What are the forms of corn urea topdressing? What is the utilization rate of application, ditching and spraying?
There are many ways to use urea for topdressing corn. The most common one is the application, followed by the ditch, then the spray. Which method is better? This article will briefly talk about it.
1, spread
The friends who applied urea had a lot of money. I used to see a lot when I passed by in the field. The advantage of this method is that it is simple and convenient. It is a mess between urea and the line. It is very easy, one acre. It will not be used for a long time, but the shortcomings are also obvious. The waste is too serious. The urea is scattered in the ground. It is not that it will be absorbed by the corn immediately. It requires a process (in general, this process takes about 5 days, Depending on the field conditions, this time may be extended. The longer the time, the lower the urea utilization rate.
If the field is relatively dry, coupled with high temperature and high humidity in summer, the loss of urea will be further accelerated. However, some friends will water after the application, in order to melt the urea and absorb the corn. However, Urea will also be lost with water, or it will cause waste. In general, although it is convenient, it is not recommended.
2, ditch
Urea application in the ditch is advocated by the ditch. The method is to apply ditch between the rows of corn. However, when it is applied, it should be 8-10cm away from the root of the corn to avoid burning root. When the urea is applied, the soil is covered. At this time, when there is a drought in the field, watering is also beneficial to the absorption of corn. Although this method, urea will not be used 100%, but the utilization rate of the ditch has been greatly increased, if the field The lyrics are not bad, even under the premise of not watering, urea can be well absorbed, providing sufficient nitrogen for the growth of the corn cycle.
3, spray
Urea has a characteristic and is very soluble in water. Therefore, it can also be used for direct spraying. However, the most important point is the concentration of urea used. Because once it is excessive, there will be burning leaves. In terms of dosage, if it is ditch Or if you sprinkle, an acre of land, it is possible to use 10-15 kg, and the spray is much less, here the little helper does not say the concentration ratio (because many friends have no idea about this), directly speaking in the actual process Usage, the human back sprayer is generally 30 kg of water, according to the amount of water, the adult man's hand, grab a handful of urea, it can be (about a few or so), the amount is basically so much, in the process of spraying Do not re-spray.
Based on the above three points, corn can be sprayed with urea and applied with urea. If only two of them are analyzed, according to the actual situation, for friends who have not sprayed urea before, you can try to find a piece of land. Because the concentration is really difficult to grasp, if the previous spray of urea, feels OK, then continue to spray, it is recommended to be confused or do not know how to choose a friend, using a ditch is a good way .
In addition, when urea is applied, there are a few points to note:
1. The depth of the ditch should not be too deep or too shallow, and the depth of about 10cm can be used (depending on the situation in the field, there will be some differences).
2, the amount should not be too large, can not think of the more chasing, the better the corn growth, this is the wrong idea, too much will be counterproductive, 10-15 kg per mu.
3, topdressing should not be too late, the big trumpet period is the best, too late, it will lead to late maturity, not conducive to harvest, resulting in reduced production.
Regarding the use of urea, Xiaobian said so much. As for spraying, spreading, and ditching, the above has been basically made clear. The suggestion is that the ditch is given priority, but it can also be specifically selected according to its own specific situation. In this regard, Different positions are taken, and it can be said that there is no right or wrong. What do you want to say about this issue? What kind of topdressing method did you use in planting corn in previous years? You can share your message in the comments below.
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