CN105541469A - Heavy metal harm reducing magnetization slow-release fertilizer and preparation method thereof - Google Patents

Abstract

The present invention discloses a heavy metal harm reducing magnetization slow-release fertilizer and a preparation method thereof, the magnetization slow-release fertilizer comprises the following parts by weight of raw materials: 200-240 parts of rapeseed cake powder, 24-26 parts of calcium ammonium nitrate, 30-35 parts of potassium dihydrogen phosphate, 160-180 parts of bagasse, 15-20 parts of actinolite powder, 7-9 parts of zinc sulfate powder, 70-80 parts of fly ash, 45-55 parts of pyrite ash, 20-24 parts of tapioca starch, 4-6 parts of calcium acetate, 10-12 parts of a complex biological agent and proper amount of water; the magnetization slow-release fertilizer is prepared in inorganic and organic mixing manner, can effectively improve the nutrient content of the fertilizer, through double magnetization of the fertilizer and activation of the actinolite powder and other raw materials, crop root superoxide dismutase and catalase activity can be significantly improved, oxidative stress caused by residual heavy metals in soil can be eliminated, the integrity of root cell membranes can be maintained, plant tolerance to heavy metals can be enhanced, plants can be prevented from harm and harm to plants can be reduced.

Description

A kind of magnetization slow release fertilizer reducing Heavy Metal Pollution and preparation method thereof

Technical field

The present invention relates to a kind of technical field of fertilizers, particularly a kind of magnetization slow release fertilizer reducing Heavy Metal Pollution and preparation method thereof.

Background technology

China is typical large agricultural country, and the many cultivated areas of the size of population are few, and chemical fertilizer plays very important effect in the production process of farm crop.Showing according to the study, can there is various physicochemical change in the nutrients such as the nitrogen be manured into soil, phosphorus, potassium, and wherein nitrogen can pass through the losses such as volatilization, leaching, denitrification, and phosphorus element is easy to by the Al in soil ³⁺, Fe ³⁺and Ca ²⁺, Mg ²⁺fix etc. various ion, form stable throw out or formed to close with iron, aluminum oxide etc. and store state phosphorus and progressively lose its validity.These factors all can cause the utilization ratio of chemical fertilizer application to reduce.The use of chemical fertilizer also can bring the pollution of environment simultaneously, as the eutrophication etc. of Greenhouse effect, water body.Therefore optimize fertilizer structure, popularization slowly-releasing and release and release control fertilizer are the effective ways improving utilization rate of fertilizer.

Soil-crop system pollution of trace is an organic mineral complex system that contain the synthesis of various ion-transfer, water molecules migration, enzyme and microbial process, magnetic field is by producing soil and biomagnetism effect to the effect of metal magnetic in the electron transmission in system, dipole orientations, enzyme and microorganism etc., to the release of soil nutrient, the ability of soil water-reataining fertilizer-keeping, water supply fertilizer is increased equally.Therefore, use Magnitizing method to prepare fertilizer to be used in soil plantation aspect there are very large potentiality.

The present inventor has prepared a kind of novel magnetization slow release fertilizer for this reason, respectively magnetized solid is carried out to fertiliser granulates and coating liquid carries out liquid magnetized, magnetic carrier is mixed by certain proportion with nitrogen, phosphorus, potassium and trace element etc., can under identical chemical fertilizer drops into, increase crop yield and utilization rate of fertilizer, soil nutrient status improved and improves quality of agricultural product, increasing income increases in grain production, increasing farmers' income and promoting agricultural development has important meaning.

Summary of the invention

The present invention compensate for the deficiencies in the prior art, provides a kind of magnetization slow release fertilizer reducing Heavy Metal Pollution and preparation method thereof.

Technical scheme of the present invention is as follows:

Fertilizer of the present invention is made up of the raw material of following weight part: coarse colza meal 200-240, calcium ammonium nitrate 24-26, potassium primary phosphate 30-35, bagasse 160-180, Tremoliteor Tremoliteasbestos powder 15-20, zinc sulphate powder 7-9, flyash 70-80, sulfurous iron ore ash 45-55, tapioca (flour) 20-24, calcium acetate 4-6, composite bacteria agent 10-12, water are appropriate;

Described composite bacteria agent comprises sulphate reducing bacteria, different oxygen iron-reducing bacterium and subtilis, and proportion is 1:1:2.

The concrete steps of the preparation of described fertilizer are as follows:

(1) flyash is placed in High Temperature Furnaces Heating Apparatus, calcine 20 minutes at 800-900 DEG C, cooling after taking out, then sulfurous iron ore ash is dropped in High Temperature Furnaces Heating Apparatus, calcine 30 minutes at 500-600 DEG C, cooling after taking out, two kinds of calcination ash mixed and add the macrobead magnetite that particle diameter is greater than 5mm, making calcination ash and magnetite weight ratio be 4:1, concussion is rocked after 40-60 minute and is crossed 80-100 mesh sieve, obtain preliminary magnetized mixed calcining ash, for subsequent use;

(2) will drop in fermentation vat after coarse colza meal, bagasse, Tremoliteor Tremoliteasbestos powder co-grinding, fermentation heap water content control be 30-40%, fermentation 20-25 days, after having fermented, fermentation materials is taken out broken squeezing, isolates fermentation residue and fermented liquid;

(3) fermentation residue, step 1 gained mixed calcining ash and calcium ammonium nitrate, potassium primary phosphate mixed and stir, being placed in tablets press granulation, gained particle is placed in magnetizer, under the field intensity of 3500-4500mT, magnetize 10-15 second;

(4) step 2 gained fermented liquid is mixed with tapioca (flour), and be heated to 60-80 DEG C, keep 10-20 minute, in solution, add calcium acetate, zinc sulphate powder and other leftover materials again after being cooled to room temperature, and be heated to 60-70 DEG C, chelating 20-40 minute, in chelating liquid, composite bacteria agent is added again after cooling, stir, gained solution is placed in magnetizer, magnetize 5 minutes under the field intensity of 300-400mT;

(5) adopt the mode of high-pressure fog to be uniformly coated on step 3 gained magnetized particles outside surface, weighing and bagging after oven drying at low temperature step 4 gained magnetization coating liquid, and the warehouse be placed in away from ferrous metal material is preserved.

Beneficial effect of the present invention:

Magnetized use can cause the part hydrogen bond fission between coating liquid water molecules, the oxygen level of coating liquid is increased, thus causes the increase of ultra-oxygen anion free radical, makes coating liquid produce the insect killing effect of certain harmful bacteria, ensures the health of crop root.

After magnetization, in system, hydrone and water dimer molecule increase coating liquid freely, stripping nutrient is more easily entered in crop cell, to promote the metabolism of cell, strengthen cell viability, improve the photosynthesis of crop and the receptivity to nutritive substance, better complete slow-releasing and controlled-releasing action, promote crop growth.

Fertilizer of the present invention adopts mode that is inorganic and organic mixture, effectively can improve the nutrient content of fertilizer, simultaneously by the dual magnetization of fertilizer, again through the activation of the raw materials such as Tremoliteor Tremoliteasbestos powder, crop root superoxide-dismutase and catalatic activity can be significantly improved, eliminate the oxidative stress that in soil, residual heavy metal causes, make root cell film keep integrity, thus strengthen the tolerance of plant heavy metal, make plant from or alleviate injury.

Specific embodiments

Below in conjunction with following embodiment, the present invention is described in further detail:

The raw material taking following weight part (kg) is made: coarse colza meal 220, calcium ammonium nitrate 25, potassium primary phosphate 33, bagasse 170, Tremoliteor Tremoliteasbestos powder 18, zinc sulphate powder 8, flyash 75, sulfurous iron ore ash 50, tapioca (flour) 22, calcium acetate 5, composite bacteria agent 11, water are appropriate;

Described composite bacteria agent comprises sulphate reducing bacteria, different oxygen iron-reducing bacterium and subtilis, and proportion is 1:1:2.

The concrete steps of the preparation of described fertilizer are as follows:

(1) flyash is placed in High Temperature Furnaces Heating Apparatus, calcine 20 minutes at 850 DEG C, cooling after taking out, then sulfurous iron ore ash is dropped in High Temperature Furnaces Heating Apparatus, calcine 30 minutes at 550 DEG C, cooling after taking out, two kinds of calcination ash mixed and add the macrobead magnetite that particle diameter is greater than 5mm, making calcination ash and magnetite weight ratio be 4:1, concussion is rocked after 50 minutes and is crossed 80 mesh sieves, obtain preliminary magnetized mixed calcining ash, for subsequent use;

(2) will drop in fermentation vat after coarse colza meal, bagasse, Tremoliteor Tremoliteasbestos powder co-grinding, fermentation heap water content control be 30-40%, ferments 24 days, after having fermented, fermentation materials is taken out broken squeezing, isolates fermentation residue and fermented liquid;

(3) fermentation residue, step 1 gained mixed calcining ash and calcium ammonium nitrate, potassium primary phosphate mixed and stir, being placed in tablets press granulation, gained particle is placed in magnetizer, magnetize 11 seconds under the field intensity of 4000mT;

(4) step 2 gained fermented liquid is mixed with tapioca (flour), and be heated to 70 DEG C, keep 15 minutes, in solution, add calcium acetate, zinc sulphate powder and other leftover materials again after being cooled to room temperature, and be heated to 65 DEG C, chelating 30 minutes, in chelating liquid, composite bacteria agent is added again after cooling, stir, gained solution is placed in magnetizer, magnetize 5 minutes under the field intensity of 300mT;

(5) adopt the mode of high-pressure fog to be uniformly coated on step 3 gained magnetized particles outside surface, weighing and bagging after oven drying at low temperature step 4 gained magnetization coating liquid, and the warehouse be placed in away from ferrous metal material is preserved.

In order to verify the practicality of fertilizer of the present invention further, contriver have chosen the experimental plot of 10 mu of heavy metal slight pollutions, the concrete result of use of fertilizer of the present invention is measured by plantation wheat, wherein 5 mu use magnetization slow release fertilizer of the present invention as base manure as experimental group, other 5 mu use commercially available common fertilizer as base manure, two kinds of fertilizer usage quantitys are equal, be every mu of 1500kg, between planting season, the management mode of 2 groups is identical, and at random the topsoil soils of 2 groups is sampled, carry out the mensuration of nutrient, finally measure output again, data are as follows:

Project	Control group	Experimental group
			Plant seedling rate (%) after 10 days	84.8	97.7
Soil organic matter content (%)	16.1	21.6
			Total nitrogen content of soil (%)	1.40	1.76
Soil available phosphorus content (mg/kg)	70.27	105.45
			Soil Available potassium content (mg/kg)	146.64	197.59
Utilization rate of fertilizer (%)	23.5	40.1
			Wheat yield (kg/ mu)	412	502

After employing magnetization slow release fertilizer of the present invention as can be seen from the above data, the Content of available nutrient element of soil obviously increases, to the good promoter action of having grown of crop, in planting process, control group plant is higher and thin, experimental group is then relatively short strong, blade edge and shinny, illustrate that fertilizer of the present invention effectively can control the overgrowing in plant early stage, and provide adequate nutrients for the later stage, finally improve crop yield.

Claims (2)

1. magnetization slow release fertilizer reducing Heavy Metal Pollution and preparation method thereof, it is characterized in that, be made up of the raw material of following weight part: coarse colza meal 200-240, calcium ammonium nitrate 24-26, potassium primary phosphate 30-35, bagasse 160-180, Tremoliteor Tremoliteasbestos powder 15-20, zinc sulphate powder 7-9, flyash 70-80, sulfurous iron ore ash 45-55, tapioca (flour) 20-24, calcium acetate 4-6, composite bacteria agent 10-12, water are appropriate;

Described composite bacteria agent comprises sulphate reducing bacteria, different oxygen iron-reducing bacterium and subtilis, and proportion is 1:1:2.

2. magnetization slow release fertilizer of the minimizing Heavy Metal Pollution according to claims 1 and preparation method thereof, is characterized in that, the concrete steps of preparation method are as follows:

(1) flyash is placed in High Temperature Furnaces Heating Apparatus, calcine 20 minutes at 800-900 DEG C, cooling after taking out, then sulfurous iron ore ash is dropped in High Temperature Furnaces Heating Apparatus, calcine 30 minutes at 500-600 DEG C, cooling after taking out, two kinds of calcination ash mixed and add the macrobead magnetite that particle diameter is greater than 5mm, making calcination ash and magnetite weight ratio be 4:1, concussion is rocked after 40-60 minute and is crossed 80-100 mesh sieve, obtain preliminary magnetized mixed calcining ash, for subsequent use;

(2) will drop in fermentation vat after coarse colza meal, bagasse, Tremoliteor Tremoliteasbestos powder co-grinding, fermentation heap water content control be 30-40%, fermentation 20-25 days, after having fermented, fermentation materials is taken out broken squeezing, isolates fermentation residue and fermented liquid;

(3) fermentation residue, step 1 gained mixed calcining ash and calcium ammonium nitrate, potassium primary phosphate mixed and stir, being placed in tablets press granulation, gained particle is placed in magnetizer, under the field intensity of 3500-4500mT, magnetize 10-15 second;

(4) step 2 gained fermented liquid is mixed with tapioca (flour), and be heated to 60-80 DEG C, keep 10-20 minute, in solution, add calcium acetate, zinc sulphate powder and other leftover materials again after being cooled to room temperature, and be heated to 60-70 DEG C, chelating 20-40 minute, in chelating liquid, composite bacteria agent is added again after cooling, stir, gained solution is placed in magnetizer, magnetize 5 minutes under the field intensity of 300-400mT;

(5) adopt the mode of high-pressure fog to be uniformly coated on step 3 gained magnetized particles outside surface, weighing and bagging after oven drying at low temperature step 4 gained magnetization coating liquid, and the warehouse be placed in away from ferrous metal material is preserved.