CN105237265A - Phosphogypsum soil improver for improving soil salinization and preparation method for phosphogypsum soil improver - Google Patents

Phosphogypsum soil improver for improving soil salinization and preparation method for phosphogypsum soil improver Download PDF

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Publication number
CN105237265A
CN105237265A CN201510481870.XA CN201510481870A CN105237265A CN 105237265 A CN105237265 A CN 105237265A CN 201510481870 A CN201510481870 A CN 201510481870A CN 105237265 A CN105237265 A CN 105237265A
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China
Prior art keywords
soil
phosphogypsum
parts
fermentation
improver
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CN201510481870.XA
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Chinese (zh)
Inventor
徐继胜
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ANHUI NEW ZHONGYUAN CHEMICAL Co Ltd
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ANHUI NEW ZHONGYUAN CHEMICAL Co Ltd
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Priority to CN201510481870.XA priority Critical patent/CN105237265A/en
Publication of CN105237265A publication Critical patent/CN105237265A/en
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Abstract

The invention discloses a phosphogypsum soil improver for improving soil salinization. The soil improver is prepared from the following raw materials in parts by weight: 16-19 parts of peat, 7-9 parts of vermiculite power, 5-7 parts of calcium fulvic acid, 15-17 parts of red mud, 10-12 parts of brown coal, 26-28 parts of guano, 2-3 parts of an EM inoculant, 5-6 parts of waste lime peel, 4-5 parts of sodium sulfate, 90-100 parts of phosphogypsum and a proper amount of water. By virtue of a combined effect of calcined gypsum powder, brown coal and vermiculite power, the phosphogypsum soil improver can reduce soluble salt in soil and improve the base exchange ability of soil. As the cation exchange capacity of soil is increased, the ability of holding soil water and fertility of soil is improved, adsorption and utilization of salt base ions are improved, and the bio-availability of nutrients is improved, so that the soil improver plays roles of improving soil salinization, retaining fertilizers, and supplying fertilizers.

Description

A kind of phosphogypsum soil improvement agent improving the soil salinization 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 improving the soil salinization 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 improving the soil salinization 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: peat 16-19, vermiculite power 7-9, xanthohumic acid calcium 5-7, red mud 15-17, brown coal 10-12, guano 26-28, EM microbial inoculum 2-3, discarded blue or green lemon skin 5-6, sodium sulfate 4-5, phosphogypsum 90-100, water are appropriate;
The concrete steps of the preparation of described soil improvement agent are as follows:
(1) stir after peat, brown coal, guano mixing 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 45-55%, after ferment in the open 13-14 days, fermentation heap is covered plastic film, then the 6-8 days that ferments, obtain 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 xanthohumic acid calcium, sodium sulfate jointly join in fermented liquid, fermented liquid is heated to 75-85 DEG C, continuous stirring 40-60 minute, fermentation chelating liquid is obtained after naturally cooling, for subsequent use;
(3) at 430-460 DEG C, calcine 20-30 minute after phosphogypsum powder comminution is thin, obtain phosphogypsum powder, then dry at red mud is placed in 150-170 DEG C and wear into fine powder, by phosphogypsum powder, red mud powder, vermiculite power and step 2 gained ferment slag mixing granulation;
(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 30-40 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.
Phosphogypsum soil improvement agent of the present invention by calcining terra alba and brown coal, vermiculite power combined action can reduce solvable salinity in soil and improve the alkali exchange capacity of soil, along with the cation exchange capacity of soil increases the water-retention fertilizer ability too increasing soil, promote absorption and the utilization of base cation, improve the biological effectiveness of nutrient, and then play the effect of the improvement soil salinization and fertilizer supply and preservation.
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: peat 18, vermiculite power 8, xanthohumic acid calcium 6, red mud 16, brown coal 11, guano 27, EM microbial inoculum 2, discarded blue or green lemon skin 5, sodium sulfate 4, phosphogypsum 95, water are appropriate;
The concrete steps of the preparation of described soil improvement agent are as follows:
(1) stir after peat, brown coal, guano mixing 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 50%, ferment in the open is after 13 days, fermentation heap is covered plastic film, then ferments 7 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 xanthohumic acid calcium, sodium sulfate jointly join in fermented liquid, fermented liquid is heated to 80 DEG C, continuous stirring 50 minutes, obtains fermentation chelating liquid after naturally cooling, for subsequent use;
(3) calcine 25 minutes at 450 DEG C after phosphogypsum powder comminution is thin, obtain phosphogypsum powder, then dry at red mud is placed in 160 DEG C and wear into fine powder, by phosphogypsum powder, red mud powder, vermiculite power and step 2 gained ferment slag mixing granulation;
(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) 585 640
The average available phosphorus contents of soil (mg/kg) 56.53 64.68
The average quick-acting potassium content of soil (mg/kg) 159.15 163.25
The average alkali-hydrolyzable nitrogen content (mg/kg) of soil 35.60 38.46
Disease incidence (%) 5.1 3.7
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 improved the phosphogypsum soil improvement agent of the soil salinization, it is characterized in that, be made up of the raw material of following weight part: peat 16-19, vermiculite power 7-9, xanthohumic acid calcium 5-7, red mud 15-17, brown coal 10-12, guano 26-28, EM microbial inoculum 2-3, discarded blue or green lemon skin 5-6, sodium sulfate 4-5, phosphogypsum 90-100, water are appropriate.
2. the phosphogypsum soil improvement agent improving the soil salinization according to claim 1, it is characterized in that, the concrete steps of preparation method are as follows:
(1) stir after peat, brown coal, guano mixing 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 45-55%, after ferment in the open 13-14 days, fermentation heap is covered plastic film, then the 6-8 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 xanthohumic acid calcium, sodium sulfate jointly join in fermented liquid, fermented liquid is heated to 75-85 DEG C, continuous stirring 40-60 minute, obtains fermentation chelating liquid after naturally cooling, for subsequent use;
(3) at 430-460 DEG C, calcine 20-30 minute after phosphogypsum powder comminution is thin, obtain phosphogypsum powder, then dry at red mud is placed in 150-170 DEG C and wear into fine powder, by phosphogypsum powder, red mud powder, vermiculite power and step 2 gained ferment slag mixing granulation;
(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 30-40 DEG C, preserve after weighing pack.
CN201510481870.XA 2015-08-07 2015-08-07 Phosphogypsum soil improver for improving soil salinization and preparation method for phosphogypsum soil improver Withdrawn CN105237265A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105935023A (en) * 2016-05-31 2016-09-14 山东胜伟园林科技有限公司 Method of performing original soil greening on sulfate-containing sandy soil by using vermiculite-containing nutrient soil
CN106034450A (en) * 2016-05-31 2016-10-26 山东胜伟园林科技有限公司 Method for carrying out original-soil greening on coastal saline-alkaline land by adopting high-water-storage nutritional soil
CN106748540A (en) * 2017-02-10 2017-05-31 北京市农林科学院 A kind of conditioner for nutrient salinization soil high and preparation method and application

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110056261A1 (en) * 2007-12-13 2011-03-10 John William Carson Agronomic Nutrient Production
CN102936174A (en) * 2012-12-06 2013-02-20 湖南农业大学 Coconut shell powder-based rice transplanting matrix for rice transplanter
CN103951532A (en) * 2014-05-21 2014-07-30 安徽飞天农用生物科技股份有限公司 Compound soil remediation agent containing microorganism bacteria and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110056261A1 (en) * 2007-12-13 2011-03-10 John William Carson Agronomic Nutrient Production
CN102936174A (en) * 2012-12-06 2013-02-20 湖南农业大学 Coconut shell powder-based rice transplanting matrix for rice transplanter
CN103951532A (en) * 2014-05-21 2014-07-30 安徽飞天农用生物科技股份有限公司 Compound soil remediation agent containing microorganism bacteria and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
范美蓉等: "赤泥在土壤重金属污染治理和农业生产中的应用", 《土壤通报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105935023A (en) * 2016-05-31 2016-09-14 山东胜伟园林科技有限公司 Method of performing original soil greening on sulfate-containing sandy soil by using vermiculite-containing nutrient soil
CN106034450A (en) * 2016-05-31 2016-10-26 山东胜伟园林科技有限公司 Method for carrying out original-soil greening on coastal saline-alkaline land by adopting high-water-storage nutritional soil
CN106748540A (en) * 2017-02-10 2017-05-31 北京市农林科学院 A kind of conditioner for nutrient salinization soil high and preparation method and application
CN106748540B (en) * 2017-02-10 2020-06-09 北京市农林科学院 Conditioner for high-nutrient saline soil and preparation method and application thereof

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