自80年代中期以来、化肥行业出现了几次大起大落，如何使化肥企业跨行业发展，实现产品多元化，增强化肥企业的竞争能力和抗风险能力，不断提高经济效益，是我国化肥工业当前面临的一个重要课题。本期刊登了我省中原化肥厂元玉新撰写的《大型尿素装置联产三聚氰胺》一文，介绍 Since the mid-1980s, there have been several ups and downs in the chemical fertilizer industry. How to make chemical fertilizer enterprises develop across industries, diversify their products, enhance the competitiveness and anti-risk ability of chemical fertilizer companies, and continuously improve their economic benefits are the major problems faced by China’s fertilizer industry An important issue. This issue published in the province of Zhongyuan Chemical Fertilizer Yuan Yu new book, “large-scale urea plant co-production of melamine,” a paper, introduced