SLOW-RELEASE STICK FERTILIZER AND A METHOD FOR PRODUCING THE SAME

摘要

PURPOSE: A stick type slow-release fertilizer is provided to include a core layer, a middle layer, and a shell layer, thereby providing plants with various nutrients for growth. CONSTITUTION: A stick type slow-release fertilizer(100) comprises a core layer(10), a middle layer(20), and a shell layer(30). The core layer is manufactured by mixing an inorganic fertilizer and starch and compress-molding the same. The middle layer is formed by mixing natural material or a microorganism, and starch and compress-molding the same. The shell layer is formed by mixing inorganic fertilizer and starch and compress-molding the same. The core layer includes 1-100 parts by weight of inorganic fertilizer based on 100.0 parts by weight of starch. The middle layer comprises 100-1500 parts by weight of a natural material, a microorganism, or a mixture thereof, based on 100.0 parts by weight of the starch. The shell layer comprises 100-2500 parts by weight of an inorganic fertilizer based on 100.0 parts by weight of starch. The stick type slow-release fertilizer comprises 10-50 weight% of the shell layer, 10-90 weight% of the middle layer, and 10-50 weight% of the core layer.