Phosphorus-potassium compound fertilizer for soil fertility improvement and preparation method thereof

Abstract

The invention discloses a phosphorus-potassium compound fertilizer for soil fertility improvement. The phosphorus-potassium compound fertilizer is prepared from the following raw materials in parts byweight: 150-200 parts of monopotassium phosphate, 8-12 parts of urea, 1-2 parts of copper sulfate, 1-2 parts of zinc sulfate, 10-20 parts of monoammonium phosphate, 8-10 parts of calcium superphosphate, 2-4 parts of polyvinyl alcohol, 5-10 parts of cassava starch, 7-9 parts of diatomite, 6-8 parts of borax and 20-30 parts of bentonite. The main component of the product is potassium dihydrogen phosphate and chlorine elements are not contained, wherein the monopotassium phosphate is extremely low in salinity value; the fertilizer is an ideal foliar application fertilizer, is low in applicationamount, can be widely applied to seed soaking, root soaking medicine seed dressing, irrigation and foliar spraying, and has remarkable effects on the aspects of accelerating grain-filling of crops, promoting metabolism, resisting dry and hot wind, resisting drought, resisting cold, preventing lodging and the like.

Description

Technical field [0001] The invention relates to a phosphorus-potassium compound fertilizer, in particular to a phosphorus-potassium compound fertilizer for soil fertilization and a preparation method thereof. Background technique [0002] When planting crops on the soil, in order to increase the yield of the crops, different fertilizers are often applied to different crops. Phosphorus potassium compound fertilizer is one of the fertilizers that are used frequently. Most of the phosphorus-potassium compound fertilizers on the market require mixed use, and they contain a large amount of chlorine, which will affect crop growth. In order to make crops grow smoothly, it is necessary to design a phosphorus-potassium compound fertilizer for soil fertilizer to meet the demand. Summary of the invention [0003] The purpose of the present invention is to provide a phosphorus-potassium compound fertilizer for soil fertilization and a preparation method thereof, so as to solve the problems r...

AI Technical Summary

Problems solved by technology

Most of the phosphorus and potassium compound fertilizers on the market need to be mixed, and they all contain a lot of chlorine, which will affect the growth of crops