优化配方施肥技术研究

STUDIES ON OPTIMIZATION OF DIRECTIONS FOR FERTILIZER APPLYING TECHNIQUES

本文报导了利用肥料效应函数法确定磷、钾肥合理施用量。试验采用二因子回归最优设计,在三穗县、凯里市对水稻、玉米作物进行2～3年田间试验,建立肥料效应函数。作物实际产量与函数式估计值拟合很好。通过2000亩水稻磷、钾配方施肥示范,增产效果显著。

Using the function of fertilizer effect to indentify the proper applying amount of phosphate and potash fertilizer is reported in this paper. By adopting the two factor regression optimum design, the experiment was conducted on rice and maize in Shanshui county and Kaili city for 2 - 3 years in field to build the function of fertilizer effect. The practical yields was accordant to the estimated yields, from the function. It showed significant effect of raising the yield of rice by demonstrating the optimization of directions for phoshate and potash fertilizer applying in 2000 mu rice field.