第1期中国古代土墩分类简介···············································......

这种土壤营养调理剂含有以下成份：草炭或风化煤，厩肥，尿素，三料磷肥，钙膨润土或皂石或沸石或蛭石，黑矾或硫酸亚铁，硫酸钾，硫酸锌，钼酸铵，硼酸......

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