Environment-friendly coated slow release fertilizercontaining biological bacteria and preparation method thereof

Abstract

The invention discloses an environment-friendly coated slow release fertilizer containing biological bacteria and a preparation method thereof. The fertilizer is prepared from, by weight, 1-2 parts of yellow humic acid potassium, 10-20 parts of acrylic acid, 30-50 parts of sodium alginate solution, 0.5-1 part of biological fertilizer powder, 1-2 parts of ammonium peroxydisulfate, 3-6 parts of N,N'-methylenebis, 3-5 parts of active straw ash, 15-25 parts of poval, 4-7 parts of starch, 25-35 parts of urea, 8-15 parts of potassium hydrogen phosphate , 40-50 parts of calcium chloride solution and 50-100 parts of distilled water. The preparation method comprises the steps of adding a water retention agent into crosslinked fluid, and spraying the solution on a fertilizer inner core. The shortcoming that the water retention agent is prone to falling when directly adhering to the fertilizer inner core is overcome. The water retention effect of the fertilizer is obvious. At the same time, the crosslinked fluid can exert the function of increasing the water resistance of the fertilizer, at the same time, the environment-friendly coated slow release fertilizer is biologically degradable and environment-friendly, the introduction of biological bacteria can degenerate pesticide and fertilizer damage, and degrade heavy metal.

Description

technical field [0001] The invention relates to a slow-release fertilizer, in particular to a preparation method of an environment-friendly film-coated slow-release fertilizer containing biological bacteria. [0002] technical background [0003] Coated slow / controlled release fertilizer is based on granular chemical fertilizer, and the surface is coated with a layer of slightly water-soluble inorganic or organic polymer, which can change the release characteristics of fertilizer nutrients, prolong or control the release of fertilizer nutrients, A new type of fertilizer that coordinates the release of nutrients with the fertilizer requirements of crops. The development of this kind of fertilizer has put forward new ideas for improving fertilizer utilization rate, reducing environmental pollution, and developing labor-saving and labor-saving modern agriculture. Therefore, researchers in fertilizer science, soil science, environmental science, chemistry and other disciplines h...

AI Technical Summary

Problems solved by technology

[0004] Ni Boli prepared a water-retaining slow-release fertilizer by using sodium alginate and polyacrylic acid in his postgraduate dissertation "Preparation and Performance Research of Environmentally Friendly Multifunctional Slow- and Controlled-Release Fertilizer", but there are still water-retaining agents that are easy to fall off, including The water resistance of the membrane needs to be improved, and the slow release performance is not good.