Title: Acidity nutrient film long-effect nitrogenous fertilizer
Application Number: 91107129 Application Date: 1991.02.01
Publication Number: 1063672 Publication Date: 1992.08.19
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C05C9/00
Applicant(s) Name: Nature Source Inst., Sichuan Prov. Address: 610015
Inventor(s) Name:
Attorney & Agent: CHEN ZHILUN
Abstract:
     The invention relates to a kind of wraped fertilizer where in the core is nitrogenous fertilizer, while the water bond sulfer salt is the main content of outside wrapped film. The outside film is acidic and PH valus is 3-6. The proportion of core grain nitrogenous fertilizer to outside film is 100:2.5-1.10 by wt. The said fertilizer preparation method includes the making of filmogen, wraping of film and solidifying of film. By using the said fertilizer, it can restrain the hydrolysis and decomposition of nitrogenous fertilizer, reduee the loss of ammonia due to evaporation, protect and rise the reward more than 50%. The trace element of cutside film can increase and improve the nutrient of corp and to lift up the production by 10%-50%. All the operation is done under normal temp, and no need of adhesive or any special equipment. The investment is less and cost is low.
Time: 6