Many people don't know much about the efficacy of urea and ammonium bicarbonate, so especially for "selecting phobia patients", the use of urea for winter crop fertilization or ammonium bicarbonate is a big problem. Let's analyze it in detail. Which is better.
Crops are fertilized in low temperature seasons such as winter and early spring. The application of ammonium bicarbonate is better and more effective than urea. Ammonium bicarbonate belongs to ammonium nitrogen fertilizer. It can be directly absorbed and utilized by crops after being applied to soil. Urea belongs to ammonium amide. It needs to be converted into ammonium nitrogen by urease secreted by urea bacteria in soil to absorb roots.
Ammonium bicarbonate is rarely volatilized at temperatures below 20 ° C. After being applied to the soil, ammonium ions can be rapidly adsorbed by the soil colloid, and its adsorption force is 8 times that of urea. Therefore, it is not easy to lose with water. When urea is applied to the soil, it exists in a molecular state before it is converted into ammonium nitrogen, which is difficult to be adsorbed by the soil colloid and is easily lost.
After testing, the application of ammonium bicarbonate in winter wheat fields is 1~1.5 times higher than that in high temperature seasons.
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