What is the difference between ammonium urea and urea?

What is the difference between ammonium urea and urea? Is the effect of ammonium urea better than urea? Also ask experienced netizens to help introduce. Nitrogen-containing fertilizers such as urea, urea, ammonium sulfate, ammonium hydrogen carbonate, ammonium chloride, ammonium nitrate and so on are all nitrogen fertilizers, but the utilization rate of nitrogen fertilizer is very different, so the effect is different after use. 1. Urea is an acylamine nitrogen fertilizer, which must be transformed into ammonia nitrogen when applied to the soil before it can be absorbed by crops, so the fertilizer effect is a little slow. And urine ammonium is ammonia nitrogen fertilizer, applied to the soil without decomposition and transformation, crops can be absorbed directly, so the fertilizer effect is very fast. 2. Urea has a by-component: biuret. Biuret is a harmful substance, excessive or long-term application of urea often leads to soil salinization and poor air permeability, which is easy to damage crop roots and affect crop growth, so it is not easy to use urea too much or for a long time. On the other hand, ammonium urea does not contain biuret, so it is non-toxic and harmless, which is an environment-friendly and efficient nitrogen fertilizer. When applied to the soil, it does not destroy the soil structure and does not harm the root system, which greatly increases the crop yield by 20% to 30%. 3. Urea has fast nitrogen loss and volatilization, so the utilization rate is low, and the utilization rate is only 20-30%. While ammonium urea through high tower melt granulation chemical fertilizer reaction, but also added sulfur, magnesium, calcium, shed and other medium-sized elements and slow controlled release agent, the loss is small, not easy to volatilize, so it plays a quick and long-term effect, greatly improving the utilization rate of fertilizer, the utilization rate is more than 85%. Therefore, ammonium urea can top 120 jin of urea fertilizer effect. )