Problems such as low nitrogen fertilizer utilization, improper fertilization, and loss of nitrogen fertilizers have caused problems such as environmental pollution that have not been effectively solved in China for a long time. However, with the application of peptide synergists in urea production, this situation will be greatly improved. During the “12th Five-Year Plan†period, China’s development of a resource-conserving, environment-friendly society put forward higher requirements for industrial and agricultural production and environmental protection, which also provided an excellent opportunity for the large-scale application of peptide urea. Zhang Xuejun, deputy general manager of Jiangsu Tianyin Chemical Co., Ltd., told reporters in an interview recently that the core substance of peptide synergists is polyaspartate actives. This green preparation is found in nature in the marine organism mucus with shells, such as oysters rely on this mucus to enrich the surrounding environment of calcium, magnesium and other elements to create shells or pearls. Polyaspartate actives are protein peptide chains and are also known as polypeptides because their molecular structure contains multiple peptide bonds. The peptide chain contains many carboxyl groups, which can form a relatively stable ring through hydrogen bonds with urea molecules, so as to control the slow release of urea nutrients in the soil, and play a synergistic and long-acting effect. In addition, it is able to synthesize salts with cations or anions under different microenvironment conditions, forming a nutrient-rich substance containing nitrogen, phosphorus, and potassium which is easily dissolved in water, and is easily absorbed by roots, stems and leaves of plants. It is understood that the annual application of nitrogen fertilizer equivalent to about 21 million tons of pure nitrogen, nitrogen through volatilization, leaching and runoff, the average loss of 45%, the annual loss of up to 9.45 million tons of nitrogen, equivalent to more than 20.5 million tons of urea. The large loss of nitrogen fertilizer has caused a series of environmental problems. In some highly agricultural areas of northern China, irrational use of nitrogen fertilizers has led to reports of excessive nitrate levels in groundwater. In the southern economically developed regions, excessive application of nitrogen and phosphate fertilizers has resulted in eutrophication of surface water and serious pollution of lakes. In addition, environmental issues such as excessive nitrate in vegetables, increased N2O emissions in the atmosphere, and occurrence of red tides in coastal cities are also related to the unreasonable use of fertilizers. Therefore, it is of great practical significance to increase the utilization rate of fertilizers and reduce the loss of chemical fertilizers. Peng Weifeng, Marketing Manager of Beijing Tianyin Ai Shihua Technology Co., Ltd., told the reporter that as early as 2003, the company had produced 50 tons of poly-aspartic acid-added polypeptide urea for wheat with Shandong Yucheng Zhongnong Runtian Chemical Co., Ltd. Field test. In June of the following year, they also launched the “Double Thousand Tons†(polypeptide) urea corn and cotton test in Lucheng. From the test results, the use of polypeptide-containing urea containing polyaspartic acid can increase the utilization rate of fertilizer by about 30%, and the average yield of crops by 10% to 15%, and can improve crop quality. Up to now, the combination of peptide synergists, nitrogen fertilizers, and compound fertilizers has achieved remarkable results in the application of more than 20 provinces and municipalities including Taiwan, and has generally increased production by 10% to 40%. According to reports, in the 90s of the last century, the American company Donlar took the lead in realizing the industrialization and commercialization of aspartic acid, and thus obtained the “Presidential Green Chemistry Challenge Award†of the United States in 1996. In China, the green Fengyuan polyaspartic acid synergist developed by Beijing Tianyin Aishua Technology Co., Ltd., a subsidiary company of Jiangsu Tianyin Company, was approved by the Ministry of Agriculture in 2001 and obtained a certification for the transformation of high-tech achievements in Beijing. High-tech industry new product certificate. Its annual output of 15,000 tons of polyaspartic acid device has won the National Spark Program project certificate, and in 2007 won the national invention patent certificate. Up to now, the product has been expanded and trial-produced on domestic backbone nitrogen fertilizer enterprises such as Shandong Runtian Company and Jiangsu Linggu Company, and normal production has been realized on large-scale devices. According to reports, the production of polypeptide urea does not need to change the existing production process. It only needs to open in front of the evaporator and quantitatively add synergist to the molten urea. The added amount is 2 to 3 kg per ton, which can be obtained after granulation. Finished product. It is reported that China Nitrogen Fertilizer Industry Association had sent a letter to Vice Premier Hui Liangyu recently, recommending that the state give policy support to promote the application of this fertilizer in large areas throughout the country. 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