fertilizer requirement

基本解释

There was a range for parameters of fertilizer requirement, so it should be adjusted according to soil fertility and yield.
需肥量参数具有较大幅度的变化，应按照土壤肥力以及产量目标来合理调整并确定这个重要参数。
Based on the present status of decreasing marketing in chemical fertilizer, a primary prediction of fertilizer requirement in future 5~15 years is made at home and abroad.
分析国内外化肥市场销量下降的原因，介绍有关部门对今后5～ 15年国内外需求量的初步预测。
Objective To study the fertilizer requirement characteristics of Polygala tenuifolia on nitrogen, phosphorous and potasium fertilizers to improve cultural practices in producing region.
目的研究栽培远志对氮、磷、钾的需肥特性，指导产区大田生产。