The slow and controlled release fertilizer, which represents the development trend of the world's fertilizers, has always been called “noble fertilizer†because of its high cost, high price, and small scale. Its core technology was only controlled by the hands of a few countries such as the United States and Japan before the 1990s. How to promote the overall optimization and upgrading of industrial technology, reduce production costs, and promote the application of slow-release fertilizer in China's field crops? After 13 years of cooperation, Shandong Agricultural University and Shandong Jinzhengda Group finally achieved a major breakthrough in the core technologies and industrialization of controlled-release fertilizers.
At present, China has become the world's largest producer and consumer of chemical fertilizers. It uses 35% of the world's chemical fertilizers to account for 9% of the world's arable land. However, the substantial increase in fertilizer use has not resulted in a corresponding increase in crop yields. Faced with the continuous decline in the utilization rate of chemical fertilizers and the resulting environmental problems such as surface water and groundwater pollution and lake eutrophication, the project leader, Zhang Min, Shandong Agricultural University, frankly stated that the nutrients are controlled by various regulatory mechanisms. Pre-determined release rates and controlled-release fertilizers with slow release or controlled release are the most economical and effective ways to solve these problems.
Zhang Min pointed out that after the 1970s, many units in China began to study the slow and controlled release fertilizers. However, some key technologies and processes in production are still not perfect. Some research results are only in the laboratory or pilot stage. The large-scale production of controlled-release fertilizers before the industrialization of the project has not been realized. Their research began in 1996. At the beginning of the project, they focused on solving the two key issues of the quality and price of controlled-release fertilizers. On the one hand, innovative work starts from the technology, studies the mechanism of slow-release fertilizer control, ensures the advanced nature of the technology, and the developed and developed fertilizer products must have self-control functions so that the fertilizer release can be consistent with the crop demand, and the fertilizer utilization rate can be increased. Become a high-tech carrier; on the other hand, from an economic point of view, reduce production costs as much as possible, so that it meets the actual needs of China's agricultural production.
In the 13 years of exploration, they overcame key technical challenges such as the selection, combination and formulation of coating materials, coating technology, and parameter adjustment in large-scale industrialization, synchronization of nutrient release from slow and controlled release fertilizers, and crop absorption, etc. The production process of controlled-release fertilizer with different coating materials for thermoplastic resin, thermosetting resin, thermoplastic and thermosetting resin multi-layer composite, sulfur and sulfur plus resin 4 sets of 12 coated controlled-release fertilizer series nearly 100 varieties. Formed a controlled-release fertilizer production technology system with China's independent intellectual property rights. According to expert assessment, this achievement ranks at the international advanced level in the same type of research. It recycles waste thermoplastic resin coated film, sulfur modified resin coated film, thermoplastic and thermosetting resin multilayered composite film, solvent efficient recovery, product testing and quality. Control and other technologies and large-scale industrial development have reached internationally advanced levels.
Zhang Min said that compared with traditional fertilizers, the nitrogen utilization rate of the products they developed can be increased by more than 50%, and the consumption can be reduced by 1/3 or 1/2, which can still increase production. Farmers can save on the premise of not increasing fertilizer input. Composting fertilizers, and controlled-release fertilizers can be applied at one time with sowing, which not only saves energy for fertilizer production, a lot of transportation and fertilizer costs, but also reduces nitrogen evaporation, leaching, and pollution of the environment and groundwater. Effectively protect the ecological environment.
He told reporters that the implementation of this project has provided technological support for the upgrading of China's chemical fertilizer products and has driven the development of related industries. Relying on the core technology invented by this project, the world's largest and most diverse controlled-release fertilizer production base has been built. The annual production capacity of the three application companies has reached 850,000 tons, and the domestic market share of the project's products has reached more than 60%, accounting for more than 20% of the world's total controlled-release fertilizer, which has enhanced China's status in the international fertilizer industry.
In addition, in order to standardize the slow-release fertilizer market and protect the interests of the slow- and controlled-release fertilizer producers and farmers, the project team has also formulated the “relative and slow-release fertilizer†industry standards and the “sustained-release fertilizer†national standards and promoted the technology of the entire industry. Progress and development by leaps and bounds.
According to Wan Lianbo, chairman of the Shandong Kim Jongda Group and director of the National Engineering Technology Research Center for Controlled Release Fertilizers, the Jinzheng Group has achieved large-scale, multi-variety, automated, low-cost, high-efficiency production of controlled-release fertilizers, and has achieved annual production. The production capacity of 600,000 tons of controlled-release fertilizer has become the largest production base of controlled-release fertilizer in Asia. The project also obtained 101 patents, including 73 invention patents, 92 newly applied patents and 10 international patents. The controlled-release fertilizer produced by Kim Jongda has been sold to more than 20 domestic provinces (regions). Some products have been exported to Australia, Malaysia, South Korea, the United States and other countries and regions. After several years of promotion, the Jinzhengda Group has cumulatively demonstrated and promoted 22 million mu in the country, adding new economic benefits of 5 billion yuan, and achieved remarkable economic, social, and ecological benefits.
Talking about the future development, Zhang Min stated that they will continue to innovate in the aspects of membrane materials, controlled release quality, etc., to cultivate China's controlled release fertilizer industry clusters, realize large-scale industrial production, and enable China's slow-release fertilizer products to enter thousands of countries. Tens of thousands of households can make farmers use high-tech slow-release fertilizers.
At present, China has become the world's largest producer and consumer of chemical fertilizers. It uses 35% of the world's chemical fertilizers to account for 9% of the world's arable land. However, the substantial increase in fertilizer use has not resulted in a corresponding increase in crop yields. Faced with the continuous decline in the utilization rate of chemical fertilizers and the resulting environmental problems such as surface water and groundwater pollution and lake eutrophication, the project leader, Zhang Min, Shandong Agricultural University, frankly stated that the nutrients are controlled by various regulatory mechanisms. Pre-determined release rates and controlled-release fertilizers with slow release or controlled release are the most economical and effective ways to solve these problems.
Zhang Min pointed out that after the 1970s, many units in China began to study the slow and controlled release fertilizers. However, some key technologies and processes in production are still not perfect. Some research results are only in the laboratory or pilot stage. The large-scale production of controlled-release fertilizers before the industrialization of the project has not been realized. Their research began in 1996. At the beginning of the project, they focused on solving the two key issues of the quality and price of controlled-release fertilizers. On the one hand, innovative work starts from the technology, studies the mechanism of slow-release fertilizer control, ensures the advanced nature of the technology, and the developed and developed fertilizer products must have self-control functions so that the fertilizer release can be consistent with the crop demand, and the fertilizer utilization rate can be increased. Become a high-tech carrier; on the other hand, from an economic point of view, reduce production costs as much as possible, so that it meets the actual needs of China's agricultural production.
In the 13 years of exploration, they overcame key technical challenges such as the selection, combination and formulation of coating materials, coating technology, and parameter adjustment in large-scale industrialization, synchronization of nutrient release from slow and controlled release fertilizers, and crop absorption, etc. The production process of controlled-release fertilizer with different coating materials for thermoplastic resin, thermosetting resin, thermoplastic and thermosetting resin multi-layer composite, sulfur and sulfur plus resin 4 sets of 12 coated controlled-release fertilizer series nearly 100 varieties. Formed a controlled-release fertilizer production technology system with China's independent intellectual property rights. According to expert assessment, this achievement ranks at the international advanced level in the same type of research. It recycles waste thermoplastic resin coated film, sulfur modified resin coated film, thermoplastic and thermosetting resin multilayered composite film, solvent efficient recovery, product testing and quality. Control and other technologies and large-scale industrial development have reached internationally advanced levels.
Zhang Min said that compared with traditional fertilizers, the nitrogen utilization rate of the products they developed can be increased by more than 50%, and the consumption can be reduced by 1/3 or 1/2, which can still increase production. Farmers can save on the premise of not increasing fertilizer input. Composting fertilizers, and controlled-release fertilizers can be applied at one time with sowing, which not only saves energy for fertilizer production, a lot of transportation and fertilizer costs, but also reduces nitrogen evaporation, leaching, and pollution of the environment and groundwater. Effectively protect the ecological environment.
He told reporters that the implementation of this project has provided technological support for the upgrading of China's chemical fertilizer products and has driven the development of related industries. Relying on the core technology invented by this project, the world's largest and most diverse controlled-release fertilizer production base has been built. The annual production capacity of the three application companies has reached 850,000 tons, and the domestic market share of the project's products has reached more than 60%, accounting for more than 20% of the world's total controlled-release fertilizer, which has enhanced China's status in the international fertilizer industry.
In addition, in order to standardize the slow-release fertilizer market and protect the interests of the slow- and controlled-release fertilizer producers and farmers, the project team has also formulated the “relative and slow-release fertilizer†industry standards and the “sustained-release fertilizer†national standards and promoted the technology of the entire industry. Progress and development by leaps and bounds.
According to Wan Lianbo, chairman of the Shandong Kim Jongda Group and director of the National Engineering Technology Research Center for Controlled Release Fertilizers, the Jinzheng Group has achieved large-scale, multi-variety, automated, low-cost, high-efficiency production of controlled-release fertilizers, and has achieved annual production. The production capacity of 600,000 tons of controlled-release fertilizer has become the largest production base of controlled-release fertilizer in Asia. The project also obtained 101 patents, including 73 invention patents, 92 newly applied patents and 10 international patents. The controlled-release fertilizer produced by Kim Jongda has been sold to more than 20 domestic provinces (regions). Some products have been exported to Australia, Malaysia, South Korea, the United States and other countries and regions. After several years of promotion, the Jinzhengda Group has cumulatively demonstrated and promoted 22 million mu in the country, adding new economic benefits of 5 billion yuan, and achieved remarkable economic, social, and ecological benefits.
Talking about the future development, Zhang Min stated that they will continue to innovate in the aspects of membrane materials, controlled release quality, etc., to cultivate China's controlled release fertilizer industry clusters, realize large-scale industrial production, and enable China's slow-release fertilizer products to enter thousands of countries. Tens of thousands of households can make farmers use high-tech slow-release fertilizers.
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