Sterilization soil-improvement slow-release composite fertilizer and preparation method thereof

Abstract

The invention discloses sterilization soil-improvement slow-release composite fertilizer. The sterilization soil-improvement slow-release composite fertilizer comprises, by weight, 20-25 parts of urea, 10-15 parts of ammonium biphosphate, 10-20 parts of potassium phosphate, 5-10 parts of potassium sulfate, 8-12 parts of sodium silicate, 4-6 parts of magnesium phosphate, 7-9 parts of calcium chloride, 0.2-0.4 parts of zinc ammonium phosphate, 0.1-0.3 parts of copper carbonate, 0.1-0.2 parts of manganese ammonium phosphate, 0.4-0.6 parts of potassium borate, 0.3-0.5 parts of ferric sulfate, 0.2-0.4 parts of sodium molybdate, 20-25 parts of sodium alginate, 35-45 parts of a coating material, 5-10 parts of cassava slag, 5-8 parts of furfural slag, 10-20 parts of chicken manure, 5-10 parts of carbonized rice husk, 10-15 parts of humic acid, 10-15 parts of straws, 5-8 parts of plant ash, 0.2-0.5 parts of biological fungi, 4-6 parts of thermopsine and 3-5 parts of Artemisia argyi powder. The invention also discloses a preparation method of the sterilization soil-improvement slow-release composite fertilizer.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a slow-release compound fertilizer for sterilizing and improving soil and a preparation method thereof. Background technique [0002] China is a large agricultural country, and it is also the largest producer and consumer of chemical fertilizers in the world today. Chemical fertilizers play a pivotal role in increasing food production. The main problem in the current use of chemical fertilizers is that most of the fertilizers used are ordinary quick-acting chemical fertilizers. In addition to unreasonable fertilization measures, the utilization rate of fertilizers has been reduced, resulting in waste of resources, environmental pollution, and decline in the quality of agricultural products. [0003] Compared with traditional fertilizers, slow-release fertilizers have many advantages, such as reducing nutrient loss and greatly improving fertilizer utilization efficiency, etc....

AI Technical Summary

Problems solved by technology

However, at present, the proportion of coated fertilizers in slow-release fertilizers is the largest, and the coating materials are mostly organic synthetic polymers that are difficult to degrade, which will cause secondary pollution, and the coating materials only play the role of slowly releasing nutrients, and the effect is single. Therefore, it is necessary to provide a multifunctional and degradable slow-release fertilizer