Winter nitrogen fertilizer is better than ammonium bicarbonate

When applying nitrogen fertilizer to crops in the winter and spring low temperature season, it is preferable to use ammonium bicarbonate. After the ammonium bicarbonate is applied to the farmland, it can be directly absorbed and utilized by the crop without conversion, and the nitrogen can be supplied in time, and the yield increasing effect is good, and the urea should be left in the hot season. Tests have shown that when the temperatures are 5 ° C, 10 ° C and 20 ° C, the conversion of urea takes 15 days, 7 to 10 days and 4 to 5 days, respectively. In winter and spring, due to the lower temperature, ammonium bicarbonate is just the longest in this respect. The soil colloid has a strong adsorption capacity for ammonium bicarbonate, which is 9.09 to 12.5 times that of urea. Under low temperature conditions, the volatilization loss is small, and it is wet. The rate is also small, only about 1/3 of urea.

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