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1993年12月27日,由新疆化工设计研究院承担的“新疆中、低品位磷矿制多元复合液肥”)小试)项目在自治区科委主持的鉴定会上通过了鉴定。新疆化工设计研究院高级工程师吴昌华同志经多年潜心研究,以P_2O_5含量低于20%的低品位磷矿为原料,经酸化、萃取、以及中和等过程,制得多元复合液肥。液肥含N14%,P_2O_55.5%,K_2O5.5%,其它0.4%。由于螯合技术的采用,提高了抑制金属微量元素生成难溶盐和防止金属离子水解的能力,螯合态微量元素容易被作物吸收和利用。
December 27, 1993, Xinjiang Chemical Design and Research Institute bear “Xinjiang, low-grade phosphate rock multi-compound liquid fertilizer ”) a small project) in the autonomous region Science and Technology Commission presided over the appraisal by the identification. After years of painstaking research, Comrade Wu Changhua, a senior engineer of Xinjiang Chemical Design and Research Institute, made low-grade phosphate rock with P2O5 content less than 20% as raw material, and obtained multiple compound liquid fertilizer by acidification, extraction and neutralization. Liquid fertilizer contains N14%, P_2O_55.5%, K_2O5.5%, other 0.4%. Due to the adoption of chelation technology, the ability of inhibiting the formation of hardly soluble salts of metal trace elements and preventing the hydrolysis of metal ions is enhanced, and the chelated trace elements are easily absorbed and utilized by crops.