杂交水稻的高产栽培技术体系研究 Ⅰ.杂交早稻高产栽培的数学模型分析

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。

HIGH YIELDING CULTIVATION TECHNOLOGY SYSTEM OF HYBRID RICE Ⅰ.An Analysis of Mathematical Model Adapted to early Season Cultivation with High Yield and Low Cost

The orthogonal-gyrating-regression design was applied in this stu- dy.In the light of the design,the field trials with five important factors and five levels per factor selected from the empirical model of rice production were conducted at the Experimental Station of FAC in 1988.The tested material Weiyou 64 was used for the research work.The data from the test were analyzed by the aid of FO-3 type computer,then a quinary quadratic regression equation was established.According to the newly-built mathematic- al model,the main effects of the factors and the mutual relationships between the yield and the factors were dealt with in detail.This in turn led to the conclusion that the treatments with 324—330 kg seeds/ha sown,102—105×10~4 seedlings/ha transplanted,165 kg N/ha,82.5—85.5 kg P_2O_5/ha,and 132— 139.5 kg K_2O/ha applied would be expected to gain the optimum yield(more than 7500 kg/ha)and the best economic effectiveness.The conclusions were well verified at the Dili Experimental Station,Putian,Fujian in 1987.