Title: Biological composition fertilizer and its production method
Application Number: 90106002 Application Date: 1990.12.25
Publication Number: 1062893 Publication Date: 1992.07.22
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C05F11/08,C05F17/00
Applicant(s) Name: East Technology Industrial Co. of China Address: 100036
Inventor(s) Name: Li Wei, Shi Changlin
Attorney & Agent: CHENG JINYU
Abstract:
     This invention relates to a granular biological compound fertilizer having the function of fixing nitrogen. Its productive steps include mixing such components together as potassium dihydrogen phosphate, agricultural rare-earth elements, trace elements, ammonium carbonate, and the salts of K, Mg and Na, regulating pH value to 6.7-7.2, addition of azotobacter and adhesive, prilling and coating quelified granules with phosphoric mixture. Such compound fertilizer features stable properties, less moisture absorption and efficient and durable fertility.
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