Ammonium bicarbonate application "nine is not suitable"
It is not advisable to apply the ammonium bicarbonate to volatile nitrogen loss. It is determined that when the temperature is 28 °C, the topsoil will lose 20% of nitrogen in 12 hours, and when the soil is covered by 10 cm, the nitrogen will be lost within 12 hours. The dosage is less than 1%, and the ammonium bicarbonate is easy to be consumed by weeds, so the utilization rate of fertilizer is only about 30%; the application of fertilizer in the soil can increase the fertilizer utilization rate by 20% to 30%.
It is not suitable for seed fertilizer. Ammonium has strong corrosiveness and volatility, and has strong corrosive effect on seeds. Using it as a seed fertilizer or seed dressing can cause serious damage to seed germination and seedling growth. To be a seed fertilizer, you can only open the ditch and do not touch the seeds.
It is not suitable for foliar application. Ammonium bicarbonate is easily soluble in water. After dissolution, it is decomposed into ammonium ions, which has the harm of burns and smog on the leaves of the crops, resulting in the loss of leaf spots. Spraying the fertilizer solution with high concentration and high dosage will also cause crop damage and need to be replanted or ploughed. Therefore, ammonium bicarbonate can not be sprayed on the foliar surface, suitable for deep application of soil, mixed with organic fertilizer.
It is not suitable for the sun to attack. The biggest weakness of ammonium bicarbonate is the volatile nitrogen loss, and the rate of volatilization is proportional to the temperature. It was determined that ammonium bicarbonate was placed in the air for 15 days. When the temperature was between 12 and 14 ° C and 16 to 18 ° C, the nitrogen loss was 60% and 95% respectively. At 28 ° C, all nitrogen volatilization loss occurred within 7 days. Therefore, ammonium bicarbonate should not be applied under hot and humid days. It should be applied before 10:00 am and after 5 pm, when the temperature is low, to avoid nitrogen loss caused by direct sunlight.
It is not advisable to have dew. In the morning or after the rain, there are water droplets on the leaves of the crop, and the dew is not dry. The effect of carbon ammonium is strong. If the fertilizer is stained on the leaves with water, it is easy to burn the leaves and cause damage to the plants.
It is not suitable for mixed application of alkali fertilizer. Alkaline fertilizers include plant ash, calcium magnesium phosphate fertilizer, lime, etc., ammonium bicarbonate can not be mixed with these alkaline fertilizers, otherwise it will cause nitrogen to become ammonia volatilization in ammonium bicarbonate, and the fertilizer efficiency loss is fast and waste is serious.
Not suitable for mixing with superphosphate overnight
Ammonium bicarbonate is mixed with superphosphate. Although it is better than single application, it should be applied immediately after mixing. It should not be used for a long time, and it should not be overnight. Because of the strong hygroscopicity of the superphosphate, the mixed fertilizer will become slurried or agglomerated, which is unfavorable for application, and the ammonium hydrogencarbonate is highly volatile and volatile.
It is not suitable to mix with urea. When ammonium bicarbonate is applied to the soil, the soil solution will be acidic for a short period of time, which will accelerate the volatilization loss of urea. Therefore, ammonium bicarbonate cannot be mixed with urea.
It is not suitable to be mixed with bacterial fertilizer. After the application of ammonium bicarbonate, ammonia gas will be released, and contact with the bacterial fertilizer will cause the living bacteria in the bacterial fertilizer to die, so that the bacterial fertilizer loses its effect.
It is not suitable for seed fertilizer. Ammonium has strong corrosiveness and volatility, and has strong corrosive effect on seeds. Using it as a seed fertilizer or seed dressing can cause serious damage to seed germination and seedling growth. To be a seed fertilizer, you can only open the ditch and do not touch the seeds.
It is not suitable for foliar application. Ammonium bicarbonate is easily soluble in water. After dissolution, it is decomposed into ammonium ions, which has the harm of burns and smog on the leaves of the crops, resulting in the loss of leaf spots. Spraying the fertilizer solution with high concentration and high dosage will also cause crop damage and need to be replanted or ploughed. Therefore, ammonium bicarbonate can not be sprayed on the foliar surface, suitable for deep application of soil, mixed with organic fertilizer.
It is not suitable for the sun to attack. The biggest weakness of ammonium bicarbonate is the volatile nitrogen loss, and the rate of volatilization is proportional to the temperature. It was determined that ammonium bicarbonate was placed in the air for 15 days. When the temperature was between 12 and 14 ° C and 16 to 18 ° C, the nitrogen loss was 60% and 95% respectively. At 28 ° C, all nitrogen volatilization loss occurred within 7 days. Therefore, ammonium bicarbonate should not be applied under hot and humid days. It should be applied before 10:00 am and after 5 pm, when the temperature is low, to avoid nitrogen loss caused by direct sunlight.
It is not advisable to have dew. In the morning or after the rain, there are water droplets on the leaves of the crop, and the dew is not dry. The effect of carbon ammonium is strong. If the fertilizer is stained on the leaves with water, it is easy to burn the leaves and cause damage to the plants.
It is not suitable for mixed application of alkali fertilizer. Alkaline fertilizers include plant ash, calcium magnesium phosphate fertilizer, lime, etc., ammonium bicarbonate can not be mixed with these alkaline fertilizers, otherwise it will cause nitrogen to become ammonia volatilization in ammonium bicarbonate, and the fertilizer efficiency loss is fast and waste is serious.
Not suitable for mixing with superphosphate overnight
Ammonium bicarbonate is mixed with superphosphate. Although it is better than single application, it should be applied immediately after mixing. It should not be used for a long time, and it should not be overnight. Because of the strong hygroscopicity of the superphosphate, the mixed fertilizer will become slurried or agglomerated, which is unfavorable for application, and the ammonium hydrogencarbonate is highly volatile and volatile.
It is not suitable to mix with urea. When ammonium bicarbonate is applied to the soil, the soil solution will be acidic for a short period of time, which will accelerate the volatilization loss of urea. Therefore, ammonium bicarbonate cannot be mixed with urea.
It is not suitable to be mixed with bacterial fertilizer. After the application of ammonium bicarbonate, ammonia gas will be released, and contact with the bacterial fertilizer will cause the living bacteria in the bacterial fertilizer to die, so that the bacterial fertilizer loses its effect.
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