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配方施肥作为一种先进的施肥技术,近年来在各地得到了推广,发挥了应有的增产效果,但在配方施肥过程中,往往只介绍标准化肥用量。现介绍一种简便的标准化肥折合成其他化肥的计算方法: 标准氮肥(含氮21％)一般是指硫酸铵,标准磷肥(含磷12％)一般是指过磷酸钙;标准钾肥有硫酸钾、氯化钾,含氧化钾都在60％左右。目前氮、磷化肥种类繁多,含量差异很大,碳酸氢铵含氮17％,尿素含氮47％,过磷酸钙含磷11％左右,磷酸二铵含磷42％以上、同时还含氮18％。还有其他复合肥,含量不一。
As an advanced fertilizer technology, formula fertilization has been popularized all over the country in recent years and exerted its due effect. However, in the process of formula fertilization, only the amount of standard fertilizer is often introduced. Is now introduced a simple standard fertilizer into synthetic fertilizer into other methods of calculation: standard nitrogen fertilizer (nitrogen 21%) generally refers to ammonium sulfate, standard phosphate fertilizer (phosphorus 12%) generally refers to superphosphate; standard potassium fertilizer potassium sulfate , Potassium chloride, including potassium oxide are about 60%. Currently nitrogen and phosphorus fertilizers a wide range of content varies greatly, ammonium bicarbonate nitrogen 17% nitrogen urea 47%, superphosphate phosphorus 11%, more than 42% phosphoric acid phosphate 42%, but also nitrogen 18 %. There are other compounds, different levels.