脱毒马铃薯氮磷钾肥料效应数学模型的研究

用3因素5水平12处理回归设计法,设置重复并在小区处理上汲取拉丁方排列的优点以3×4方式布局,使一个试验结果有多个统计组合,择其中R、F值最显著,Se值最小的函数建立回归方程。通过计算机模拟寻优,确定马铃薯产量指标27 000～30 000 kg的优化施肥技术方案为每公顷施纯N:129.22～170.78 kg;纯P2O552.72～68.40 kg;纯K2O 196.65～253.35 kg。

The Mathematical Model for the Effect of N, P2O5 and K2O on Tuber Yield of Virus-free Potatoes

A regression design,including 3 factors,5 levels and 12 treatments,with 2 replicates and plots in each replicate arranged in the manner of 3 × 4,was used to study the effect of N,P2O5 and K2O on tuber yield of virus-free potatoes.In this design,many statistical combinations were generated,and the regression equation with most highly significance of R and F values and minimal Se was chosen.By means of computer imitation in selection for fertilization rate for the target yield of 27 000~30 000 kg·hm-2,the fertilization rate per hectare of N 129.22~170.78 kg,P2O5 52.72~68.40 kg,and K2O 196.65~253.35 kg was determined.