Recently, the reporter learned that a company in Inner Mongolia For nitro fertilizer project launched, but after round of research has found that the case did not imagine optimism. At present, the nitro compound is from small scale to large-scale, annual output of 600,000 to 100 tons of equipment continued production, and some companies are ready to put into operation in succession or nitro fertilizer project. But industry experts have reminded, nitro compound, although high-quality, but companies should be rational launched, can not only see the nitro compound of comparative advantage, but also to see the lack of it. Enterprises need to consider the raw material, market conditions and other aspects of comprehensive comparison make a decision. If the blind herd, nitro fertilizer industry easily become excessive.
Professor Zhang Chenglin crop nutrition and fertilization research director at South China Agricultural University introduced nitro compound is administered in the summer, experiencing excessive rainfall or excessive irrigation, nitrate leaching easy to root layer below, resulting in waste. The summer high temperature, fast urea hydrolysis, a part of urea ammonium hydrolyzed under the action of nitrifying bacteria will be converted to nitrate. In this case the effect of applying a nitro fertilizer urea may not be as good. In summer, the nitro compound and urea-based nitrogen fertilizer on crops make up the effect is the same, and the urea-based compound fertilizer fertilizer may be longer. From urea behavior in soil, the urea when applied to the soil, to become ammonium, nitrate becomes part of nitrification, so urea-based compound fertilizer has become part of the nitro compound into the soil. But nitro compound than urea-based compound fertilizer production of high energy consumption, high cost, from an economic point of view the use of nitrogen, urea lowest cost.
Zhang Chenglin noted that it was an objective understanding of nitro compound, to see both the advantages and disadvantages of the nitro compound can not be seen to sell fertilizer nitro, nitro compound to think what is good, rush to be launched. More importantly, for the season, crop, soil and irrigation conditions, rational application, take advantage of nitro fertilizer, to overcome its shortcomings. The main disadvantage of low nitrogen content of nitrogen fertilizer nitro compound is short, frequent rainfall in excess irrigation and leaching time easily.
Chinese Academy of Agricultural Sciences, said White by road nitro fertilizer and irrigation agriculture class facilities combine the best results. Nitro fertilizer determine the characteristics of available nitrate in fertilizer content is generally not more than 10%. Because if the content is too high nitrate fertilizers, can not be absorbed in time, it will be wasted, even when serious crop will bring some side effects.
At present, potassium nitrate-containing raw materials and potassium compound fertilizer program also launched alive. National Chemical Engineering Design Center Zhanfuzhanzhang ammonia tin show screen presentation, the major domestic use of ammonium nitrate and potassium nitrate production metathesis, although you can absorb the excess of ammonium nitrate, but the other main raw material potassium chloride in some areas cost is very high. Potassium chloride raw material prices affected the cost of large, restricted sales, high costs on the other hand the evaporation of ammonium chloride byproduct, some companies cost per ton of ammonium chloride was evaporated in $ 700, but chlorination Ammonium market price was less than 300 yuan per ton. Potassium nitrate market price of 4000 yuan per ton, compared to other high fertilizer prices, promote the use of facing high threshold, many farmers can not accept.
Tin Sau-screen reminder, enterprises launched potassium nitrate should be carefully considered. First of all we have advantages of raw materials, not only have ammonium nitrate, but also potassium chloride. It must be combined with its own conditions, adequate market research, especially around the market investigation, if there is a fixed user, can be launched from 30,000 to 50,000 tons / year project. It should be adapted to local conditions, because enterprise system should be developed and produced, do not blindly ahead.
Professor Zhang Chenglin believes that potassium nitrate is mainly used in foreign countries soilless cultivation of vegetables and flowers, few field applications. Foreign countries such as Chile SQM nitrate production company has advantages of raw materials, production costs are low, high domestic production costs of potassium nitrate, market prices are high.
Sichuan Golden Elephant Chemical Industry Group deputy general manager Li Xu early, said nitro compound fertilizer in line with the development trend, but the current fast pace of development, production capacity surplus. With the adjustment of the national energy structure, relying solely on outsourcing raw materials business has been difficult to survive, existing businesses should be in the variety, use, fertilization methods work hard, rather than to expand production capacity.