Methylene Urea
Methylene Urea
CAS:
Molecular Formula:
Methylene Urea - Names and Identifiers
| Name | Methylene Urea |
| Synonyms | Methylene Urea 28-0-0 |
Methylene Urea - Prospects
product development prospects for liquid slow-release nitrogen fertilizers
liquid slow-release nitrogen fertilizer, as one of the products with the highest attention in the industry in recent years, has emerged many brands in two or three years, jokingly called "the whole people pull nitrogen".
At present, the varieties on the market are mainly pure liquid slow-release nitrogen fertilizer, or simple compounding with humic acid, alginic acid, etc. The popularization and application are mainly field crops such as wheat and corn. This also reflects the lack of R & D capability of most enterprises in China, mainly following the trend of imitation. Even a large part of the products are not actually liquid slow-release nitrogen fertilizer (urea formaldehyde).
many manufacturers promote their products "three nitrogen in one", that is, they contain amide nitrogen, ammonium nitrogen and nitrate nitrogen. in fact, the real liquid slow-release nitrogen fertilizer only contains two kinds of nitrogen, fast-acting nitrogen (amide nitrogen) slow-acting nitrogen (methylene urea nitrogen). The former is actually urea ammonium nitrate solution (UAN), and the latter is the real urea formaldehyde liquid slow-release nitrogen fertilizer.
due to the particularity of the products, a few enterprises such as Helena in the United States, Sadepan in Italy and green nonghua in Beijing can now provide liquid slow-release nitrogen fertilizer raw materials.
The initial appearance of liquid slow-release nitrogen fertilizer is also controversial. However, the focus of the dispute is not the product itself, but the exaggerated publicity and misleading of the product by individual enterprises. Let the mature products that have been promoted and applied abroad for decades have been questioned by many people at home.
Now with the calm of the market and the entry of more large enterprises, the market is gradually formalized. The advantages of liquid slow-release nitrogen fertilizer are recognized by more and more people.
Last Update：2023-08-16 23:22:23
Methylene Urea - R & D
As the fourth nitrogen source, liquid slow-release nitrogen fertilizer is under the current national policy of "one increase and two reductions". With the integration of water and fertilizer and the promotion of UAV fertilizer spraying technology, it will usher in explosive growth and there is a huge market demand. Domestic enterprises should develop products from the following two aspects.
⑴ As a high-efficiency nitrogen source supplement for liquid compound fertilizer
At present, the homogeneity of water-soluble fertilizer products in the domestic market is serious, and the products have no selling points. As a brand-new nitrogen source, liquid slow-release nitrogen fertilizer has the advantages of good mixing, full water solubility and long validity period. Based on this product, some high-content liquid cleaning fertilizers with both quick and slow can be developed, and some high-end foliar fertilizers or irrigation fertilizers with special effects can also be developed with medium and trace element fertilizers and functional components.
For example, Helena Company of the United States has developed a series of products based on liquid slow-release nitrogen fertilizers, such as 12-0-12,14-2-14,18-0-12,18-2-4,22-3-3,25-0-0-0.5B, etc.
due to the rich variety of biological stimulants, combined with the diversity of nutrients, a rich variety of new products can be developed.
⑵ As an auxiliary agent for flight defense and developing related flight defense products
liquid slow-release nitrogen fertilizer has the oiliness of polymer materials. some experiments have proved that it can not only be used as nitrogen fertilizer, but also reduce the evaporation of chemicals, increase the deposition amount of liquid medicine, and has the effect of flying prevention additives.
now the domestic flight prevention and plant protection has really entered a large-scale operation and ushered in an outbreak period. the service market space is about 50 billion yuan. in the future, the field flight prevention and plant protection market will increase at a rate of 10% every year, and the popularization period may reach a trillion yuan scale. However, aircraft spraying pesticides requires special additives. Domestic special additives are seriously insufficient, and fertilizers suitable for flight prevention are also seriously lacking.
liquid slow-release nitrogen fertilizer can be used as a fly anti-settling agent because of its low salt index and high safety. other fly spray fertilizers or additives can be developed on this basis.
Last Update：2023-08-16 23:22:23
Methylene Urea - Application
Practical application of 3. liquid slow-release nitrogen fertilizer
domestic products are mainly used as top dressing for wheat, corn and rice, and have achieved certain results. However, the application in fruit trees and other crops is still being explored.
here is mainly based on some foreign application data, to give you some suggestions and reference.
With conventional sprayers (including large electric sprayers), it is recommended to spray the solution (diluted) at 12-30 liters per mu; If it is a drone spray, it can be stock solution or a small amount of diluted water.
Relevant foreign materials give the usage and dosage of many crops such as apples, grapes, oranges, pears, peaches, leafy vegetables, fruits and vegetables, melons and vegetables, watermelons, cotton, corn, soybeans, garlic, onions, etc. The recommended dosage of stock solution at seedling stage or flowering stage is 0.5-1 liter/mu, and the vigorous growth period is 1.2-2 liters/mu. Apples are recommended at most 2-3 liters/mu after harvesting. According to this calculation, the maximum spray solution per mu is 30 liters, and the maximum amount of apple is 3 liters, which is 10 times diluted. If the minimum dosage is 0.5 liters, it is 60 times diluted. This means that the American recommended liquid slow-release nitrogen fertilizer spray dilution ratio is 10-50 times. The dilution ratio is larger at the seedling stage and smaller at the prosperous stage. If it is sprayed by unmanned aerial vehicle, the dilution ratio of 5 times is already a very high multiple.
In addition to foliar spraying, liquid slow-release nitrogen fertilizer is also recommended for drip irrigation systems.
The recommended dosage in Helena's product manual is:(1) Strawberry: 1.8-3.0 liters/mu each time, twice a month, continuous drip for 5-6 months. (2) Tomatoes/peppers: 1.8-3.0 liters/mu each time, twice a month for three to four months. (3) Grapes: 1.8-3.0 litres/mu each time, three times per season. (4) Lettuce: 1.8-3.0 liters/mu is applied for the first irrigation and repeated as many times as needed. (5) Trees and vines: in sandy soil, at least 3.0 liters/mu every 30 days. Use other drip irrigation fertilizers in combination. The specific application rate should take into account the amount of nitrogen required by crops, the amount of nitrogen supplied by soil and the amount of nitrogen provided by other fertilizers.
the emergence of liquid slow-release nitrogen fertilizer provides a new opportunity for our industry, but we do not know enough about it, and we need more enterprises to participate in the joint development of new products and explore application technologies.
In particular, the application of this piece cannot be copied from foreign usage. It is necessary to carry out experiments and demonstrations based on the actual conditions of Chinese soil, crops and fertilization, and explore application parameters and conditions suitable for national conditions.
the chaotic development of the past few years is that we are too eager for quick success and instant benefits.
Generally speaking, the emergence of liquid slow-release nitrogen fertilizer meets the needs of agricultural modernization, especially after the localization of liquid slow-release nitrogen fertilizer raw materials in Beijing Green Nonghua Hebei Cangzhou Base, and the participation of more companies with research and development capabilities, I believe that there will be more and more products based on "liquid slow-release nitrogen fertilizer" in the future, and I also believe that liquid slow-release nitrogen fertilizer will bring great development opportunities to our industry.
From Sohu.com https://www.sohu.com/a/400462866_286260
Last Update：2023-08-16 23:22:23