Title: Method for producing long-acting urea fertilizer with more trace elements
Application Number: 91112643 Application Date: 1991.12.29
Publication Number: 1073933 Publication Date: 1993.07.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C05C9/00,C05D9/02,C05G1/00
Applicant(s) Name: Xinjiang Biogenic Soil-Desert Inst., Chinese Acade Address: 830011
Inventor(s) Name: Huang Ziwei, Li Wenguang
Attorney & Agent: OU YONG LIU ZHEN
Abstract:
     The invented fertilizer features that saturated solution of Zn, Mn, Cu, Fe and Mo is added during urea synthesization and it is used as urease inhibitor and trace element fertilizer. Beside keeping the synthesizing process of conventional urea, a metering pouring unit including dissolving tank, liquid storage tank and metering pump is set up before evaporation of urine liquor. If it is applied to the soil whose urease activity is relatively high, the yield is still increased by 7-15.2% and the ratio of input to output is 1:25-50.
Time: 7