CN112794767A

CN112794767A - Compound seaweed fertilizer and preparation method thereof

Info

Publication number: CN112794767A
Application number: CN202110211853.XA
Authority: CN
Inventors: 方钦景; 付志勇; 胡尚喜; 胡瑞
Original assignee: Hunan Kaimenzi Fertilizer Co ltd
Current assignee: Hunan Kaimenzi Fertilizer Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-05-14

Abstract

The invention discloses a compound seaweed fertilizer and a preparation method thereof, comprising raw materials and auxiliary materials; the raw material components and the weight portion ratio are as follows: 7-9 parts of seaweed, 5-7 parts of algae residue, 6-8 parts of microalgae residue, 4-6 parts of Ascophyllum nodosum, 1-3 parts of kelp, 4-6 parts of kelp, 3-5 parts of gulfweed, 2-4 parts of Chelidonium majus, 2-4 parts of dunaliella, 2-4 parts of Arthropoda, 3-5 parts of Fucus vesiculosus, 1-3 parts of Enteromorpha prolifera, 1-3 parts of Ulva lactuca, 3-5 parts of Kappaphycus, 3-5 parts of brown algae, 2-4 parts of citrus peel residue, 1-3 parts of zeolite, 4-6 parts of shell and 4-6 parts of urea. Compared with organic fertilizers, the main raw material of the seaweed fertilizer is algae, so that the cost can be effectively reduced, the environment optimization effect is realized, the traditional evaporation concentration process is changed, the energy consumption is saved, various nutritional ingredients in the algae are fully utilized through the processes of drying, cooling, reacting, fermenting and the like, and the seaweed compound fertilizer and the preparation method thereof have the advantages of convenience in reducing the cost, increasing the application range of the seaweed fertilizer, effectively protecting the environment and the like.

Description

Compound seaweed fertilizer and preparation method thereof

Technical Field

The invention relates to the field of fertilizers, in particular to a compound seaweed fertilizer and a preparation method thereof.

Background

The seaweed fertilizer is a fertilizer produced by using marine brown algae or being matched with a certain amount of nitrogen, phosphorus, potassium and medium trace elements, has various forms, is mainly prepared from liquid and powder in the market, and has a particle state at least in part, is a biological fertilizer prepared by scientifically processing marine plant seaweed serving as a main raw material, mainly comprises natural bioactive substances which are extracted from the seaweed and are beneficial to plant growth and development and mineral nutrient elements which are absorbed and enriched in the body of the seaweed from the sea, and comprises seaweed polysaccharide, phenol polymeric compounds, mannitol, betaine and plant growth regulating substances (cytokinin, gibberellin, auxin), Abscisic acid, etc.) and nitrogen, phosphorus, potassium, and microelements such as iron, boron, molybdenum, iodine, etc., in addition, in order to increase the fertilizer efficiency and the chelation of the fertilizer, a proper amount of humic acid and a proper amount of microelements are also dissolved.

The physical extraction process mainly utilizes a high-pressure low-temperature cooling process to achieve the aim of seaweed cell wall breaking, and although the method has no pollution, the method has strict requirements on instruments and equipment and higher cost, and is difficult to realize large-scale production.

The biological extraction process is characterized in that various enzymes generated in the microbial fermentation process are utilized to degrade seaweed macromolecular substances into micromolecular substances which are easy to absorb and utilize by plants, the method is mild in reaction, safe, environment-friendly and pollution-free in products, and the bioactive components and nutrient substances in the seaweed are retained to the maximum extent, so that the method is an ideal seaweed fertilizer production method.

With the social development, organic fertilizers are produced by chemical processes and have great harm to the environment, but fertilizers are not used, so that elements contained in soil are reduced, the growth of plants is not facilitated, the organic fertilizers are used to enable the soil to cause eutrophication to a certain degree, the production efficiency of the plants is reduced, and the soil can be damaged and become poor, at present, most of the seaweed fertilizers on the market are produced by taking brown algae as a single raw material, although the brown algae internally contains alginic acid which is proved to be a natural soil conditioning substance in recent years, the formation of granular soil structure can be promoted, the internal pore space of the soil is improved, the fertilizer, water and gas retention capacity of the soil is increased, the colloid balance of the soil is rapidly recovered, the biological activity of the soil is increased, but the total amount of the brown algae is low, the production is not facilitated, even if the produced seaweed fertilizers have relatively high cost, the method is not beneficial to selling, so that the use efficiency is reduced, and then the domestic seaweed fertilizer production process mainly adopts methods of physical crushing, chemical extraction and the like, so that more effective active ingredients in the seaweed are damaged, and the effect of later-stage processing and fertilizer manufacturing is seriously influenced.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a compound seaweed fertilizer and a preparation method thereof, and the compound seaweed fertilizer has the advantages of being convenient to reduce cost, increasing the application range of the seaweed fertilizer, effectively protecting the environment and the like.

In order to achieve the purpose, the invention provides the following technical scheme: a compound seaweed fertilizer comprises raw materials and auxiliary materials; the raw material components and the weight portion ratio are as follows: 7-9 parts of seaweed, 5-7 parts of algae residue, 6-8 parts of microalgae residue, 4-6 parts of Ascophyllum nodosum, 1-3 parts of kelp, 4-6 parts of kelp, 3-5 parts of gulfweed, 2-4 parts of Chelidonium majus, 2-4 parts of dunaliella, 2-4 parts of Arthropoda, 3-5 parts of Fucus vesiculosus, 1-3 parts of Enteromorpha prolifera, 1-3 parts of Ulva lactuca, 3-5 parts of Kappaphycus, 3-5 parts of brown algae, 2-4 parts of citrus peel residue, 1-3 parts of zeolite, 4-6 parts of shell and 4-6 parts of urea; the auxiliary materials comprise the following components in parts by weight: 0.1-0.3 part of cellulase, 0.1-0.4 part of pectinase, 0.2-0.4 part of protease, 0.1-0.3 part of glucoamylase, 0.2-0.4 part of glucanase, 0.1-0.4 part of 4-beta-mannuronic acid lyase, 0.02-0.04 part of acetic acid-sodium acetate, 0.04-0.06 part of ethanol, 0.05-0.07 part of aspergillus niger, 0.06-0.08 part of neurospora crassa, 0.03-0.05 part of bacillus subtilis, 0.01-0.03 part of phosphorus pentoxide, 0.01-0.03 part of potassium oxide, 0.01-0.03 part of calcium phosphate, 0.01-0.03 part of magnesium oxide, 0.7-0.9 part of organic reagent and the balance of water.

Preferably, the raw material components and the weight portion ratio are as follows: 9 parts of seaweed, 7 parts of algal residue, 8 parts of microalgal residue, 6 parts of Ascophyllum nodosum, 3 parts of kelp, 6 parts of kelp, 5 parts of gulfweed, 4 parts of Chelidonium majus, 4 parts of sargassum, 4 parts of Arthropoda, 5 parts of Fucus vesiculosus, 3 parts of Enteromorpha prolifera, 3 parts of Ulva lactuca, 5 parts of Kappaphycus, 5 parts of brown algae, 4 parts of citrus peel residue, 3 parts of zeolite, 6 parts of shell and 6 parts of urea; the auxiliary materials comprise the following components in parts by weight: 0.3 part of cellulase, 0.4 part of pectinase, 0.4 part of protease, 0.3 part of glucoamylase, 0.4 part of glucanase, 0.4 part of beta-mannuronic acid lyase, 0.04 part of acetic acid-sodium acetate, 0.06 part of ethanol, 0.07 part of aspergillus niger, 0.08 part of phleomycin griseus, 0.05 part of bacillus subtilis, 0.03 part of phosphorus pentoxide, 0.03 part of potassium oxide, 0.03 part of calcium phosphate, 0.03 part of magnesium oxide, 0.9 part of organic reagent and the balance of water.

Preferably, the raw material components and the weight portion ratio are as follows: 8 parts of seaweed, 6 parts of algal residue, 7 parts of microalgae residue, 5 parts of Ascophyllum nodosum, 2 parts of kelp, 5 parts of kelp, 4 parts of gulfweed, 3 parts of Chelidonium majus, 3 parts of sargassum, 3 parts of Arthropoda, 4 parts of Fucus vesiculosus, 2 parts of Enteromorpha prolifera, 2 parts of Ulva lactuca, 4 parts of Kappaphycus, 4 parts of brown algae, 3 parts of citrus peel residue, 2 parts of zeolite, 5 parts of shell and 5 parts of urea; the auxiliary materials comprise the following components in parts by weight: 0.2 part of cellulase, 0.3 part of pectinase, 0.3 part of protease, 0.2 part of glucoamylase, 0.3 part of glucanase, 0.2 part of 4-beta-mannuronic acid lyase, 0.03 part of acetic acid-sodium acetate, 0.05 part of ethanol, 0.06 part of aspergillus niger, 0.07 part of phleomycin griseus, 0.04 part of bacillus subtilis, 0.02 part of phosphorus pentoxide, 0.02 part of potassium oxide, 0.02 part of calcium phosphate, 0.02 part of magnesium oxide, 0.8 part of organic reagent and the balance of water.

Preferably, the raw material components and the weight portion ratio are as follows: 7 parts of seaweed, 5 parts of algal residue, 6 parts of microalgae residue, 4 parts of Ascophyllum nodosum, 1 part of kelp, 4 parts of kelp, 3 parts of gulfweed, 2 parts of Chelidonium majus, 2 parts of sargassum, 2 parts of Arthropoda, 3 parts of Fucus vesiculosus, 1 part of Enteromorpha prolifera, 1 part of Ulva lactuca, 3 parts of Kappaphycus, 3 parts of brown algae, 2 parts of citrus peel residue, 1 part of zeolite, 4 parts of shell and 4 parts of urea; the auxiliary materials comprise the following components in parts by weight: 0.1 part of cellulase, 0.1 part of pectinase, 0.2 part of protease, 0.1 part of glucoamylase, 0.2 part of glucanase, 0.1 part of 4-beta-mannuronic acid lyase, 0.02 part of acetic acid-sodium acetate, 0.04 part of ethanol, 0.05 part of aspergillus niger, 0.06 part of phleomycin ragosus, 0.03 part of bacillus subtilis, 0.01 part of phosphorus pentoxide, 0.01 part of potassium oxide, 0.01 part of calcium phosphate, 0.01 part of magnesium oxide, 0.7 part of organic reagent and the balance of water.

Preferably, the method comprises the following steps:

s1, collecting raw materials: firstly, a large amount of raw materials are purchased from fishermen, and sufficient auxiliary materials are purchased from merchants and stored for later use;

s2, washing: the method comprises the following steps of repeatedly cleaning 7-9 parts of seaweed, 5-7 parts of seaweed residues, 6-8 parts of microalgae residues, 4-6 parts of Ascophyllum nodosum, 1-3 parts of kelp, 4-6 parts of kelp, 3-5 parts of gulfweed, 2-4 parts of Chelidonium majus, 2-4 parts of dunaliella, 2-4 parts of Arthrospira, 3-5 parts of Fucus vesiculosus, 1-3 parts of Ulva lactuca, 3-5 parts of Kappaphycus, 3-5 parts of Enteromorpha, 2-4 parts of citrus peel residues and 4-6 parts of shells by using a large amount of clear water, removing impurities on the raw materials, and reducing the influence of the impurities on the fertilizer prepared in the later period;

s3, insolation cleaning: the cleaned raw materials are placed under the sun for insolation, elements such as sea salt and the like in the raw materials can be adsorbed on the surfaces of the raw materials in a crystallization form by the insolation of the sun, and then workers can clean the raw materials by using a cleaning brush to clean the crystals on the surfaces of the raw materials;

s4, cooling: after cleaning, workers put the raw materials into a dehydrator, dehydrate the raw materials by the dehydrator, and then freeze the dehydrated raw materials at-25 ℃ for 4 hours;

s5, crushing: taking out the raw materials at the temperature of-25 ℃, thawing at room temperature, putting the thawed raw materials into a pulverizer, and starting the pulverizer to pulverize the raw materials so as to bring convenience to the raw materials to form a powder state;

s6, stirring and mixing: the method comprises the following steps of pouring raw material powder in a pulverizer into a stirrer, adding a certain amount of water, starting the stirrer, and mixing multiple raw materials under the action of the stirrer, so that the production effect and the use efficiency of the fertilizer are improved;

s7, reaction in a reaction kettle: putting the mixed raw materials into a reaction kettle, and pouring 0.1-0.3 part of cellulase, 0.1-0.4 part of pectinase, 0.2-0.4 part of protease, 0.1-0.3 part of glucoamylase, 0.2-0.4 part of glucanase, 0.1-0.4 part of 4-beta-mannuronic acid lyase, 0.02-0.04 part of acetic acid-sodium acetate, 0.04-0.06 part of ethanol, 0.05-0.07 part of aspergillus niger, 0.06-0.08 part of neurospora crassa, 0.03-0.05 part of bacillus subtilis, 0.01-0.03 part of phosphorus pentoxide, 0.01-0.03 part of potassium oxide, 0.01-0.03 part of calcium phosphate, 0.01-0.03 part of magnesium oxide, 0.7-0.9 part of organic reagent and other auxiliary materials into the reaction kettle filled with the raw material powder, so that the raw materials can be decomposed under the action of the auxiliary materials;

s8, fermentation: pouring the decomposed raw materials and auxiliary materials into a fermentation tank from the inside of a reaction kettle, adding zeolite powder and shell powder into the fermentation tank, and stirring to ensure that the raw materials are fully contacted with the zeolite and the shells, so that the raw materials can be fermented;

s9, centrifugal filtration: taking the fermented raw materials out of the fermentation tank, placing the fermented raw materials into a differential centrifuge, separating residues in the raw materials from the raw materials under the action of the differential centrifuge, then placing the centrifuged raw materials into a filtering device, and separating the raw materials from filtrate in the filtering device to obtain filtrate and raw materials for later use;

s10, drying: the filtered raw materials are placed in a dryer, and under the action of the dryer, the raw materials can be dried, so that the drying degree of manufactured particles is kept;

s11, production: the dried raw materials are put into a granulator, then the filtrate is put into the granulator, and under the action of the granulator, the raw materials and the auxiliary materials can be changed into compound seaweed fertilizer particles, so that the compound seaweed fertilizer is convenient to store and use at a later stage.

The invention provides a compound seaweed fertilizer and a preparation method thereof, wherein algin in the fertilizer is a block linear polymer consisting of mannuronic acid and guluronic acid monomers, the algin has the characteristics of gel, chelation, hydrophilicity and the like, changes certain properties of soil through the characteristics, can be used as a soil regulator, can be used as a novel fertilizer after biochemical treatment, has the functions of increasing yield, lightening diseases, reducing drug residues, improving flavor and the like, furthest retains effective components such as nutrient elements, phytohormones and the like in seaweed produced seaweed fertilizer by using seaweed, can reduce the dependence on the seaweed when using various seaweed, thereby reducing the production cost, simultaneously, citrus peel added in the microbial extraction process is matched with aspergillus niger and rough vein fertilizier, and can produce pectinase, cellulose, xylenol enzyme and xylanase, thereby can continue to carry out the enzyme extraction simultaneously, the extraction rate is greatly improved, further supply the nutrition composition of fertilizer, and utilize the enzyme to accelerate to decompose the alga, make the alga, effective components such as nutrient element and phytohormone in the furthest's reservation alga, it is little to destroying effective active component in the alga, do not influence the effect of later stage fertilizer, enzymolysis alga colloidal solution under the acid condition, the effect of enzymolysis is better, the quality of enzymolysis is higher, can improve the utilization ratio of raw materials, reduce manufacturing cost, improve production quality, make the better inside nutrition of absorption fertilizer of plant, increase vegetation efficiency.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention is further explained below with reference to some examples, it being understood that the following examples are intended to illustrate, but not to limit the invention.

Example one

A preparation method of the compound seaweed fertilizer comprises the following steps:

s2, washing: 9 parts of seaweed, 7 parts of algal residues, 8 parts of microalgae residues, 6 parts of Ascophyllum nodosum, 3 parts of kelp, 6 parts of kelp, 5 parts of gulfweed, 4 parts of Chelidonium majus, 4 parts of sargassum, 4 parts of Arthropoda, 5 parts of Fucus vesiculosus, 3 parts of Enteromorpha prolifera, 3 parts of Ulva lactuca, 5 parts of Kappaphycus, 5 parts of brown algae, 4 parts of citrus peel residues and 6 parts of shells are repeatedly cleaned by using a large amount of clear water, so that impurities on the raw materials are removed, and the influence of the impurities on the fertilizer prepared in the later period is reduced;

s7, reaction in a reaction kettle: putting the mixed raw materials into a reaction kettle, and then pouring 0.3 part of cellulase, 0.4 part of pectinase, 0.4 part of protease, 0.3 part of glucoamylase, 0.4 part of glucanase, 0.4 part of beta-mannuronic acid lyase, 0.04 part of acetic acid-sodium acetate, 0.06 part of ethanol, 0.07 part of aspergillus niger, 0.08 part of neurospora crassa, 0.05 part of bacillus subtilis, 0.03 part of phosphorus pentoxide, 0.03 part of potassium oxide, 0.03 part of calcium phosphate, 0.03 part of magnesium oxide, 0.9 part of organic reagent and other auxiliary materials into the reaction kettle filled with raw material powder, so that the raw materials can be decomposed under the action of the auxiliary materials;

Example two

s2, washing: 8 parts of seaweed, 6 parts of algae residue, 7 parts of microalgae residue, 5 parts of Ascophyllum nodosum, 2 parts of kelp, 5 parts of kelp, 4 parts of gulfweed, 3 parts of Chelidonium majus, 3 parts of sargassum, 3 parts of Arthropoda, 4 parts of Fucus vesiculosus, 2 parts of Enteromorpha prolifera, 2 parts of Ulva lactuca, 4 parts of Kappaphycus alvarezii, 4 parts of brown algae, 3 parts of citrus peel residue and 5 parts of shell, a large amount of clear water is used for repeatedly cleaning the raw materials, impurities on the raw materials are removed, and the influence of the impurities on the fertilizer prepared in the later period is reduced;

s7, reaction in a reaction kettle: putting the mixed raw materials into a reaction kettle, and then pouring 0.2 part of cellulase, 0.3 part of pectinase, 0.3 part of protease, 0.2 part of glucoamylase, 0.3 part of glucanase, 0.2 part of 4-beta-mannuronic acid lyase, 0.03 part of acetic acid-sodium acetate, 0.05 part of ethanol, 0.06 part of aspergillus niger, 0.07 part of neurospora crassa, 0.04 part of bacillus subtilis, 0.02 part of phosphorus pentoxide, 0.02 part of potassium oxide, 0.02 part of calcium phosphate, 0.02 part of magnesium oxide, 0.8 part of organic reagent and other auxiliary materials into the reaction kettle filled with raw material powder, so that the raw materials can be decomposed under the action of the auxiliary materials;

EXAMPLE III

s2, washing: the method comprises the following steps of repeatedly cleaning raw materials by using a large amount of clear water for 7 parts of seaweed, 5 parts of seaweed residues, 6 parts of microalgae residues, 4 parts of Ascophyllum nodosum, 1 part of kelp, 4 parts of kelp, 3 parts of gulfweed, 2 parts of Chelidonium majus, 2 parts of dunaliella, 2 parts of Arthropoda, 3 parts of Fucus vesiculosus, 1 part of Enteromorpha prolifera, 1 part of Ulva lactuca, 3 parts of Kappaphycus, 3 parts of brown algae, 2 parts of citrus peel residues and 4 parts of shells, removing impurities on the raw materials, and reducing the influence of the impurities on the fertilizers manufactured in the later period;

s7, reaction in a reaction kettle: putting the mixed raw materials into a reaction kettle, and then pouring 0.1 part of cellulase, 0.1 part of pectinase, 0.2 part of protease, 0.1 part of glucoamylase, 0.2 part of glucanase, 0.1 part of 4-beta-mannuronic acid lyase, 0.02 part of acetic acid-sodium acetate, 0.04 part of ethanol, 0.05 part of aspergillus niger, 0.06 part of neurospora crassa, 0.03 part of bacillus subtilis, 0.01 part of phosphorus pentoxide, 0.01 part of potassium oxide, 0.01 part of calcium phosphate, 0.01 part of magnesium oxide, 0.7 part of organic reagent and other auxiliary materials into the reaction kettle filled with raw material powder, so that the raw materials can be decomposed under the action of the auxiliary materials;

The preparation method comprises the steps of firstly cleaning raw materials, conveniently removing impurities on the raw materials, reducing poor effect of produced fertilizers caused by the existence of the impurities, then placing the raw materials in the sun for insolation, enabling redundant elements in the raw materials to appear on the surfaces of the raw materials in a crystallization mode, then cleaning the surfaces of the raw materials by cleaning brushes by workers, so as to reduce the influence of surface elements on the quality of the fertilizers, then placing the raw materials into a pulverizer for pulverization, stirring and mixing the raw materials in a stirrer, so that the raw materials can be mixed together, increasing the uniform distribution of nutrients in the production process of the fertilizers, after uniform mixing, placing the raw materials into a reaction kettle, then pouring auxiliary materials into the reaction kettle, so that the raw materials and the auxiliary materials react in the reaction kettle, so as to facilitate the decomposition of the raw materials, then placing the raw materials in the reaction kettle into the fermentation kettle for fermentation, the raw materials are further decomposed, zeolite and shells are added in a fermentation tank, so that the raw materials are more fully fermented, after the fermentation is completed, the raw materials are separated through a differential centrifuge and a filtering device, so that impurities are further separated, after the separation is completed, workers put the raw materials into a granulator, the raw materials are prepared through the granulator, so that the raw materials are converted into composite seaweed fertilizer particles, the seaweed fertilizer is convenient to store due to the fact that the seaweed fertilizer is particles, wherein algae organisms contain a large number of elements and can provide nutrition for plants, compared with organic fertilizers, the main raw materials of the seaweed fertilizer are algae, cost can be effectively reduced in the manufacturing process, the environment can be protected, and the environment optimization effect is realized, the manufacturing method changes the traditional evaporation concentration process, saves energy consumption, and adopts the processes of drying, cooling, reaction, fermentation and the like, can make full use of various nutrient components in the algae, and further increase the growth efficiency of plants.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A compound seaweed fertilizer is characterized in that: comprises raw materials and auxiliary materials; the raw material components and the weight portion ratio are as follows: 7-9 parts of seaweed, 5-7 parts of algae residue, 6-8 parts of microalgae residue, 4-6 parts of Ascophyllum nodosum, 1-3 parts of kelp, 4-6 parts of kelp, 3-5 parts of gulfweed, 2-4 parts of Chelidonium majus, 2-4 parts of dunaliella, 2-4 parts of Arthropoda, 3-5 parts of Fucus vesiculosus, 1-3 parts of Enteromorpha prolifera, 1-3 parts of Ulva lactuca, 3-5 parts of Kappaphycus, 3-5 parts of brown algae, 2-4 parts of citrus peel residue, 1-3 parts of zeolite, 4-6 parts of shell and 4-6 parts of urea;

the auxiliary materials comprise the following components in parts by weight: 0.1-0.3 part of cellulase, 0.1-0.4 part of pectinase, 0.2-0.4 part of protease, 0.1-0.3 part of glucoamylase, 0.2-0.4 part of glucanase, 0.1-0.4 part of 4-beta-mannuronic acid lyase, 0.02-0.04 part of acetic acid-sodium acetate, 0.04-0.06 part of ethanol, 0.05-0.07 part of aspergillus niger, 0.06-0.08 part of neurospora crassa, 0.03-0.05 part of bacillus subtilis, 0.01-0.03 part of phosphorus pentoxide, 0.01-0.03 part of potassium oxide, 0.01-0.03 part of calcium phosphate, 0.01-0.03 part of magnesium oxide, 0.7-0.9 part of organic reagent and the balance of water.

2. The compound seaweed fertilizer as set forth in claim 1, characterized in that: the raw material components and the weight portion ratio are as follows: 9 parts of seaweed, 7 parts of algal residue, 8 parts of microalgal residue, 6 parts of Ascophyllum nodosum, 3 parts of kelp, 6 parts of kelp, 5 parts of gulfweed, 4 parts of Chelidonium majus, 4 parts of sargassum, 4 parts of Arthropoda, 5 parts of Fucus vesiculosus, 3 parts of Enteromorpha prolifera, 3 parts of Ulva lactuca, 5 parts of Kappaphycus, 5 parts of brown algae, 4 parts of citrus peel residue, 3 parts of zeolite, 6 parts of shell and 6 parts of urea; the auxiliary materials comprise the following components in parts by weight: 0.3 part of cellulase, 0.4 part of pectinase, 0.4 part of protease, 0.3 part of glucoamylase, 0.4 part of glucanase, 0.4 part of beta-mannuronic acid lyase, 0.04 part of acetic acid-sodium acetate, 0.06 part of ethanol, 0.07 part of aspergillus niger, 0.08 part of phleomycin griseus, 0.05 part of bacillus subtilis, 0.03 part of phosphorus pentoxide, 0.03 part of potassium oxide, 0.03 part of calcium phosphate, 0.03 part of magnesium oxide, 0.9 part of organic reagent and the balance of water.

3. The compound seaweed fertilizer as set forth in claim 1, characterized in that: the raw material components and the weight portion ratio are as follows: 8 parts of seaweed, 6 parts of algal residue, 7 parts of microalgae residue, 5 parts of Ascophyllum nodosum, 2 parts of kelp, 5 parts of kelp, 4 parts of gulfweed, 3 parts of Chelidonium majus, 3 parts of sargassum, 3 parts of Arthropoda, 4 parts of Fucus vesiculosus, 2 parts of Enteromorpha prolifera, 2 parts of Ulva lactuca, 4 parts of Kappaphycus, 4 parts of brown algae, 3 parts of citrus peel residue, 2 parts of zeolite, 5 parts of shell and 5 parts of urea;

the auxiliary materials comprise the following components in parts by weight: 0.2 part of cellulase, 0.3 part of pectinase, 0.3 part of protease, 0.2 part of glucoamylase, 0.3 part of glucanase, 0.2 part of 4-beta-mannuronic acid lyase, 0.03 part of acetic acid-sodium acetate, 0.05 part of ethanol, 0.06 part of aspergillus niger, 0.07 part of phleomycin griseus, 0.04 part of bacillus subtilis, 0.02 part of phosphorus pentoxide, 0.02 part of potassium oxide, 0.02 part of calcium phosphate, 0.02 part of magnesium oxide, 0.8 part of organic reagent and the balance of water.

4. The compound seaweed fertilizer as set forth in claim 1, characterized in that: the raw material components and the weight portion ratio are as follows: 7 parts of seaweed, 5 parts of algal residue, 6 parts of microalgae residue, 4 parts of Ascophyllum nodosum, 1 part of kelp, 4 parts of kelp, 3 parts of gulfweed, 2 parts of Chelidonium majus, 2 parts of sargassum, 2 parts of Arthropoda, 3 parts of Fucus vesiculosus, 1 part of Enteromorpha prolifera, 1 part of Ulva lactuca, 3 parts of Kappaphycus, 3 parts of brown algae, 2 parts of citrus peel residue, 1 part of zeolite, 4 parts of shell and 4 parts of urea; the auxiliary materials comprise the following components in parts by weight: 0.1 part of cellulase, 0.1 part of pectinase, 0.2 part of protease, 0.1 part of glucoamylase, 0.2 part of glucanase, 0.1 part of 4-beta-mannuronic acid lyase, 0.02 part of acetic acid-sodium acetate, 0.04 part of ethanol, 0.05 part of aspergillus niger, 0.06 part of phleomycin ragosus, 0.03 part of bacillus subtilis, 0.01 part of phosphorus pentoxide, 0.01 part of potassium oxide, 0.01 part of calcium phosphate, 0.01 part of magnesium oxide, 0.7 part of organic reagent and the balance of water.

5. The method for preparing a compound seaweed fertilizer as claimed in claim 1, 2, 3 or 4, wherein: the method comprises the following steps: