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Chen Xiaohua: Development of Slow Controlled Release Fertilizers
In the current year, Vice Minister of Agriculture Chen Xiaohua emphasized that modern agricultural production models can deliver higher quality, safer, and more productive agricultural outputs. These models inevitably bring new demands for advanced chemical products like pesticides, fertilizers, and agricultural plastics, opening up new development opportunities. The author highlights that from the perspective of advancing modern agriculture, improving the efficiency of chemical fertilizer use, increasing the proportion of high-concentration fertilizers, and enhancing the compounding ratio are key factors in promoting the vigorous development of slow-release fertilizers.
Today, chemical fertilizers are evolving toward controllable nutrient efficiency, higher concentration of nutrients, a broader range of elements, better formulation, and improved balance. Accelerating technological upgrades in the fertilizer industry, expanding the product chain, developing high-end fertilizer varieties, and promoting the application of new types of fertilizers represent both opportunities and challenges for China’s fertilizer sector and agriculture.
Senior leadership in chemical fertilizer companies must strongly support and align with national agricultural policies. They should incorporate the development of premium fertilizers into their long-term strategic plans and commit to steady progress. Since 2000, China National Offshore Oil Corporation (CNOOC) has expanded into the downstream oil and gas industry, establishing the largest urea plant in China with an annual output of 800,000 tons. CNOOC’s senior leaders recognize the importance of the fertilizer industry through the political responsibility of state-owned enterprises. At the 2013 work meeting, they announced a focus on deepening fertilizer sector development. Today, the company has established specialized agrochemical service organizations, including research institutions, experimental sites, testing bases, and service teams. Company leaders regularly review and personally oversee agrochemical services such as soil testing, fertilizer research, and market expansion.
Fertilizer companies must overcome the challenges of producing high-end fertilizers. Currently, China’s fertilizer utilization rates are low—nitrogen at 30%, phosphorus at 20%, and potassium at 40%—far below developed countries’ levels of around 70%. A major cause of this inefficiency is leaching loss, particularly with nitrogen fertilizers. This loss leads to resource waste, increased farming costs, and environmental degradation. Therefore, the development of slow- and controlled-release fertilizer technology is a globally recognized solution to improve fertilizer efficiency. In December of last year, China Chemical successfully launched a 5,000-ton pilot plant for coated controlled-release fertilizer in Hainan. The company implemented innovative techniques such as solvent-free in-situ surface reaction film formation and side-injection swirl fluidized bed coating, achieving industrialization of controlled-release fertilizers without volatile solvents or environmental pollution.