Anti-caking water-retaining compound fertilizer and preparation method thereof

Abstract

The invention discloses an anti-caking water-retaining compound fertilizer and a preparation method thereof. The anti-caking water-retaining compound fertilizer comprises, by weight parts, 20-22 parts of urea, 10-12 parts of expanded perlite, 3-5 parts of EM fungicide, 20-25 parts of weathered coal, 13-15 parts of sodium humic acid, 12-14 parts of monopotassium phosphate, 10-11 parts of chitosan, 2-3 parts of polyacrylamide, 2-3 parts of ferric ammonium citrate, 5-8 parts of magnesium sulfate, 4-6 parts of activated carbon, 6-8 parts of Chinese herb residues, 8-10 parts of plant ash, 6-8 parts of pine needle mulch, 6-9 parts of polylactic acid, 8-12 parts of polyvinyl alcohol, 0.5-1 part of N,N-methylene-bisacrylamide and an appropriate amount of water. According to the anti-caking water-retaining compound fertilizer, the functional components including the plant ash, the pine needle mulch, the weathered coal and the activated carbon are added, fertilizer particle pores are added, and the particle stability is improved, so that the anti-caking effect of the fertilizer is good; mutual adhesion and caking between fertilizer particles can be avoided during use, and thus the fertilizer efficiency is guaranteed.

Description

technical field [0001] The invention relates to the technical field of slow-release fertilizers, in particular to an anti-caking and water-retaining compound fertilizer and a preparation method thereof. Background technique [0002] At present, there are generally three kinds of agricultural fertilizers in the Chinese market: one is chemical raw material fertilizer, one is organic fertilizer, and the other is chemical raw material and organic fertilizer mixed fertilizer; the disadvantage of chemical raw material: long-term use will cause land soil compaction, Affect the growth of crops, resulting in a gradual reduction in production; the disadvantages of organic fertilizers are: the nutrients required by plants are insufficient to meet the needs of crop production; they affect crop yields; the disadvantages of mixed fertilizers: the organic matter and total nutrients in the fertilizer formula are contradictory, so High and low, if the organic matter content is too high, it i...

AI Technical Summary

Problems solved by technology

[0003] Mulch film has the functions of heat preservation, water retention, and frost protection for crops. The application of mulch film technology has greatly improved and increased the yield and benefit of crops. However, traditional mulch film is a synthetic polymer compound that is almost non-degradable in the natural state. If it is not treated after use, it will cause great pollution to the soil environment and affect the growth of crop roots. However, the treated plastic film cannot be recycled due to moisture and damage. It can only be recycled as garbage, which is labor-consuming and time-consuming.