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Urea Is A High Concentration Of Acylamide Nitrogen Fertilizer

Tianjin BRG Products Co.,Ltd | Updated: Aug 21, 2017

Urea nitrogen content between 44% to 46%, is the highest nitrogen content of solid nitrogen fertilizer, physical and chemical properties are relatively stable, pure white or slightly yellow crystal or small particles, plus moisture, moisture Small, soluble in water, neutral nitrogen. Urea nutrient content is higher, suitable for a variety of soil and a variety of crops, the most suitable for top dressing, Urea root top dressing effect is also very good. Urea into the soil, only in the conversion to ammonium bicarbonate can be a lot of crop absorption. Due to the existence of the conversion process, so the fertilizer effect is slow. Generally 4 to 6 days in advance to apply. At the same time also requires deep casing, after the application should not immediately irrigation, Urea to prevent nitrogen leaching to deep, reduce fertilizer efficiency.

Nitrogen fertilizer is the most commonly used chemical fertilizer in farmer cultivation. The lack of nitrogen in crops can cause plants to be short, weak, underdeveloped, easy to prematurely and precocious, and significantly affect yield. Urea is one of the most important varieties of nitrogen fertilizers. Now the main features of urea are described below:

1. Urea is a high concentration of acylamide nitrogen fertilizer, Urea nitrogen fertilizer is the highest nitrogen content of fertilizer, quasi-nitrogen content of 46%.

2. Ordinary urea is white crystal, was needle or prismatic crystal, hygroscopicity strong. The agricultural urea fertilizer is mostly granular, is a plus a moisture-proof agent made of translucent particles. Domestic urea generally particle size of 0.8 to 2.5 mm, imported urea particle size 2 to 4 mm, the largest in more than 7 mm.

3. Urea in the water can quickly melt, touch easily soluble, no creamy feeling.

4. Urea tasteless and odorless. If the smell of urea can smell, may be mixed with ammonium bicarbonate; urea burning smoke, no smell. If you smell the smell of burning, Urea may be mixed with ammonium chloride.

5. Urea is a neutral quick-acting fertilizer, applied to the soil through the urease catalytic role after a few days, into ammonium carbonate or ammonium bicarbonate can be absorbed by the crop. Urea Field application of urea, generally 3 to 4 days in summer effective, 7 days or so fall effective.

6. urea as a base fertilizer to deep cover soil. Urea in the conversion before the molecular state, can not be soil adsorption; conversion of ammonia after the formation of volatile. So to deepen, and to prevent the loss of water

7. Urea for topdressing to be deep, Urea and should not immediately irrigation, if immediately irrigation easy to make the loss of urea with water, should be interval 4-6 days after irrigation. Chase fertilizer time should be in the morning or evening.

8. urea for fertilizer should be careful not to direct contact with the seeds, because the high concentration of urea directly contact with the seeds, often affect the seed germination, Urea resulting in missing seedlings.

9. urea in the biuret content of more than 1% can not do fertilizer, fertilizer and foliar fertilizer. Because urea in the production of granulation, often due to high temperature produce a small amount of biuret, also known as biuret, the crop has an inhibitory effect. So the field of urea, the amount should not be too large or too concentrated use.

10. Urea is a physiological neutral fertilizer, Urea in the soil does not leave any harmful substances, long-term use without adverse effects.

11. Urea should be stored correctly. Such as improper storage, easy to moisture caking, affecting the original quality of urea, to bring some economic losses to farmers. Before use must keep the urea bag intact, the transport process to gently, rain. Store in a dry, Urea well ventilated place where the temperature is below 20 degrees. Has opened the bag of urea, such as not used up, be sure to timely closure of the pocket, to facilitate the use of the next year.