Title: Stick type capsule long efficiency fertilizer for tree and preparation process therefor
Application Number: 89100586 Application Date: 1989.02.17
Publication Number: 1042142 Publication Date: 1990.05.16
Approval Pub. Date: Granted Pub. Date: 1992.09.09
International Classifi-cation: C05G1/06,C05G3/00,C05G5/00
Applicant(s) Name: Beijing Inst. of Gardens Science Address:
Inventor(s) Name:
Attorney & Agent: WANG DEZHEN
Abstract:
     This bar-shaped long-acting enveloped furtilizer is composed of two parts: fertilizer and outer clothing sheet. The components of fertilizer are urea, ammonium phosphate, potassium sulfate and potassium chloride. The clothing sheet is a nail-shaped hollow box made up by inclined coiling of multilayer cardboard, which are covered by a layer of crepe paper and further a porous anti-osmosis film of polymer material. By burying this bar furtilizer under ground its useful life can last out one year.
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