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为探索金优990的丰产栽培技术模式,采用4因素5水平二次回归通用旋转组合设计,研究了金优990产量与插秧密度以及氮、磷、钾施用量之间的关系,建立了各因素与产量的数学模型。影响金优990产量的4个因素作用大小依次为密度>氮肥>钾肥>磷肥;金优990获得10.33 t/hm~2的目标产量以上时,各因素的取值范围为密度20.36万~21.70万穴/hm~2,N用量160.20~175.23 kg/hm~2、P2O5用量77.36~93.51 kg/hm~2、K2O用量164.78~190.13 kg/hm~2。
In order to explore the high-yielding cultivation technology model of Jinyou 990, the quadratic regression generalized quadratic regression model was used to study the relationship between the yield of Jinyou 990, the density of transplanting seedlings and the application rates of nitrogen, phosphorus and potassium. And the mathematical model of production. The factors affecting the yield of Jinyou 990 were as follows: density> nitrogen fertilizer> potash fertilizer> phosphate fertilizer. When Jinyou 990 obtained above the target production of 10.33 t / hm 2, the values ranged from 203,600 to 217,000 The results showed that the amount of N2O was 160.20 ~ 175.23 kg / hm ~ 2, P2O5 was 77.36 ~ 93.51 kg / hm ~ 2, and K2O was 164.78 ~ 190.13 kg / hm ~ 2.