粪肥和混合肥料的使用几乎与农业同样古老。
The use of manure and composts as fertilizers is probably almost as old as agriculture.
本研究课题属于土壤肥料学、粘土矿物学、农业平衡施肥原理与化工控释技术交叉结合的前沿课题。
This study belongs to the across front item among soil fertilizers, clay minerals, agriculture balance fertilizing principle and chemical engineering controlled release technology.
电石与氮气作用生成石灰氮可作农业肥料。
Besides, calcium carbide can react with nitrogen to generate lime nitrogen for agricultural fertilizer.
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