【摘要】 利用有机无机 (矿物 )控释材料对尿素进行改性 ,制成改性尿素。盆栽试验结果显示 ,在等重条件下 ,改性尿素较普通尿素有较大幅度的增产效果。运用X射线衍射及红外光谱分析对改性尿素的结构进行研究 ,发现其晶体结构发生了较大变化 ,增加了改性尿素的稳定性 ,从而延长了其肥效并提高了氮的利用率更多还原

【Abstract】 Organic_inorganic (minerals) controlled release material was used to modify urea and develop two new kinds of controlled release N fertilizers—modified urea. The result of potted plant shows that two modified kinds of urea are better than the normal urea under the condition of equal weight. XRD and IR were also used to analyze the crystal structure of the new kinds of modified urea, and found that their crystal structure changed greatly. It is the crystal structure change that increases the stability of modified urea. In this way we can raise the fertilizer efficiency and increase the utilization ratio of N.更多还原