Can salted urea be used as herbicide? Double the weeding efficiency? 4: 00. Is it useful?

In the process of planting crops, when it comes to weeding, farmers will think of two things. First, it is safer to use artificial weeding, and there will be no harm from herbicides. But it needs a certain amount of manpower, especially for large farmers, and the cost of manual weeding is higher.

Secondly, the method of spraying herbicides is adopted, which is a measure taken by most farmers, spraying special herbicides for crops to achieve the purpose of controlling weeds.

In addition to these two common weeding methods, a small number of farmers will choose "folk remedies". What is a "folk prescription"? For example, some people say that urea and salt can be used as herbicides, and some people say that this method is not bad.

Urea is a quick-acting nitrogen fertilizer, and salt is the salt we usually eat. Can these two things be put together to weed?

On this issue, the little helper inquired about the relevant information, and there is indeed an explanation for weeding on the Internet.

Weeding principle from two aspects.

First, urea can be topdressing or spraying. Excessive dosage will cause fertilizer damage to crops, thus achieving the effect of control.

If excessive urea is sprayed on crops, crops will suffer fertilizer damage, which may lead to crop death.

Similarly, if excessive urea is sprayed on weeds, it will also cause fertilizer damage to weeds, thus achieving the effect of weeding.

Secondly, when the leaves of plants are exposed to excessive salt water, plants will lose a lot of water due to the characteristics of salt. If sprayed on weeds, it will inhibit the growth of weeds through the characteristics of water loss, leading to weed death.

The mixed spraying of urea and brine has a good control effect on weeds under the joint action of urea and brine.

This is an idea mentioned on the Internet, so can it be applied in the actual process? Can the weeding efficiency be doubled?

1, the amount of the problem, see some articles that an acre of water 40 kg, 150 grams of urea and 50 grams of salt, the above said, only in the case of excessive use, will cause fertilizer damage, if an acre of 150 grams of urea, basically the same as normal use, can not meet the conditions of excessive use.

Similarly, 50 grams of salt per mu can not achieve the effect of excessive use.

2. If it is used in excess, such as 1000g urea and 500g salt for one mu of land, this amount is excessive. But in the process of spraying, what if it is guaranteed to be sprayed only on weeds and not on crops? Even if you wear a spray mask, there is no guarantee that it will not spray on the leaves of crops at all. It can be said that the operation is extremely difficult.

If weeds are sprayed one by one, it is better to pull them out directly.

3. Let's talk about pollution. Some people say that spraying herbicides for a long time will affect the ecological environment and destroy the soil. Is there such a problem with adding salt to urea? The answer is yes, if overused all the year round, it will also lead to soil salinization and hardening.

It is also very important that there are many kinds of herbicides on the market. Weeds are divided into broad-leaved weeds and pointed-leaved weeds. In the same weed category, there are many kinds of weeds in detail. Different weeds use different herbicides.

It is obviously impossible to control all weeds simply by using urea and adding salt. If this effect is really achieved, all herbicide manufacturers in the market can go out of business.

For example, Aegilops tauschii in wheat field, reed in corn field and sedge in corn field are perennial weeds, which are difficult to control. Even the use of herbicides can not guarantee the weeding effect, let alone the combination of urea and salt.

Combined with the above, it can be found that it is not a good idea to use salted urea as herbicide, and it is not recommended for farmers to use it. It's only a few dollars to buy an acre of herbicide, and it's only a dozen dollars for the more expensive ones. It may be cheaper to add salt with urea.

However, the best weeding effect cannot be achieved, which not only wastes the cost, but also delays the best weeding period, thus affecting the yield of subsequent crops. Under the guidance of a series of mistakes, the subsequent losses may be greater than the gains.

Another question, a friend will ask, if urea and salt are worried about fertilizer damage to crops, can they be used in wasteland? This is also not recommended. Herbicides used for weeding wasteland include glyphosate and glufosinate, which are effective for wasteland. If urea is salted, the above problems will occur. How much should I use? Low dosage, unable to achieve weeding effect; If the dosage is large, not only the weeding effect can not be guaranteed, but also the cost is not cheaper than the herbicide.

If you want to improve the weeding effect, you can buy some silicone additives and add them, which not only improves the weeding effect, but also is safe to use, so you don't have to worry about the phytotoxicity.

To sum up, it is not advisable to add salt to urea as a herbicide, and farmers are not advised to do so. It is best to buy special herbicides.

What do you think of this?