Title: Non-deliquescent rare earth microelement fertilizer and preparation thereof
Application Number: 90107743 Application Date: 1990.09.18
Publication Number: 1051545 Publication Date: 1991.05.22
Approval Pub. Date: Granted Pub. Date: 1993.03.31
International Classifi-cation: C05C9/00,C05D9/02
Applicant(s) Name: Sichuan Univ. Address: 610064
Inventor(s) Name: Li Yankun, Min Weizong
Attorney & Agent: XU SHUFANG
Abstract:
     The present invention relates to a rare earth trace-element fertilizer which uses rare earth compound and urea-nitric acid as raw materials and the manufacturing method thereof. Both the adopted raw materials are non-deliquescent solid. easy to store, transport and use. The on-the spot compounding method is adopted. It can not only thoroughly overcome the deliquescent disadvantage of existent agricultural rare earths, but also keep their performances and improve the method and ability for regulating PH value. Its contained urea can raise fertilizer effect, therefore it can be substituted for water-soluble rare earth salts and used for agricultural production thereby obtaining same or better effects.
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