Composite fertilizer containing seaweed dregs and preparation method thereof

Abstract

The invention discloses composite fertilizer containing seaweed dregs. The fertilizer is prepared from, by weight, 36-42 parts of modified sludge, 28-32 parts of seaweed dreg extract, 16-22 parts of organic-inorganic mixed fertilizer, 14-18 parts of crushed crude pearlite, 8-12 parts of micron hydroxyapatite, 6-10 parts of polyethylene glycol, 3-5 parts of gelatin, 1-3 parts of melia azedarach, 1-3 parts of coptidis rhizoma powder and 1-2 parts of fulvic acid potassium salt. According to the composite fertilizer containing the seaweed dregs, the utilization rate of the seaweed dregs is increased, the modified sludge is matched with the seaweed dregs to achieve synergic efficacy, and the composite fertilizer has a high use value and a great application prospect.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a compound fertilizer containing seaweed residue and a preparation method thereof. Background technique [0002] The seaweed comprehensive processing industry uses kelp and giant algae as raw materials to produce pure natural, green, and environmentally friendly high-tech products such as marine chemicals, marine drugs, marine food and health care products. A large number of seaweeds rich in organic matter and nutrient salts are produced in the industrial production process The discharge of slag has become a potential factor for water eutrophication and red tide, which brings damage and impact to marine fishery economy and ecology. It not only wastes a lot of natural resources, but also brings a series of environmental pollution problems. Seaweed slag is used as Seaweed dregs, an industrial waste product after the utilization of marine resources, are dried to an appropriate water conte...

AI Technical Summary

Problems solved by technology

[0002] The seaweed comprehensive processing industry uses kelp and giant algae as raw materials to produce pure natural, green, and environmentally friendly high-tech products such as marine chemicals, marine drugs, marine food and health care products. A large number of seaweeds rich in organic matter and nutrient salts are produced in the industrial production process The discharge of slag has become a potential factor for water eutrophication and red tide, which brings damage and impact to marine fishery economy and ecology. It not only wastes a lot of natural resources, but also brings a series of environmental pollution problems. Seaweed slag is used as Seaweed dregs, an industrial waste product after the utilization of marine resources, are dried to an appropriate water content, fully decomposed and fermented. Seaweed residue has large water-holding porosity and small ventilation porosity, which is easy to absorb water and expand, and has a high water-air ratio

[0003] Chinese patent document "(Application No.: 201410426728.0)" discloses a high-activity seaweed fertilizer for peanuts and its preparation method, which belongs to the technical field of fertilizer production for crops. It is made from the following raw materials: urea, monoammonium phosphate, calcium magnesium phosphate fertilizer , Potassium sulfate, borax, EDTA chelated iron, EDTA chelated manganese, EDTA chelated zinc, ammonium heptamolybdate, seaweed extract, seaweed slag, although the ratio of seaweed slag is reasonable, the effect still needs to be improved. Chinese Patent Document "(Application No.: 200810238420.8)" discloses a preparation method of seaweed organic fertilizer, which uses the waste residue after extracting seaweed gel to ferment to produce organic fertilizer. ‰ of potassium dihydrogen phosphate, although this method effectively improves the utilization rate of seaweed, but the fertilizer efficiency of organic fertilizer is not very good, and still needs to be further improved