对14家世界知名大型肥料企业的869组大量元素肥料产品信息数据分析表明，国外重视镁在大量元素肥料产品中的添加，含镁大量元素肥料产品占比为54.7%。在养分含量方面，国外大量元素肥料中镁养分平均含量为2.4% MgO，且在不同肥料类型、不同适宜作物肥料产品之间，镁养分含量没有明显差异；在养分形态方面，在复混肥、水溶肥和叶面肥中，镁形态以硫酸镁为主，在掺混肥料中，镁形态以硫酸镁+氧化镁共存形式为主；在养分配比方面，氮镁比、钾镁比主要在5~8之间，占比分别为35.8%和29.3%，磷镁比主要在2~5之间，占比为53.9%。分析结果可为我国含镁肥料研发提供参考。

Information data about 869 groups of macronutrient fertilizer products made by 14 world-famous fertilizer enterprises are analyzed,and the results show that foreign fertilizer companies attach importance to the addition of magnesium in macronutrient fertilizer products.Magnesium-containing macronutrient fertilizer products holds a proportion of 54.7%.In terms of nutrient content,the average magnesium content is 2.4% by counting on MgO,and there is no significant difference in magnesium content between different fertilizer types and different suitable crops.In terms of nutrient forms,magnesium nutrient exists mainly as magnesium sulfate within compound fertilizers,water-soluble fertilizers and foliar fertilizers,while it exists mainly as magnesium sulfate and magnesium oxide together within blended fertilizers.In terms of nutrient formula,the ratios of nitrogen to magnesium and potassium to magnesium are commonly in the range of 5-8,which accounting for 35.8% and 29.3% respectively;and the ratio of phosphorus to magnesium is mainly between 2-5,accounting for 53.9%.Analysis results can provide reference for China's innovative development in Mg-containing macronutrient fertilizers.

鲁振亚(1991-),男,博士生,研究方向为新型肥料产品研制与评价