sugarbeet
Mathematics model
Agronomical measures
