A polymeric carbon microsphere fertilizer slow-release synergist and preparation method thereof

Abstract

The invention belongs to the field of fertilizers for crops, and particularly relates to a polymeric carbon micro-sphere fertilizer sustained-release synergist and a method for preparing the same. The polymeric carbon micro-sphere fertilizer sustained-release synergist comprises polymeric micro-spheres with porous structures and is made of raw materials including, by weight, 70-80 parts of forestry waste, 10-20 parts of modifiers, 0.5-1 part of activators, 0.5-1 part of pore-forming agents, 1-5 parts of surfactants and 1-5 parts of functional auxiliaries. The polymeric carbon micro-sphere fertilizer sustained-release synergist and the method have the advantages that porous carbon micro-spheres are prepared from the forestry waste with modified surfaces by the aid of a hydro-thermal process, the porous carbon micro-spheres and the water-soluble polymeric modifiers are polymerized under microwave vibration effects, accordingly, the stable polymerization carbon micro-spheres with the porous structures can be formed, the polymeric carbon micro-sphere fertilizer sustained-release synergist is high in adsorption and chelating capacity, fertilizer nutrients in soil can be adsorbed and fixed into micro-pores of the polymerization carbon micro-spheres, loss of the fertilizer nutrients can be reduced, the water and fertilizer retaining capacity of the soil can be improved, and environmental pollution can be relieved; the polymeric carbon micro-sphere fertilizer sustained-release synergist is environmental friendly and pollution-free, the fertilizer utilization rate can be increased, soil environments can be improved, and the like.

Description

technical field [0001] The invention belongs to the field of crop fertilizers, in particular to a polymerized carbon microsphere fertilizer slow-release synergist and a preparation method thereof. Background technique [0002] my country is a country with a large agricultural development. The small area of ​​arable land and low grain output are the biggest problems facing my country's agricultural development. At present, the important means to increase grain output is the application of chemical fertilizers. my country is the largest producer and user of chemical fertilizers in the world. The annual amount of chemical fertilizer application accounts for 35% of the world's total, but the utilization rate of chemical fertilizers is less than 30%, which is far lower than that of developed countries. Due to the low utilization rate of chemical fertilizers, in order to pursue high crop yields, farmers use a large amount of chemical fertilizers, which not only increases the econo...

AI Technical Summary

Problems solved by technology

However, because urine enzyme inhibitors and nitrification inhibitors are very easy to pollute water bodies, they are not suitable for long-term application, and the fertilizer effect extension period is short, and the synergistic effect on phosphorus and potassium fertilizers is not significant, so it is difficult to improve the comprehensive utilization rate of compound fertilizers.