Nitro compound fertilizer is becoming a development trend, and blind expansion of production may have risks

wallpapers Industry 2020-12-09

recently, it is understood that an enterprise in Inner Mongolia intends to start a nitro fertilizer project, but after a round of investigation, it is found that the situation is not as optimistic as expected. At present, the production scale of nitro compound fertilizer is changing from miniaturization to large-scale. The plants with an annual output of 600000-1 million tons are continuously put into operation, and some enterprises are also in succession or preparing to put into production nitro fertilizer projects. However, experts in the industry remind that although nitro compound fertilizer is of high quality and high efficiency, enterprises should start rationally, not only to see the comparative advantages of nitro compound fertilizer, but also to see its shortcomings. Enterprises need to consider the raw materials, market and other aspects of conditions, comprehensive comparison before making a decision. If we blindly rush in, nitro fertilizer will easily become a surplus industry. Professor Zhang Chenglin, director of crop nutrition and fertilization research office of South China Agricultural University, said that when nitro compound fertilizer was applied in summer, excessive rainfall or excessive irrigation would easily leach nitrate nitrogen below the root layer, causing waste. In summer, the temperature is higher, and the urea hydrolysis is fast. Part of the ammonium nitrogen after urea hydrolysis will also be converted into nitrate nitrogen under the action of nitrifying bacteria. At this time, the effect of nitrogenous fertilizer may not be as good as that of urea. In summer, the effect of nitro compound fertilizer and urea based compound fertilizer on crop nitrogen supplement is the same, and the urea based compound fertilizer may be more effective. According to the behavior of urea in soil, when urea is applied to soil, it first turns into ammonium nitrogen, and part of nitrification turns into nitrate nitrogen. Therefore, urea based compound fertilizer also becomes part of nitro compound fertilizer after entering the soil. However, nitro compound fertilizer has higher energy consumption and higher cost than urea based compound fertilizer. From the perspective of economic utilization of nitrogen, the cost of urea is the lowest. Zhang Chenglin of

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pointed out that we should have an objective understanding of nitro compound fertilizer, and at the same time, we should also see the advantages and disadvantages of nitro compound fertilizer. If we can't see that nitro compound fertilizer is easy to sell, we should think that nitro compound fertilizer is good and all kinds of things are good. The most important way to overcome the shortage of nitro fertilizer is to apply nitro fertilizer to the soil. The main drawback of nitro compound fertilizer with low and medium nitrogen content is short fertilizer efficiency of nitrogen and easy leaching when excessive irrigation and frequent rainfall occur.

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Bai Youlu, Chinese Academy of Agricultural Sciences, also said that the combination of nitrogenous fertilizer and drip irrigation facilities agriculture has the best effect. The quick acting characteristics of nitrogenous fertilizer determine that the content of nitrate nitrogen in fertilizer is generally less than 10%. If the content of nitrate nitrogen in fertilizer is too high to be absorbed in time, it will also cause waste and even bring some side effects to crop growth.

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at present, the project of compound fertilizer containing nitrate nitrogen and potassium based on potassium nitrate is also put into operation, and the heat is not reduced. Xi Xiuping, deputy director of national chemical ammonia design center station, introduced that at present, the double decomposition method of ammonium nitrate and potassium chloride is mainly used in China to produce potassium nitrate. Although the surplus ammonium nitrate can be digested, the cost of obtaining another main raw material potassium chloride in some areas is very high. The market price of potassium nitrate is greatly affected by the cost of raw material potassium chloride, and the sales are restricted. On the other hand, the evaporation cost of by-product ammonium chloride is high. In some enterprises, the evaporation cost of ammonium chloride is 700 yuan per ton, but the market price of ammonium chloride is less than 300 yuan per ton. The market price of potassium nitrate is more than 4000 yuan per ton, which is higher than the market price of other compound fertilizers, and the threshold of popularization and application is high, which is unacceptable to many farmers. The

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screen reminds that enterprises should carefully consider potassium nitrate. First of all, we should have the advantages of raw materials, not only ammonium nitrate, but also potassium chloride. It is necessary to conduct sufficient market research in combination with its own conditions, especially in the surrounding market. If there are fixed users, the project of 30000-50000 tons / year can be launched. We should develop and produce in accordance with local conditions and enterprises' conditions, and should not blindly start production. Professor Zhang Chenglin of

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believes that potassium nitrate is mainly used in soilless cultivation of vegetables and flowers abroad, but rarely used in the field. For example, sqm company in Chile has the advantages of raw materials and low production cost in the production of potassium nitrate, while the domestic production cost of potassium nitrate is high and the market price is also high. Li xuchu, deputy general manager of

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Sichuan Jinxiang chemical industry group, said that nitro compound fertilizer is in line with the development trend of chemical fertilizer, but the current development pace is too fast and there is excess capacity. With the adjustment of the national energy structure, it is difficult for enterprises relying solely on purchased raw materials to survive. Existing enterprises should make efforts in variety, use and fertilization methods instead of expanding production capacity.


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