Char-based slow-release compound fertilizer special for cotton and preparation system and method of compound fertilizer

Abstract

The invention discloses a char-based slow-release compound fertilizer special for cotton. Raw materials of the fertilizer include urea, a calcium magnesium phosphate fertilizer, a magnesium-potassium sulfate fertilizer, biochar powder, lignin zinc carbonate, disodium octoborate tetrahydrate, manganese chloride, ammonium ferrous sulfate, europium chloride, neodymium chloride and N-phosphorotriamide. The invention further provides a preparation system and method of the compound fertilizer. The preparation method is simple and efficient, and the raw materials are fully mixed and are good in quality. The obtained compound fertilizer is abundant in nutrients, lasting and coordinated in nutrient element release, and high in nutrient utilization efficiency. The fertilizer can improve physical and chemical properties of soil, improve soil fertility, and promote soil microorganism diversity.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special carbon-based slow-release compound fertilizer for cotton and its preparation system and method. Background technique [0002] Cotton is an important economic crop in the world. As an important raw material for the textile industry, it has a significant impact on the national economy of our country. The lifetime growth period of cotton is long, and the cultivation and management process is cumbersome. It is sensitive to nutrients, requires a large amount of fertilizer, and needs more fertilizers. Therefore, people generally obtain high yields by increasing the input of fertilizers, especially nitrogen fertilizers in large quantities. However, due to the characteristics of conventional fertilizers and the influence of unscientific and unreasonable methods and methods in the use process, not only the nutrient utilization rate of fertilizers is seriously reduced, but ...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of conventional fertilizers and the influence of unscientific and unreasonable methods and methods in the use process, not only the nutrient utilization rate of fertilizers is seriously reduced, a large amount of resources are wasted, and the effect of increasing production is getting smaller and smaller.

At the same time, it also caused soil environmental deterioration such as soil acidification, salinization, compaction, microbial diversity decline, and soil water and fertilizer retention capacity.

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