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采用二次通用旋转组合设计,多点田间试验,以及模拟寻优,得到鲜归亩产高于500kg,亩纯收益大于500元的最佳农艺组合:每亩密度6860～7600株、施纯氮18.75～22.2kg、五氧化二磷9.1～11.1kg、氧化钾4.46～5.37kg。氮、磷、钾的配比为1:0.49:0.24。
The results showed that the best agronomic combination with the yield per hectare of more than 500kg per acre and net profit of more than 500 yuan per acre was obtained by using the quadratic universal rotary combination design, the multi-point field experiment and the simulation optimization. The density of 6860 ~ 7600 plants per mu 18.75 to 22.2 kg, phosphorus pentoxide 9.1 to 11.1 kg, and potassium oxide 4.46 to 5.37 kg. The ratio of nitrogen, phosphorus and potassium is 1: 0.49: 0.24.