Urea misuse

Urea is one of the most important chemical fertilizers for increasing crop yields. However, at present farmers have many unreasonable phenomena in the application process. These unreasonable application methods not only cause many unnecessary wastes, but also seriously pollute the agricultural environment and groundwater resources. Therefore, when making urea, you should pay attention to the following four mistakes:

1, urea and ammonium bicarbonate

Since urea is applied to the soil, it must be converted into ammonia before it can be absorbed by the crop. The conversion rate is much slower under alkaline conditions than under acidic conditions. After ammonium bicarbonate was applied to the soil, the reaction was alkaline and the pH was 8.2-8.4. Mixed application of ammonium bicarbonate and urea in farmland will greatly reduce the rate of conversion of urea to ammonia, which will easily lead to loss of urea and loss of volatiles. Therefore, urea and ammonium bicarbonate should not be mixed or applied simultaneously.

2. Surface spread

Urea is applied to the surface of the earth. At room temperature, it takes 4-5 days for transformation to be absorbed by the crop. Most of the nitrogen is volatilized during the ammonium process. The utilization rate is only about 30%. If the alkaline soil and organic matter are high The application of soil, nitrogen loss faster and more. Therefore, nitrogen cannot be spread on the surface.

3, urea for seed fertilizer

In the production process, urea often produces a small amount of biuret. Biuret content of more than 2% will poison seeds and seedlings. Urea enters seeds and seedlings and denatures proteins, affecting seed germination and seedling growth.

4, immediately after the application of urea irrigation

Urea is an amine nitrogen fertilizer which must be converted to amine nitrogen before it can be absorbed by the crop. The conversion process depends on the conditions of soil quality, moisture, temperature, etc. The time varies from 2 to 10 days. If urea is applied immediately after irrigation or dry land is applied before heavy rain, urea will dissolve in water and be lost. .

Exported Inorganic Salt

The main products of basic chemical industry, such as hydrochloric acid, caustic soda, soda ash, ammonium chloride and chlorine gas, are mainly produced with industrial salt as raw materials. In addition, also used in soap manufacturing, ceramic, glass production, daily chemical, oil drilling, drilling fluid, completion fluid, petrochemical dehydrated liquid, early strength agent, construction industry in the production of coating latex coagulation agent, curing agent, rubber industry papermaking additives and waste paper deinking, chemical industry of inorganic chemical raw materials and sulfuric acid root removal agent, the curing agent of alginic acid sodium, the prevention and treatment of wheat, apple, cabbage, such as decay and preparing food preservatives, metallic sodium and other sodium compounds, such as steel heat treatment medium. Salt is also widely used in water treatment, road snow removal, refrigeration and refrigeration.

Exported Inorganic Salt,Industrial Sodium Chloride,Sodium Chloride For Pvc,Sodium Chloride For Pesticide

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