Fertilizer synergistic additive and preparation thereof

Abstract

The invention relates to technology of synergy for fertilizers, and more specifically relates to a fertilizer synergistic additive and a preparation thereof. The solid dosage form synergistic additive comprises the following raw materials in percentage by weight: 55-93.5% of fermentation broth of polyglutamic acid, 0.5-3% of thiourea, 0.5-9% of N-(n-butyl)thiophosphoric triamide, 5-30% of dicyandiamide, and 48-91% of diatomite. Or the liquid dosage form synergistic additive comprises the following raw materials in percentage by weight: 55-93.5% of fermentation broth of polyglutamic acid, 0.5-3% of thiourea, 0.5-9% of N-(n-butyl)thiophosphoric triamide, 5-30% of dicyandiamide, and 0.5-3% of an emulsifier. The fermentation broth contains 3-10% of polyglutamic acid, and the emulsifier is polyoxyethylene sorbitan fatty acid ester. The fertilizer synergistic additive can increase effective concentration of fertilizer nutrients, prolong effective period of the fertilizer, promote crops to absorb and transport nutrients, overcome the problem of insufficient release of the long-acting slow-release fertilizer nutrients at early stage, guarantee efficiency of fertilizer at later period, the validity period of fertilizer nutrients is longer than 120 days, so that long-acting and high-efficiency utilization of fertilizer nutrients are realized.

Description

Technical field [0001] The invention relates to fertilizer synergistic technology, more specifically a fertilizer synergistic additive and its preparation. Background technique [0002] At present, my country has the problem of a large amount of chemical fertilizers and low nutrient utilization. According to statistics, the utilization rate of nitrogen fertilizer is about 30-35%, the utilization rate of phosphate fertilizer is 10-25%, and the utilization rate of potassium fertilizer is much lower than 40-50%. The level of developed countries in the world, as well as the environmental pollution and resource waste caused by excessive fertilization, so research on new fertilizer efficiency technology, improve fertilizer utilization, and save fertilizer input is of great significance to my country's agricultural development and ecological environmental protection. [0003] At present, the research on fertilizer efficiency technology in China mainly includes slow and controlled release f...

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Problems solved by technology

[0002] At present, there is a problem of large amount of chemical fertilizer application and low nutrient utilization rate in my country. According to statistics, the utilization rate of nitrogen fertilizer is about 30-35%, the seasonal utilization rate of phosphate fertilizer is 10-25%, and the seasonal utilization rate of potassium fertilizer is 40-50%, which is far lower than The level of developed countries in the world, and the problems of environmental pollution and resource waste caused by excessive fertilization, so research on new fertilizer efficiency technology, improve fertilizer utilization rate, save fertilizer input is of great significance to my country's agricultural development and ecological environment protection

[0003] At present, the research on fertilizer synergistic technology in my country mainly includes slow and controlled release fertilizer technology represented by stable fertilizer synergistic technology, coated fertilizer technology, and urea-formaldehyde slow-release fertilizer technology, and the enhancement of complexation of organic polymers and nutrient ions. Efficiency technology (commonly used organic macromolecular substances: polyaspartic acid, polyglutamic acid), the first three fertilizer synergistic technologies play a greater role in the long-term effect of fertilizers, and can realize the production of crops with one-time fertilization without topdressing, but fertilizers The synergistic performance is not outstanding in a short period of time, especially in the initial stage of crop growth; and the use of organic polymers and nutrient ions complexation synergistic technology can effectively promote the absorption and utilization of nutrients by crops in the early stage of crop growth, but in prolonging the release of fertilizer nutrients The long-term effect is limited, and it cannot meet the one-time fertilization demand of some crops

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