Magnesium-containing urea and preparation method thereof

The invention relates to the technical field of compound fertilizers, in particular to magnesium-containing urea and a preparation method thereof. The magnesium-containing urea comprises the following components in parts by weight: 75-90 parts of urea, 6-25 parts of jarosite and 1-10 parts of a fluxing agent. The magnesium-containing urea has the advantages that the magnesium element source is simple, the utilization rate of the magnesium element and the nitrogen element in the nitrogen fertilizer can be increased, and the requirements of crops for the magnesium element and the nitrogen element are met. 本申请涉及复合肥技术领域，特别是涉及一种含镁尿素及其制备方法。含镁尿素，包括以下重量份的各组分：尿素75～90份、硫镁矾6～25份及助熔剂1～10份。本申请提供的含镁尿素具有镁元素来源简单，且能够提升氮肥中镁元素和氮元素利用率，满足农作物对镁元素和氮元素需求的优势。