Slow-release water-retaining high-nitrogen fertilizer and preparation method thereof

Abstract

The invention relates to fertilizers, and in particular relates to a high-nitrogen fertilizer and a preparation method of a high-nitrogen fertilizer. The high-nitrogen fertilizer is capable of reducing secondary pollution and shortening a maturation period of soil. The high-nitrogen fertilizer is prepared from the following raw materials in percentage by weight: 28.3-30 percent of urea, 56-60 percent of ammonium sulfate, 7.7-10 percent of magnesium sulfate, 3 percent of water-retaining agent, 0.5 percent of enzyme inhibitor, and 0.5 percent of nitrification inhibitor. A long-acting slow-release technology of nitrogen fertilizers is introduced, the maturation period of the soil is shortened, the secondary pollution during the application of the chemical fertilizer is reduced, and thus the high-nitrogen fertilizer has important significance in soil repairing, and the productive capacity of the soil is improved.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a high-nitrogen fertilizer capable of reducing the secondary pollution of the fertilizer and shortening the maturation period of the soil and a preparation method thereof. Background technique [0002] Nitrogen fertilizer is a necessity for the growth of crops, and it is widely used at present. my country is a big producer of chemical fertilizers, and in 2003 it has reached 43.75 million tons. Every year, farmers need to spend hundreds of billions of funds to purchase chemical fertilizers, which shows how widely chemical fertilizers are used in agricultural production. However, the long-term and large-scale use of chemical fertilizers and improper use have serious negative impacts. At present, the utilization rate of chemical fertilizers is very low, only about 35%-50%, the loss is very large, and the fertilizer efficiency is correspondingly reduced. The long-term use of large amounts of chemical ...

AI Technical Summary

Problems solved by technology

Every year, farmers need to spend hundreds of billions of money to buy chemical fertilizers, which shows how widely chemical fertilizers are used in agricultural production. However, the long-term use of large amounts of chemical fertilizers and improper use will have very serious negative impacts.

At present, the utilization rate of chemical fertilizers is very low, only about 35%-50%, the loss is very large, and the fertilizer efficiency is correspondingly reduced. The long-term use of large amounts of chemical fertilizers is not effective, and the most important thing is to deteriorate the ecological environment. The quality of agricultural products has declined, resulting in secondary pollution of the soil, which greatly reduces productivity. Therefore, reasonable and scientific proportioning and scientific selection of fertilizers are of great significance for reducing secondary pollution and increasing productivity.