The study on the effect of potash fertilizer on potato yield was carried out through field experiment and comparing trial.
通过小区试验和大田对比试验，对马铃薯施钾的肥效效应进行了研究。
Using 3414 fertilizer effect experiment, the effect of nitrogenous(N), phosphate(P), potash(K) fertilizer on rape yield in Dongzhi County was researched.
采用“3414”肥料效应试验方案，研究了安徽省东至县油菜高产栽培的氮、磷、钾肥肥料效应，并建立了肥料效应函数模型。
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