CN104829300A - Trace element slow release fertilizer and preparation method thereof - Google Patents

Abstract

The invention discloses a trace element slow release fertilizer and a preparation method thereof. The trace element comprises the following raw materials by weight: 20-30 parts of paddy rice straw, 10-15 parts of bamboo slag, 20-30 parts of wood chip, 5-10 parts of limestone powder, 1-3 parts of cement, 20-30 parts of kaolin, 4-8 parts of sodium selenite, 10-15 parts of potassium permanganate, 6-9 parts of ammonium molybdate, 8-12 parts of boric acid, 6-10 parts of manganous sulfate monohydrate, 9-13 parts of calcium hydrogen phosphate, 15-20 parts of ammonium chloride, 4-5 parts of cross-linking agent and a proper amount of water. According to the invention, paddy rice and bamboo straw are performed with ball milling and centrifugation to obtain fiber with large granularity, and the fiber is sealed and charred through high temperature to obtain the crude active carbon, the crude active carbon and the chemical trace element required by the crops are stirred under supersonic wave condition, these elements and the charing granules are tightly contacted, loss probability in field can be smaller, the trace element generally are precious, slow release fertilizer can perform better performance effect under condition that labor force is saved, and can be fully used.

Description

A kind of trace-element slow-release fertilizer and preparation method thereof

Technical field

The invention belongs to the Technology field of fertilizer, be specifically related to a kind of trace-element slow-release fertilizer and preparation method thereof.

Background technology

Peasant grabs farming season to rob, crop straw burning of having to, and crop straw burning pollutes the Sustainable development having had influence on Chinese agriculture and national economy, becomes serious socioeconomic problem and the hidden danger of traffic accident.Straw charring is by stalk drying or dries, pulverizes, and then in equipment for preparing charcoal, the operations such as drying, destructive distillation, cooling, make the process of charcoal by loose stalk.Due to the core process that destructive distillation is straw charring, so also have people with stalk destructive distillation acute pyogenic infection of finger tip straw charring, the charcoal produced by straw charring can be described as straw charcoal or straw charcoal.Because straw charring is different from traditional charcoal method, it take mechanical workout as Main Means, and thus straw charcoal is otherwise known as machine-processed straw charcoal or machine-made charcoal.Because straw charring has expanded the raw material sources of charcoal production, so there is people that the charcoal produced by mechanical destructive distillation for raw material with the biomass such as stalk, timber is referred to as biomass charcoal, referred to as charcoal.

Gac a kind ofly has special microlitic structure, flourishing nanometer level microporous, specific surface area up to 1000m ^2Hthe good adsorbent of/more than g and catalyzer, by the widespread use of each field.

Compound manure can provide most nutriment of plant-growth, be basic three large key elements mixing stone flours or organic tunning with N, P, K be that basic bed material produces, be widely used in the cultivation of various farm crop, essential, and more and more trend towards industrialization along with agricultural, fertilizer abuse and irrational use, not only contaminate environment, more cause the unnecessary wasting of resources, against the theory of Sustainable development.

Fertilizer of the present invention will accomplish Rational Application, become the fertilizer with certain slow release effect essential, fertilizer is splashed to crop surface, with slowly cracking after making moist, the effect nutritive element of release the inside, coating is conducive to the speed of fertilizer cracking, be unlikely to immediately pulverizing and cause leakage, the coating agent of stone flour of simultaneously adulterating can prevent from luming because making moist between fertilizer, the gac that simultaneously inner charing stalk obtains has the ability of absorption nutritive element, be unlikely to run off too fast with current, save fertilizer, increase operation rate, utilize stalk for raw material simultaneously, not only alleviating energy crisis, more protection of the environment.

Summary of the invention

A kind of trace-element slow-release fertilizer, it is characterized in that, be made up of the raw material of following weight part: rice straw 20 ~ 30, bamboo slag 10 ~ 15, wood chip 20 ~ 30, limestone powder 5 ~ 10, cement 1 ~ 3, kaolin 20 ~ 30, Sodium Selenite 4 ~ 8, potassium permanganate 10 ~ 15, ammonium molybdate 6 ~ 9, boric acid 8 ~ 12, manganese sulfate 6 ~ 10, secondary calcium phosphate 9 ~ 13, ammonium chloride 15 ~ 20, linking agent 4 ~ 5 and appropriate water;

Described linking agent is made up of the raw material of following weight part: acrylamide 8 ~ 10, Ethylene glycol dimethacrylate 2 ~ 3, glycerine 2 ~ 4, Wingdale 10 ~ 15, ethanol 5 ~ 8, sodium lauryl sulphate 2 ~ 4, industrial Viscotrol C 12 ~ 16 and appropriate water; Preparation method is: ethanol is added the water dilution of 5 ~ 8 times by (1), for stirring and dissolving Ethylene glycol dimethacrylate; (2) Wingdale is ground into the powder of 200 ~ 250 mesh sieves, add the water of glycerine, sodium lauryl sulphate, industrial Viscotrol C and about 3 times total weight parts, stir and disperse 20 ~ 30min uniformly emulsion; (3) described to (1) solution mixing acrylamide is added in the emulsion described in (2), stir disperse 30 ~ 40min, be incubated 70 ~ 90 DEG C for subsequent use.

A preparation method for trace-element slow-release fertilizer, is characterized in that, comprises following step:

(1) mixing water rice straw, bamboo slag and wood chip, then adds the water soaking 8 ~ 10h of 4 ~ 7 times, and ball milling 30 ~ 40min becomes homogenate, and in centrifugal rear removal, the pulp of cleer and peaceful precipitation top layer about 5cm, dries to obtain pulvis by remainder;

(2) put into charring furnace by under described to (1) pulvis air-proof condition, temperature 600 ~ 700 DEG C carries out heating charing 5 ~ 8h, obtains carbonizing production after being cooled to room temperature;

(3) water of 4 ~ 5 and the carbonizing production described in (2) is added after Sodium Selenite, potassium permanganate, ammonium molybdate, boric acid, manganese sulfate, secondary calcium phosphate and ammonium chloride being mixed, at 70 ~ 80 DEG C, 30 ~ 50min is stirred under the ultrasound condition of power 700 ~ 900W, kaolin is mixed after heating is concentrated, in granulating disc granulation, particle diameter 3 ~ 4mm;

(4) combined lime stone flour, cement, linking agent and other remaining component, add the water of 3 ~ 5 times of its weight parts, stirs and disperse 30 ~ 40min to emulsus homogenate, be evenly sprayed to (3) described particle surface of preheating 80 ~ 90 DEG C, finally dry.

Beneficial effect of the present invention: the stalk of paddy rice, bamboo is milled to a certain degree and centrifugally obtains lower floor by the present invention, the cellulosic part that granularity is larger, rough gac is obtained through elevated-temperature seal charing, stirred under Ultrasonic Conditions by the chemistry trace element needed with crop, these elements are allowed to contact more closely with charing grain, the probability run off when being released into field is like this also less, trace element is general all very precious, the easier of slow release type better plays effect when saving labor force, makes full use of.

Embodiment

Embodiment 1:

A kind of trace-element slow-release fertilizer, it is characterized in that, be made up of the raw material of following weight part (Kg): rice straw 30, bamboo slag 10, wood chip 20, limestone powder 9, cement 1, kaolin 30, Sodium Selenite 4, potassium permanganate 15, ammonium molybdate 6, boric acid 9, manganese sulfate 8, secondary calcium phosphate 9, ammonium chloride 20, linking agent 5 and appropriate water;

Described linking agent is made up of the raw material of following weight part: acrylamide 8, Ethylene glycol dimethacrylate 2, glycerine 2, Wingdale 10, ethanol 5, sodium lauryl sulphate 4, industrial Viscotrol C 14 and appropriate water; Preparation method is: ethanol is added the water dilution of 5 ~ 8 times by (1), for stirring and dissolving Ethylene glycol dimethacrylate; (2) Wingdale is ground into the powder of 200 ~ 250 mesh sieves, add the water of glycerine, sodium lauryl sulphate, industrial Viscotrol C and about 3 times total weight parts, stir and disperse 20 ~ 30min uniformly emulsion; (3) described to (1) solution mixing acrylamide is added in the emulsion described in (2), stir disperse 30 ~ 40min, be incubated 70 ~ 90 DEG C for subsequent use.

A preparation method for trace-element slow-release fertilizer, is characterized in that, comprises following step:

(1) mixing water rice straw, bamboo slag and wood chip, then adds the water soaking 8 ~ 10h of 4 ~ 7 times, and ball milling 30 ~ 40min becomes homogenate, and in centrifugal rear removal, the pulp of cleer and peaceful precipitation top layer about 5cm, dries to obtain pulvis by remainder;

(2) put into charring furnace by under described to (1) pulvis air-proof condition, temperature 600 ~ 700 DEG C carries out heating charing 5 ~ 8h, obtains carbonizing production after being cooled to room temperature;

(3) water of 4 ~ 5 and the carbonizing production described in (2) is added after Sodium Selenite, potassium permanganate, ammonium molybdate, boric acid, manganese sulfate, secondary calcium phosphate and ammonium chloride being mixed, at 70 ~ 80 DEG C, 30 ~ 50min is stirred under the ultrasound condition of power 700 ~ 900W, kaolin is mixed after heating is concentrated, in granulating disc granulation, particle diameter 3 ~ 4mm;

(4) combined lime stone flour, cement, linking agent and other remaining component, add the water of 3 ~ 5 times of its weight parts, stirs and disperse 30 ~ 40min to emulsus homogenate, be evenly sprayed to (3) described particle surface of preheating 80 ~ 90 DEG C, finally dry.

Trace-element slow-release fertilizer ginseng folder ordinary nutritional class fertilizer of the present invention is used for planting common agricultural experiment; select 5 mu of planting bases; use fertilizer of the present invention; as experimental group; common fertilizer is executed in 5 mu of bases of control group routinely planting requirement; other condition is identical; experiment proves, though the farm crop initial stage fertilizer cost of experimental group plantation is higher, the later stage can reduce Fertilizer application amount; and crop growing state is better; output promotes to some extent, compares according to composition fruit, saves labour; protection of the environment, on year-on-year basis economic raising 18.6%.

Claims (2)

1. a trace-element slow-release fertilizer, it is characterized in that, be made up of the raw material of following weight part: rice straw 20 ~ 30, bamboo slag 10 ~ 15, wood chip 20 ~ 30, limestone powder 5 ~ 10, cement 1 ~ 3, kaolin 20 ~ 30, Sodium Selenite 4 ~ 8, potassium permanganate 10 ~ 15, ammonium molybdate 6 ~ 9, boric acid 8 ~ 12, manganese sulfate 6 ~ 10, secondary calcium phosphate 9 ~ 13, ammonium chloride 15 ~ 20, linking agent 4 ~ 5 and appropriate water;

Described linking agent is made up of the raw material of following weight part: acrylamide 8 ~ 10, Ethylene glycol dimethacrylate 2 ~ 3, glycerine 2 ~ 4, Wingdale 10 ~ 15, ethanol 5 ~ 8, sodium lauryl sulphate 2 ~ 4, industrial Viscotrol C 12 ~ 16 and appropriate water; Preparation method is: ethanol is added the water dilution of 5 ~ 8 times by (1), for stirring and dissolving Ethylene glycol dimethacrylate; (2) Wingdale is ground into the powder of 200 ~ 250 mesh sieves, add the water of glycerine, sodium lauryl sulphate, industrial Viscotrol C and about 3 times total weight parts, stir and disperse 20 ~ 30min uniformly emulsion; (3) described to (1) solution mixing acrylamide is added in the emulsion described in (2), stir disperse 30 ~ 40min, be incubated 70 ~ 90 DEG C for subsequent use.

2. the preparation method of a kind of trace-element slow-release fertilizer according to claim 1, is characterized in that, comprise following step:

(1) mixing water rice straw, bamboo slag and wood chip, then adds the water soaking 8 ~ 10h of 4 ~ 7 times, and ball milling 30 ~ 40min becomes homogenate, and in centrifugal rear removal, the pulp of cleer and peaceful precipitation top layer about 5cm, dries to obtain pulvis by remainder;

(2) put into charring furnace by under described to (1) pulvis air-proof condition, temperature 600 ~ 700 DEG C carries out heating charing 5 ~ 8h, obtains carbonizing production after being cooled to room temperature;

(3) water of 4 ~ 5 and the carbonizing production described in (2) is added after Sodium Selenite, potassium permanganate, ammonium molybdate, boric acid, manganese sulfate, secondary calcium phosphate and ammonium chloride being mixed, at 70 ~ 80 DEG C, 30 ~ 50min is stirred under the ultrasound condition of power 700 ~ 900W, kaolin is mixed after heating is concentrated, in granulating disc granulation, particle diameter 3 ~ 4mm;

(4) combined lime stone flour, cement, linking agent and other remaining component, add the water of 3 ~ 5 times of its weight parts, stirs and disperse 30 ~ 40min to emulsus homogenate, be evenly sprayed to (3) described particle surface of preheating 80 ~ 90 DEG C, finally dry.