N in Urea

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UREA

n in urea is a white crystal and is a product of animal protein metabolism.

Industrial manufacturing method:

Production method: In industry, liquid ammonia and carbon dioxide are used as raw materials to directly synthesize urea under high temperature and high pressure conditions. 

n in urea Purpose:

Rice seed production

In the technology of hybrid rice seed production, in order to improve the rate of cross pollination between parents and increase the production of hybrid rice or sterile lines, it is generally used to spray red toxin on the mother parent to reduce the degree of neck wrapping or completely extract it; Or spray the parent plant to regulate their growth and synchronize their flowering periods. Due to the high price of gibberellin, the cost of seed production using it is high. People use urea instead of gibberellin in experiments, using 1.5% -2% urea during the peak and initial heading stages (20% heading). The breeding effect is similar to gibberellin and does not increase plant height.

Preventing and controlling insect pests

Mixing urea, laundry detergent, and water in a ratio of 4:1:400 can prevent pests such as aphids, spider mites, and cabbage caterpillars on fruit trees, vegetables, and cotton, with a insecticidal effect of over 90%.

Storage Attention Editing of n in urea:

1. If urea is stored improperly, it is prone to moisture absorption and clumping, affecting the original quality of urea and causing certain economic losses to farmers. This requires farmers to store urea correctly. Before use, the urea packaging bag must be kept intact and undamaged. During transportation, it should be handled with care, protected from rain, and stored in a dry, well ventilated place with a temperature below 20 degrees Celsius.

2. If it is stored in large quantities, wooden blocks should be used to support it by about 20 centimeters, and there should be a gap of more than 50 centimeters between the upper part and the roof to facilitate ventilation and moisture dissipation. Passages should be left between stacks. To facilitate inspection and ventilation. If the urea that has already been opened is not used up, be sure to seal the bag mouth in a timely manner for next year's use.

3. Avoid contact with skin and eyes.

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