three essential fertilizer ratio 三要素比例
study on fertilizer ratio 肥料搭配
organic-mineral fertilizer ratio 有机无机肥料配施
phosphoris and potassium fertilizer ratio 磷钾比例
fertilizer utilization ratio 肥料利用率
chemical fertilizer utilization ratio 化肥利用率
Utilization ratio of fertilizer 化肥利用率
Fertilizer benefit ratio 肥料报酬率
Much attention should be paid to the regulation of N,P and K fertilizer ratio and balance fertilization,to the promotion of nutrients recycling in farmlands and to the prevention of soil fertility deterioration.
必须注意调节N、P、K施肥比例与平衡施肥；充分发挥农田养分再循环的肥源潜力与不断防止土壤养分退化。
参考来源 - 现代土壤学与农业持续发展·2,447,543篇论文数据，部分数据来源于NoteExpress
Consequently, it is necessary that how to apply phosphate fertilizer rationally and raise the utilization ratio of phosphate fertilizer.
因此，研究保护地番茄磷肥的合理施用，提高磷肥利用率已成为迫切需要。
Tillage treatments affect soil nutrient in soil profile, soil nutrient content, and fertilizer use ratio.
不同耕作处理能影响土壤养分的剖面分布和养分含量及肥料的利用效率。
By the contrast experiment of 2bmd-12 specific row No-till dill and JD1590 No-till drill in their straw covering field, the capacity of apply fertilizer and ratio of performance and price.
对2bmd - 12型小麦对行免耕播种机和美国JD 1590型进行了对比实验，内容包括机具适应的地表秸秆覆盖情况、施肥能力以及性能价格比等。
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