A METHOD OF SLOW-RELEASE FERTILIZER BY USING NATURAL ZEOLITE FOR CROPS UNDER MULCHING CULTIVATION

摘要

PURPOSE: A delayed action fertilizer for mulching cultivation crops using zeolite and a method for preparing the same are provided to minimize the input of labor and the loss of fertilizing components by absorbing ammonium ions and potassium ions on the fine pores of natural zeolite. CONSTITUTION: A delayed action fertilizer for mulching cultivation crops is obtained by absorbing ammonium ions and potassium ions on natural zeolite. A method for manufacturing the delayed action fertilizer includes the following: Natural zeolite particles are alternatively immersed in an 1M of ammonium sulfate solution or an 1M of potassium chloride solution for 2 to 10 days. The interval of the immersion of the natural zeolite is 20 to 25 hours. The natural zeolite includes mordenite and clinoptilonite. Muscovite is further included in the natural zeolite.