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申请(专利权)人:西北农林科技大学;陕西昊威工贸有限公司申请日期:2008.02.01申请(专利)号:201010250930.4主分类号:C05G3/00(2006.01)I本发明公开了一种有机-无机复混肥料的制备工艺,将硝酸与褐煤反应完成后过滤分离,得到包含褐煤硝化腐植酸的有机质沉淀,再将褐煤硝化腐植酸与无机肥料进行配比,之后分别制备成褐煤硝化腐植酸盐-尿素次级肥料颗粒和褐煤硝化腐植酸盐-甲醛缓释复合颗粒,得到有机-无机复混肥料。褐煤经硝酸氧化后腐植酸、黄腐酸显著提高,能够降低腐植酸肥料生产成本,节约资源。该有机-无机复混肥料能够改善土壤养分状况、颗粒结构,满足作物生长需求。
Application Number 申请 号 201010250930.4 申请 (利利) 人): 西北 农林 科技 大学; 陕西 昊威 工 贸 有限公司 Date of application: 2008.02.01 申请 (Patent) No .: 201010250930.4 主要 記: The present invention discloses an organic - inorganic compound fertilizer preparation process, the reaction of nitric acid and lignite after filtration and separation, to obtain a lignite containing nitric acid humic acid organic precipitation, and then lignite nitration humic acid and inorganic fertilizers were ratio, respectively, were prepared into lignite nitration humic acid Salt - urea secondary fertilizer particles and lignite nitrification phytate - formaldehyde slow release composite particles, organic - inorganic compound fertilizer. Lignite by nitric acid oxidation of humic acid, fulvic acid significantly increased, can reduce the humic acid fertilizer production costs and save resources. The organic-inorganic compound fertilizer can improve soil nutrient status, grain structure, to meet the needs of crop growth.