Urea From Newalltrade co,. ltd

What is the role of urea? If you do not understand the function and purpose of urea, it may lead to twice the effort, or even fail to achieve the desired effect.

Urea is a nitrogen fertilizer with a relatively high nitrogen content. The most important element for crop growth is nitrogen fertilizer. If the growth of crops is not ideal, it must be lack of nitrogen fertilizer. In fact, this is not the case. If you know the role and effect of nitrogen fertilizer, you will use urea reasonably.

1: the nature of urea

Urea is a very important fertilizer and one of the most common nitrogen fertilizers farmers apply to crops. The nitrogen content in urea is about 46%, which is the highest nitrogen content among all solid fertilizers. Urea is a neutral fertilizer, suitable for all kinds of soils, but also for any plant. It is easy to store, easy to transport, and has less damage to the soil. It is also the most widely used nitrogen fertilizer in agricultural production.

2: the role and use of urea

(1): Urea can play a role in promoting crop growth. Nitrogen in urea is one of the nutrient elements necessary for crop growth and development. If the crops lack nitrogen fertilizer, the color of the plants will be lighter, and the old leaves at the base will turn yellow; the stems of the crops are thin and weak; there are few branches or tillers, and the crops will appear premature senescence; if the fruit trees are lacking nitrogen fertilizer, it will lead to The fruit of the fruit tree is small, the fruit is few, and the peel is thick and hard.

(2): Urea can promote the development of new shoots in the growing season of crops. During the growth stage of crops, applying urea to crops can promote the development of new shoots of crops (especially fruit trees). The use of urea on crops can increase the nitrogen content of crop leaves, accelerate the growth of new shoots and inhibit flower buds.

(3): Urea is applied as a foliar fertilizer, which can supplement fertilizer for crops and kill pests at the same time. After dissolving urea and washing powder in water and spraying the crops on the foliage, it can quickly supplement fertilizers to the crops and effectively kill some pests. The killing performance of cabbage caterpillars, aphids, red spiders and other soft-bodied pests reaches more than 90%. As a neutral fertilizer, urea is easily absorbed by leaves and has very little damage to crops.

3: the use of urea contraindications

Although urea is a good fertilizer, there are also some taboos in its use. If used improperly, it will reduce the fertilizer efficiency of urea, and even cause fertilizer damage to crops, affect the growth of crops, and even cause crop yield reduction.

(1): Use before rain. Many farmers believe that urea is easily soluble in water. Using urea on crops before rain can promote the good dissolution of urea and help crops absorb it. In fact, this will cause the loss of fertilizer efficiency of urea. When urea dissolves in rainwater, ammonia gas will be produced, resulting in the loss of nitrogen, and urea will be washed away by rainwater.

(2): Topdressing with urea in the later stage of crop growth. Many farmers use urea for topdressing in the later stages of crop growth, thinking that this can quickly supplement the nitrogen fertilizer the crops need. However, in the later stage of crop growth, try not to use nitrogen fertilizer for top dressing. This will make the crops grow too vigorously, such as corn, wheat, etc., will cause lodging; and cabbage, cabbage, etc., will cause the heart to delay and so on.

(3): Mixed application with alkaline fertilizer. Some farmers think that urea is a pure nitrogen fertilizer, so they think that it can be mixed with other fertilizers to ensure more comprehensive nutrition of crops. However, if urea and alkaline fertilizer are mixed and applied, it will cause the decomposition of urea, produce a large amount of ammonia gas, and cause the loss of nitrogen.