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Precautions for the use of nitrogen plant

Precautions for the use of nitrogen plant

Precautions for the use of nitrogen plant

Jun 30,2021

nitrogen plant is a very common fertilizer, but many people do not know what to pay attention to when using nitrogen plant.

1. Ammonium nitrogen plant should not be mixed with alkaline fertilizer

Because the mixed application will produce ammonia gas, reducing the fertilizer effect. Commonly used ammonium nitrogen fertilizers include ammonium bicarbonate and ammonium sulfate, and alkaline fertilizers include plant ash and lime.

2. Nitrate nitrogen fertilizer should not be mixed with organic fertilizer

Organic fertilizer contains more organic matter. When nitrate nitrogen fertilizer is encountered, nitrification will occur under the action of denitrifying bacteria, and nitrogen will be lost. Commonly used nitrate nitrogen fertilizers are ammonium nitrate, sodium nitrate, calcium ammonium nitrate and so on.

3. Nitrate nitrogen fertilizer should not be applied in the field

Nitrate nitrogen fertilizer is easily decomposed by denitrifying bacteria under anaerobic conditions, causing nitrogen loss and reducing fertilizer efficiency. Dry land should be forbidden to apply before and after heavy rain or watering after application.

4. Urea should not be poured

After being applied to the soil, urea will be hydrolyzed into ammonium bicarbonate through the action of soil microorganisms, and then decomposed into ammonia and volatilized.

5. Urea should not be close to the seeds

Urea contains a small amount of biuret, which will affect the germination of seeds. If the concentration is too high, it will poison the seeds. When using urea as seed fertilizer, do not directly touch the seeds or control the amount of urea applied.

6. The concentration of urea as an extra-root top dressing should not be too high

When used as foliar fertilizer, urea has a good effect, but the dosage should not be increased blindly.

7. Ammonium bicarbonate should not be applied to the soil surface for too long

Avoid shallow application, the nature of ammonium bicarbonate is unstable, and it should be covered immediately after application.

8. Ammonium sulfate is not suitable for long-term application

Ammonium sulfate is an acid fertilizer, long-term application will increase the acidity of the soil and destroy the soil structure. When applied to alkaline soil, sulfate ions will interact with calcium ions to harden the soil. Therefore, it should be used interchangeably with other nitrogen fertilizers.

9. It is not suitable to be applied to nitrogen-free crops

If applied to nitrogen-repellent crops, the physiological functions of the crops will be destroyed, and the crops will die in severe cases.