Chen Xiaohua: Development of Slow Controlled Release Fertilizers

On this year’s **, Vice Minister of Agriculture Chen Xiaohua made it clear that modern agricultural production models can provide better quality, safe, and high-yield agricultural products, and will inevitably bring new requirements for new chemical products such as pesticides, fertilizers, and agricultural plastics. New development opportunities. The author believes that from the perspective of promoting the development of modern agriculture, the key to improving the utilization rate of chemical fertilizers, the proportion of high-concentration chemical fertilizers, and the compounding ratio of chemical fertilizers is the key to vigorously developing slow-release fertilizers.

At present, chemical fertilizers are developing in the direction of controllable fertilizer efficiency, high concentration of nutrients, diversification of elements, compounding of components, and proportional coordination. Accelerating the technological upgrading of the fertilizer industry, extending the product industry chain, developing to high-end fertilizer varieties, and promoting the application of new types of fertilizers are opportunities and challenges facing China's current fertilizer industry and agriculture.

The senior management team of chemical fertilizer companies must firmly believe in, strongly support and closely cooperate with the national agricultural policy, and include the development of high-end fertilizers in the company's long-term development strategic plan, and make unremitting efforts to steadily advance it. China National Offshore Oil Corporation entered the oil and natural gas downstream industry since 2000, and it has established the largest scale urea plant (an annual output of 800,000 tons) in China. Senior leaders of CNOOC understood the significance of the fertilizer sector by fulfilling the political height of state-owned enterprises. At the 2013 work meeting, they proposed to intensively develop the fertilizer sector. At present, the company has set up specialized agrochemical service organizations, including scientific research units, experimental sites, test bases, and service teams. The company's leaders listen carefully to the work of agrochemical services every year and personally inspect and supervise the agrochemical services such as soil testing and fertilizer, research on new fertilizers, and market development.

Fertilizer companies must break through the bottleneck of high-end fertilizer production. The utilization rate of chemical fertilizers in China is low, nitrogen is 30%, phosphorus is 20%, and potassium is 40%, far lower than the level of developed countries (about 70%). The main reason for low fertilizer utilization is leaching loss, and nitrogen fertilizer is the most obvious. The loss of fertilizer directly causes waste of resources, increases planting costs, and leads to land consolidation. Therefore, the development of slow and controlled release fertilizer technology is an effective method commonly used by countries in the world to increase fertilizer utilization. In December last year, China Chemical successfully produced a 5,000 tons of coated controlled-release fertilizer pilot plant in Hainan, and successfully implemented the technology of using solvent-free in-situ surface reaction film formation and side-injection swirl fluidized bed coating to manufacture controlled-release fertilizer. Industrialization, the technology has achieved controlled-release fertilizers that produce no volatile solvents and no environmental pollution.