Selenium-containing slow-release fertilizer additive and production process thereof

Abstract

The invention relates to the technical field of fertilizer additives, in particular to a selenium-containing slow-release fertilizer additive and a production process thereof. The additive consists of the following raw materials in part by weight: 5 to 10 parts of dicyanodiamine, 20 to 40 parts of hydroquinone, 20 to 30 parts of lignin, 1 to 3 parts of sodium selenite and 17 to 54 parts of auxiliary material. The additive has selenium-containing and slow-release functions, the slow-release function of the additive can effectively improve the utilization rate of the fertilizer by 20 to 30 percent, and the fertilizer effect period is prolonged to 90 to 120 days. The selenium-containing function can increase the biological organic selenium content of crop seeds, vegetables and fruits by 5 to10 times, improve the amino acid content and improve the lysine content and the cystine content by 30 to 50 percent respectively and is an optimal path for safely and effectively supplementing the selenium for the human body. The production process is simple and feasible, can obtain disposable base fertilizer, and cancels a top application process. The production process has comprehensive benefits of increasing yield, increasing income, saving fertilizer and saving labor, and has significance for saving resources and reducing environmental pollution.

Description

technical field [0001] The invention relates to the technical field of fertilizer additives, in particular to a selenium-containing slow-release fertilizer additive and a production process thereof. Background technique [0002] With the increase of population and the reduction of arable land, as well as the improvement of people's living standards, agriculture is required to continuously improve the output and product quality. Fertilizer plays an important role in agricultural production. Among many factors to increase production, its contribution rate is 30%. my country is a big country in the production and use of chemical fertilizers, and its output and usage rank first in the world, but the product quality needs to be further improved. The main problem is that the utilization rate of fertilizer is low, the fertilizer effect period is short, and the function is single. The fertilizer effect period of nitrogen fertilizer in the base is only 30-50 days, while the general c...

AI Technical Summary

Problems solved by technology

[0005] The transformation process of phosphate fertilizer in the soil is different from that of nitrogen fertilizer. Nitrogen fertilizer mainly decomposes and transforms quickly, and the crops are too late to absorb and volatilize, resulting in leaching loss. Phosphorus fertilizer is easy to be fixed by soil colloids, making it difficult for crops to absorb and utilize, and the utilization rate is very low.