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采用正交回归组合设计,对威优64高产低耗的5个因子5个水平进行田间试验。模拟并选出单产7500 kg/ha 以上高产、稳产和最佳经济效果的技术体系:秧田播种量324～330 kg/ha,本田基本苗数102×10~4～105×10~4/ha,施用165kg N/ha,82.5～85.5kg P_2O_5/ha 和132～139.5kg K_2O/ha。本方案经1987年莆田埭里农科站验证过。还分析了数学模型中各因子的效应和产量及其影响因子的相互关系。
Orthogonal regression was used to design a combination of 5 high-yielding and low-yielding five factors and five levels of field test. The technical system of high yield, stable yield and best economic effect with a yield of more than 7,500 kg / ha was simulated and selected: seedling sowing amount 324 ~ 330 kg / ha, Honda basic seedling number 102 × 10 ~ 4 ~ 105 × 10 ~ 4 / ha, 165 kg N / ha, 82.5-85.5 kg P2O5 / ha and 132-139.5 kg K2O / ha were applied. The program by the 1987 Putian Sui agricultural station verified. Also analyzed the mathematical model of the effect of each factor and yield and its impact on the relationship between factors.