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通过最优回归设计田间试验测得的参数,建立旱稻产量目标性状的氮磷两因素效应编码值回归方程,从挖掘方程所蕴藏的信息得出,早稻高产最大施肥量为N298.65kg/hm~2、P_2O_5 203.70kg/hm~2,产投比8.82。经济最佳施肥量为N266.75kg/hm~、P_2O_5 186.6kg/hm~2,产投比9.76,并对单因素效应及互作效应作了剖析。
Through the optimal regression, the parameters measured in the field experiment were designed to establish the regression equation of the coding value of nitrogen and phosphorus effect on the target traits of upland rice. According to the information contained in the excavation equation, the maximum yield of early rice was N298.65kg / hm ~ 2, P2O5 203.70kg / hm ~ 2, production and investment ratio 8.82. The economic optimum fertilizer amount was N266.75kg / hm ~, P_2O_5 186.6kg / hm ~ 2, and the production / investment ratio was 9.76. The single factor effect and the interaction effect were analyzed.