CN105238411A - Phosphogypsum soil conditioner capable of inhibiting diseases and pests of soil and preparation method thereof - Google Patents

Abstract

The invention discloses a phosphogypsum soil conditioner capable of inhibiting diseases and pests of soil. The soil conditioner is prepared from the following raw materials by weight: 24 to 26 parts of bean cake powder, 20 to 25 parts of methane liquid, 4 to 5 parts of EM microbial inoculum, 2 to 4 parts of cobalt sulfate, 10 to 12 parts of boron humate, 130 to 150 parts of phosphogypsum, 6 to 8 parts of abandoned lime peels, 24 to 26 parts of red mud, 19 to 21 parts of lobster powder, 6 to 8 parts of kiln dust and a proper amount of water. According to the phosphogypsum soil conditioner provided by the invention, fermentation residues are used to prepare a thoroughly-decomposed organic material by long-time aerobic-anaerobic mixed fermentation, and a variety of calcined phosphogyppsum loaded beneficial microbial inoculums of the soil are utilized at the same time, so microbial environment of the soil can be optimized, and propagations of the diseases and the pests in the soil are inhibited; meanwhile, a plurality of nutrient elements and easily-absorbable chelated trace elements are added, so disease resistance of crops can be improved, and yield of the crops is increased.

Description

A kind of phosphogypsum soil improvement agent suppressing soil disease and preparation method thereof

Technical field

The present invention relates to a kind of soil improvement agent technical field, particularly a kind of phosphogypsum soil improvement agent suppressing soil disease and preparation method thereof.

Background technology

China is a large agricultural country, along with the development of national economy, agricultural continues to increase the demand of phosphate fertilizer, facilitate developing rapidly of Phosphate Fertilizer Industry, but the simultaneously also a large amount of phosphogypsum of by-product in Wet-process Phosphoric Acid Production, along with the increase of phosphate fertilizer production, the problems such as phosphogypsum contaminate environment, land occupation are also further outstanding.Therefore, the resource utilization of phosphogypsum recycling has important practical significance, and is the needs solving environmental pollution, be also develop a circular economy, the needs of efficent use of resources.

For this reason, current inventor provides a kind of soil improvement agent using phosphogypsum as main raw material(s) and preparation method thereof, rational production technique is utilized to avoid the destruction of phosphogypsum to environment, take full advantage of the element useful to crop soil existed in phosphogypsum simultaneously, strengthen soil quality, delay the degeneration of soil, reduce the pollution of heavy metal, it is made to be widely used in agricultural as the available resource of one, for structure resource-conserving, environmentally friendly harmonious society contribute.

Summary of the invention

The present invention compensate for the deficiencies in the prior art, provides a kind of phosphogypsum soil improvement agent suppressing soil disease 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: soybean cake powder 24-26, methane liquid 20-25, EM microbial inoculum 4-5, rose vitriol 2-4, humic acids boron 10-12, phosphogypsum 130-150, discarded blue or green lemon skin 6-8, red mud 24-26, lobster powder 19-21, kiln ash 6-8, water are appropriate;

The concrete steps of the preparation of described soil improvement agent are as follows:

(1) stir after soybean cake powder, methane liquid, the mixing of lobster powder and drop in fermentation vat, EM microbial inoculum and suitable quantity of water is added again in fermentation vat, fermentation heap water content is kept to be 40-50%, after ferment in the open 14-16 days, fermentation heap is covered plastic film, ferment 6-9 days again, obtains tunning for subsequent use;

(2) step one gained tunning is squeezed, obtain fermented liquid and ferment slag, discarded blue or green lemon skin is pulverized levigate after and rose vitriol, humic acids boron jointly join in fermented liquid, fermented liquid is heated to 85-95 DEG C, continuous stirring 40-60 minute, fermentation chelating liquid is obtained after naturally cooling, for subsequent use;

(3) at 450-480 DEG C, calcine 25-35 minute after phosphogypsum powder comminution is thin, obtain phosphogypsum powder, then dry at red mud is placed in 200-250 DEG C and wear into fine powder, the grey and step 2 gained ferment slag mixing granulation by phosphogypsum powder, red mud powder, kiln;

(4) by step 2 gained fermentation chelating liquid and leftover materials mixing, after stirring, by high pressure spray nozzle, atomizing spray is carried out to step 3 gained particle, finally that particle is air-dry with gas blower at 35-40 DEG C, preserve after weighing pack.

The using method of modifying agent of the present invention is used or is used at soil shallow-layer after mixing with fertilizer, and every mu of consumption is 200-300kg.

Beneficial effect of the present invention:

Organic composition can be removed to the calcining of phosphogypsum and red mud in preparation process, avoid secondary pollution, in phosphogypsum, multiple acidic component can be complementary with the strong basicity of red mud simultaneously, regulate the pH value of soil improvement agent, the two can not only improve soil property after being combined, regulation and control P in soil H value, it contains the compositions such as higher Si, Ca, K, P and the required trace element of tens of kinds of farm crop also can promote that crop forms silicified cell, strengthen plant physiology usefulness and anti-adversity, effective raising crop yield, improves the quality of crop.

The use of discarded blue or green lemon skin can increase the content of modifying agent soil ulmin on the one hand, improve reclamation result, its a large amount of citric acids contained can promote the sequestering action of metal-salt and fermented liquid on the other hand, generate the multiple Chelating state nutritive element being easy to plant absorption, increase soil fertility.

The fermentation residue that phosphogypsum soil improvement agent of the present invention uses is through long-time and aerobic anaerobic mixed fermentation, the organic material of fully being become thoroughly decomposed, the useful microbial inoculum of multiple soil simultaneously utilizing calcined phosphogypsum to carry, Soil Microorganism environment can be optimized, suppress growing of soil disease and pest, multi-nutrient element and the easy interpolation absorbing chelated microelements simultaneously also can improve crop resistance, improves crop yield.

Specific embodiments

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

The raw material taking following weight (kg) is made: soybean cake powder 25, methane liquid 24, EM microbial inoculum 4, rose vitriol 3, humic acids boron 11, phosphogypsum 140, discarded blue or green lemon skin 7, red mud 25, lobster powder 20, kiln ash 7, water are appropriate;

The concrete steps of the preparation of described soil improvement agent are as follows:

(1) stir after soybean cake powder, methane liquid, the mixing of lobster powder and drop in fermentation vat, then add EM microbial inoculum and suitable quantity of water in fermentation vat, keeping fermentation heap water content to be 45%, ferment in the open is after 15 days, fermentation heap is covered plastic film, then ferments 8 days, obtain tunning for subsequent use;

(2) step one gained tunning is squeezed, obtains fermented liquid and ferment slag, discarded blue or green lemon skin is pulverized levigate after and rose vitriol, humic acids boron jointly join in fermented liquid, fermented liquid is heated to 90 DEG C, continuous stirring 50 minutes, obtains fermentation chelating liquid after naturally cooling, for subsequent use;

(3) calcine 30 minutes at 460 DEG C after phosphogypsum powder comminution is thin, obtain phosphogypsum powder, then dry at red mud is placed in 220 DEG C and wear into fine powder, the grey and step 2 gained ferment slag mixing granulation by phosphogypsum powder, red mud powder, kiln;

(4) by step 2 gained fermentation chelating liquid and leftover materials mixing, after stirring, by high pressure spray nozzle, atomizing spray is carried out to step 3 gained particle, finally that particle is air-dry with gas blower at 35 DEG C, preserve after weighing pack.

In order to further illustrate using value of the present invention, contriver have chosen one piece of rice test field rice cultivation, be divided into 2 parts of equal areas, before rice cultivation, first portion applies phosphogypsum soil improvement agent of the present invention as experimental group wherein, another part as a control group, then applies the paddy rice Special basal fertilizer of equivalent simultaneously to two groups, carry out fertilizer efficiency mensuration after rice growing every 30 days to the soil of two groups, add up output and disease incidence after rice harves, data are as follows again:

Project	Control group	Experimental group
			Paddy rice mean yield (kg/ mu)	611	656
The average available phosphorus contents of soil (mg/kg)	57.25	62.95
			The average quick-acting potassium content of soil (mg/kg)	150.53	162.31
The average alkali-hydrolyzable nitrogen content (mg/kg) of soil	33.01	39.89
			Disease incidence (%)	5.0	1.9

After above experimental data can be found out and employs phosphogypsum soil improvement agent of the present invention, during Rice Cropping, the average nutrient content of soil is all greater than control group, the pH value energy stable for extended periods of time state of soil simultaneously, its water-retentivity and nutrient preserving capability are also greatly increased, field disease and pest significantly reduces, improve the output of paddy rice, overall economic efficiency is increased dramatically.

Claims (2)

1. one kind is suppressed the phosphogypsum soil improvement agent of soil disease, it is characterized in that, be made up of the raw material of following weight part: soybean cake powder 24-26, methane liquid 20-25, EM microbial inoculum 4-5, rose vitriol 2-4, humic acids boron 10-12, phosphogypsum 130-150, discarded blue or green lemon skin 6-8, red mud 24-26, lobster powder 19-21, kiln ash 6-8, water are appropriate.

2. the phosphogypsum soil improvement agent of suppression soil disease according to claim 1, is characterized in that, the concrete steps of preparation method are as follows:

(1) stir after soybean cake powder, methane liquid, the mixing of lobster powder and drop in fermentation vat, then add EM microbial inoculum and suitable quantity of water in fermentation vat, keeping fermentation heap water content to be 40-50%, after ferment in the open 14-16 days, fermentation heap is covered plastic film, then the 6-9 days that ferments, obtain tunning for subsequent use;

(2) step one gained tunning is squeezed, obtains fermented liquid and ferment slag, discarded blue or green lemon skin is pulverized levigate after and rose vitriol, humic acids boron jointly join in fermented liquid, fermented liquid is heated to 85-95 DEG C, continuous stirring 40-60 minute, obtains fermentation chelating liquid after naturally cooling, for subsequent use;

(3) at 450-480 DEG C, calcine 25-35 minute after phosphogypsum powder comminution is thin, obtain phosphogypsum powder, then dry at red mud is placed in 200-250 DEG C and wear into fine powder, the grey and step 2 gained ferment slag mixing granulation by phosphogypsum powder, red mud powder, kiln;

(4) by step 2 gained fermentation chelating liquid and leftover materials mixing, after stirring, by high pressure spray nozzle, atomizing spray is carried out to step 3 gained particle, finally that particle is air-dry with gas blower at 35-40 DEG C, preserve after weighing pack.