As a fast-acting amine nitrogen fertilizer, urea needs to be converted into ammonia nitrogen after being applied to the soil to be absorbed and utilized by crops. Under normal circumstances, it can be completed in 2 to 7 days. Based on this characteristic of urea, after urea is applied, it must not be watered before it is converted. Therefore, after fertilizing the crops, it is recommended to irrigate for 2 to 3 days in the summer and then for 4 to 7 days in the winter.
So how to improve the utilization rate when applying urea?
1. When applying urea to the topdressing crops, it is best to apply the ditch or the hole to the soil for about 10 cm, which can reduce the volatilization of urea, which is beneficial to the timely conversion of urea and is beneficial to be absorbed by the crop.
2, urea is a neutral fertilizer, do not mix with alkaline fertilizer when topdressing, so as not to reduce fertilizer efficiency.
3, urea nitrogen content is high, about 45%, so the application rate should not be too large, so as not to cause fat damage. Generally, 520 kg per mu is applied, and 1520 kg per mu is applied to the paddy field. Excessive application, can not be absorbed by the soil before conversion to ammonium bicarbonate, easily leached by rain, and easily damage crops. If it is not absorbed by the crop in time, it will cause water pollution as the groundwater seeps into the ground.
4. Urea is the best effect of all nitrogen fertilizers used as foliar fertilizer. Spraying urea, the amount and speed of synthetic protein in crops are higher than other nitrogen fertilizers, but the spraying concentration should not be too large, otherwise it will cause burning of leaves and other phytotoxicity. . Generally, the concentration of corn, wheat, rice and cotton is 2%; vegetables and fruits are suitable for 0.5-1%; fruit trees are preferably 0.5-1.5%.
5, the timing of urea is usually used in the early stage of crop growth, because urea contains high nitrogen content, and the growth of crops requires more nitrogen in the early stage, which is conducive to crop growth, and if the urea is used in the later stage of the crop, it will cause crops to be late and ripe. Conducive to crop maturity.
6. Urea is mainly composed of urea, and crop growth requires a variety of nutrients to be completed. Therefore, urea can be used as a top dressing, but it should be used in combination with other compound fertilizers and organic fertilizers, which can greatly improve fertilizer utilization.
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Dried Squids are a popular snack in many Asian countries, especially in Japan, Korea, and Thailand. They are made by cleaning and drying fresh squids until all the moisture is removed, resulting in a chewy and flavorful snack.
Pure dried squids are made without any additional flavorings or seasonings, so they have a natural taste that is slightly salty and briny. They are often served as a bar snack or as a topping for rice dishes, noodles, or salads.
Dried squids are a good source of protein and low in fat, making them a healthier snack option than many other processed snacks. They are also rich in vitamins and minerals, including vitamin B12, selenium, and phosphorus.
Overall, dried squids are a tasty and nutritious snack that can be enjoyed on their own or used as a flavorful ingredient in many dishes.
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