Special slow-release and controlled-release crop nanometer fertilizer and preparation process thereof

Abstract

The present invention relates to a special slow-release and controlled-release crop nanometer fertilizer and a preparation process thereof. According to the present invention, the micro-emulsification and high shear technology and the particle guide speed change technology in chemical physics are used to product the special blended cemented coated slow-release crop nanometer fertilizer, such that the release speed of the fertilizer nutrients substantially meets the requirement of crops on the fertilizer at the growth stage; the particle forming is that a layer of the nanometer outer coating is wrapped on the outer surface of the fertilizer, and after using the obtained fertilizer, the fertilizer efficiency at the early stage is rapid, the fertilizer efficiency at the middle stage is stable, and the fertilizer efficiency at the late stage is long; different fertilizers capable of releasing nutrients according to the set releasing rate and the set releasing time can be developed according to the requirements of crops at different growth periods; the main raw materials of the nanometer fertilizer comprise ammonium chloride, urea, ammonium dihydrogen phosphate, potassium chloride, potassium sulfate, a filler, a conditioner and a coating agent; and the obtained fertilizer belongs to the environment-friendly fertilizer, and has characteristics of no toxicity and harm on crops, substantial reduction of pollution of the fertilizer on soil and groundwater, reduction of the nitrate content in vegetables by 80-90%, and improvement of the sugar content and the vitamin content in vegetables and fruits.

Description

technical field [0001] The invention belongs to the field of agricultural chemical fertilizers, and in particular relates to a special nano-fertilizer for slow-release and slow-control crops. Background technique [0002] Chemical fertilizers are developing towards high concentration, compounding and slow / controlled release, but the production of chemical fertilizers in my country is still dominated by low concentration and single nutrient elements. At present, most nitrogen fertilizers in my country are mainly amide nitrogen, ammonium nitrogen and a small part of nitrate nitrogen, of which amide nitrogen and ammonium nitrogen account for 80% of the total nitrogen in agricultural fertilizers, and their seasonal utilization rate is only 35%. -40%, 15-20% lower than developed countries. The same is true for phosphorus and potassium fertilizers. The utilization rate of fertilization in the current season is only 60-70%, and the remaining fertilizers cannot be fully utilized and...

AI Technical Summary

Problems solved by technology

At present, the coated slow-release and controlled-release fertilizers developed at home and abroad can only make the crops absorb nutrients better, but they are expensive. Therefore, people continue to study new solutions for bio-organic fertilizers and seek new products that improve crop yield and quality.