Use urea to prevent misunderstanding
Misunderstanding 1, urea is mixed with ammonium bicarbonate. Since urea is applied to the soil, it can be converted into ammonia to be absorbed by the crop, and its conversion rate is much slower in alkaline regulations than in acidic conditions. If farmers apply ammonium bicarbonate and urea, the rate of conversion of urea to ammonia will be greatly slowed down, which will easily lead to the loss of urea.
Misunderstanding 2, surface measures. Most of the nitrogen is easily volatilized during the ammoniumification process. If it is applied on alkaline soil and high organic soil, the nitrogen loss is faster and more.
Misunderstanding three, urea as a seed fertilizer. Urea often produces small amounts of biuret in the production process, while biuret content of more than 2% can cause toxicity to seeds and seedlings.
Misunderstanding 4, immediately after irrigation, water or drainage. If the urea is filled or drained immediately after application, the urea will dissolve in the water and be lost.
Misunderstanding 5, urea and alkaline fertilizer mixed application. After the urea is applied, it must be converted into ammonia nitrogen to be used. Under the alkaline condition, the nitrogen will become ammonia gas and volatilize.
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