Potassium and tobacco-specific sustained release preparation

The present invention discloses a specific method of preparing sustained release potassium and tobacco, which is based on a conventional slow-release fertilizer is potassium center, the film material and inorganic material is coated with the organic complex material wrapped into microcapsule, particulate product after drying shape, particle size 3-5 mm; coating material which accounted for 30% -50% by weight of the total weight of the fertilizer; inorganic film material constitutes 80% -90% by weight of the coating material, the organic material (including an organic film material, the adhesive agent and a blocking agent) 10% -20% by weight of the coated material; first inorganic film and the organic film material, high speed mixing materials, followed by traditional potash, is added to the rotating mixture granulated in a granulator, envelope, timely sprayed during the corresponding binding solution is made, the final spray blocking agent. This tobacco-specific sustained release potash at low application rates, and increase the content of upper leaves of tobacco Tobacco potassium middle 30%; while the potassium relative to other release greatly simplifies the fabrication process, reduces the production cost.