Composite potash fertilizer

Abstract

The invention relates to the technical field of agricultural fertilizers, in particular to a composite potash fertilizer which is prepared from the following raw materials in percentage by weight: 10to 20 percent of livestock and poultry manure, 10 to 20 percent of furfural residue, 6 to 8 percent of nitrogenous fertilizer, 10 to 30 percent of potash fertilizer, 5 to 15 percent of turf, 10 to 15percent of rice hull powder, 0.3 to 1 percent of soil activator, 0.1 to 3 percent of complexing agent and 0.1 to 0.3 percent of bioactive strain. The potash fertilizer disclosed by the invention is simple in raw material proportioning, and the activity of bacteria in the fertilizer is improved by adding bioactive bacteria and utilizing microbial activity so that the absorption and utilization rateof soil on the fertilizer is improved, soil components can be effectively changed, and the soil structure is improved.

Description

technical field [0001] The invention relates to the technical field of agricultural chemical fertilizers, in particular to a compound potassium fertilizer. Background technique [0002] There are two existing methods of applying chemical fertilizers. One is the multiple fertilization commonly used by farmers. Each time a chemical fertilizer is applied scattered, and nitrogen fertilizer is reapplied. Some are excessive and some are deficient. Various nutrients needed, resulting in abnormal growth. The other is the compound granular fertilizer produced by the factory, which contains three kinds of fertilizers: nitrogen, phosphorus and potassium. The application of this compound fertilizer is more reasonable than the above-mentioned fertilization method, but this kind of compound fertilizer is granulated by discs, wet granules The strength is low, and it needs to be dried to increase the strength. It is packaged for delivery, and the ammonium bicarbonate that needs to be dried ...

AI Technical Summary

Problems solved by technology

[0002] There are two existing methods of applying chemical fertilizers. One is the multiple fertilization commonly used by farmers. Each time a chemical fertilizer is applied scattered, and nitrogen fertilizer is reapplied. Some are excessive and some are deficient. Various nutrients needed, resulting in abnormal growth

The other is the compound granular fertilizer produced by the factory, which contains three kinds of fertilizers: nitrogen, phosphorus and potassium. The application of this compound fertilizer is more reasonable than the above-mentioned fertilization method, but this kind of compound fertilizer is granulated by discs, wet granules The strength is low, and it needs to be dried to increase the strength. It is packaged for delivery, and the ammonium bicarbonate that needs to be dried is unfavorable to the self-decomposing and volatilizing ammonium bicarbonate above 35°C. Therefore, ammonium bicarbonate cannot be used as a nitrogen source for compound fertilizers with a drying process. At home and abroad, urea is forced to use urea as a nitrogen source for making compound fertilizers. In my country, the output of urea is small and the price is high, which limits the development of compound fertilizers and is far from meeting the needs of agriculture. As a result, most farmers still use backward fertilization methods

Second, due to the certain viscosity of superphosphate, it is easy to stick to the kiln wall of the rotary kiln during drying, and it should be cleaned regularly. The skin of the cleaning workers is often stimulated by phosphate fertilizers and produces allergic reactions.

The third is to use disc granulation and drying method to produce compound fertilizer, which has complicated process, many equipments, large investment and high processing cost, which is not suitable for township enterprises.