Urea top dressing method and precautions
Urea is a neutral fertilizer used in various soils and crops. It is easy to store, easy to use, and has little damage to the soil. It is currently used with more fertilizer and is rich in nitrogen, but it is still used. A lot of things to pay attention to. So, how do you need to pay attention to what makes the utilization rate higher when using urea top dressing?
1, according to the soil
The soil is relatively fertile and relatively barren. The amount of fertilizer used will certainly be different. For example, the soil itself is very good. If the plant grown on it is very good, then urea does not need to be used. Too much, if the soil is poor and the crop yield is not high, the amount of urea can be slightly more.
2, as material needs
If you want to use urea, the utilization rate is higher, and the most important thing is to understand the demand of crops. In some of her specific periods, the demand for nutrients will be very large, and the words applied at this time can be better absorbed.
3, trenching and fertilizing
There is a lot of nitrogen in the urea. If it is directly sprinkled on the surface, most of it will be volatilized after four or five days, which is very wasteful. Especially when used on alkaline soil, the loss is even greater. Therefore, if you want to use urea, remember to dig trenches for fertilization. The depth of trenching should be at least 10 cm, so that you can better reduce losses.
4, do not pick up the crop
Urea is rich in nitrogen, relatively large in concentration, and has a certain ability to absorb moisture, so don't hold the crop too close when using it, otherwise it will burn out the seedlings and affect the growth of the crop. .
5, use time
The use of urea does not mean that it can be absorbed by crops right away. It also undergoes a process of transformation. Therefore, when it comes to the large amount of nitrogen required for crops, urea should be applied one week in advance, so that it can be better used by crops.
6, can not water immediately
At the beginning, it is also mentioned that urea is used. It is going through a conversion process. It is best not to water it in this process. Otherwise, it will cause the loss of urea. Generally, it will take three to five days and then the right amount. Watering.
Urea can be used not only at the time of applying the base fertilizer, but also when it is used in the late stage of topdressing. When the top dressing is used, the urea is used well, which is very helpful for the growth of crops and has obvious effects. Master the above six points, so that the utilization rate of urea is increased, so that the crops are well absorbed, high yield and high volume is not a problem!
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