CN102875258A - Soil conditioner and preparation method thereof - Google Patents

Soil conditioner and preparation method thereof Download PDF

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Publication number
CN102875258A
CN102875258A CN2012102778441A CN201210277844A CN102875258A CN 102875258 A CN102875258 A CN 102875258A CN 2012102778441 A CN2012102778441 A CN 2012102778441A CN 201210277844 A CN201210277844 A CN 201210277844A CN 102875258 A CN102875258 A CN 102875258A
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China
Prior art keywords
soil improvement
improvement agent
soil
preparation
stalk
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CN2012102778441A
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CN102875258B (en
Inventor
陈永春
周春财
李守勤
刘桂建
刘锦
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University of Science and Technology of China USTC
Huainan Mining Group Co Ltd
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University of Science and Technology of China USTC
Huainan Mining Group Co Ltd
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Abstract

The invention provides a soil conditioner and a preparation method thereof. The soil conditioner comprises the following components in part by weight: 6 to 12 parts of gangue, 8 to 16 parts of straw and 0.2 to 3 parts of ground phosphate rock. The invention further discloses a preparation method of the soil conditioner. The preparation method comprises the steps of mixing, curing, drying, grinding, filtering and the like. The soil conditioner and the preparation method of the soil conditioner overcome the defects in the prior art, and achieve the advantages that the raw material are easily available, the manufacturing cost is low, and the soil conditioning effect is excellent.

Description

Soil improvement agent and preparation method thereof
Technical field
The present invention relates to the soil improvement technology, relate in particular to a kind of soil improvement agent and preparation method thereof.
Background technology
In recent years, increase and the excessive use chemical fertilizer along with Agricultural Activities is destroyed Soil structure.At present, for keeping the unlikely exhaustion of soil nutrient, need to apply soil improvement agent to poor soil, be used for physics, chemistry and the biological property of improvement soil, make it be more suitable for plant-growth.There are many defectives in existing soil improvement agent, and on the one hand, existing soil improvement agent effective constituent is single, easily causes soil compaction, is unfavorable for that the farm crop root system is grown, growth; On the other hand, existing soil improvement agent produced this height, was not suitable for extensively using.
Simultaneously, along with the relative shortage of resource, environment goes from bad to worse, and the resource utilization of waste has become improves human habitat, ensures the important channel of society, economy and ecotope harmonious development.Coal gangue is the associated mineral of coal production, and along with the exploitation of coal, coal gangue has brought huge threat to soil, water body and ecotope at the bulk deposition on earth's surface.Stalk is as the agricultural wastes of output maximum, and present main processing approach is for burning, and it burns the visibility meter that the smog that produces has not only reduced atmosphere, also can cause great impact to human body.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of soil improvement agent, with realize raw material be simple and easy to, the advantage that cheap for manufacturing cost and reclamation result is good.
For achieving the above object, the technical solution used in the present invention is: a kind of soil improvement agent comprises each component that weight proportion is following:
Coal gangue 6-12 part;
Stalk 8-16 part;
Ground phosphate rock 0.2-3 part.
Further, soil improvement agent comprises each component that weight proportion is following:
Coal gangue 7-11 part;
Stalk 10-14 part;
Ground phosphate rock 0.5-2 part.
Further, the weight percent of Vanadium Pentoxide in FLAKES is 20-35% in the described ground phosphate rock.
Further, comprise each component that weight proportion is following: SiO in the described coal gangue 2: 50~62%; Al 2O 3: 18~26%; Fe 2O 3: 5-8%; CaO:2~5%; MgO:1~3%; Water ratio<30%.
Further, the water content of described stalk is 10-15%.
Coal gangue is as the associated mineral of coal production, contain a large amount of organic matters and abundant trace element, and both contained the nutritive elements such as the essential carbon of crop, nitrogen, phosphorus, potassium, in soil improvement agent of the present invention, play the effect that improves soil physical and chemical property and biological character, increases soil fertility, increases crop yield.Stalk can not only effectively be alleviated the soil compaction that causes to fertilize because of partially, improves the preserve moisture and fertility ability of soil, and can play getting fat drought resisting effect.Contain the necessary phosphorus nutrient of abundant plant-growth in the ground phosphate rock, can promote the growth of plant.Therefore, utilize coal gangue, stalk and ground phosphate rock to prepare soil improvement agent, not only can turn waste into wealth, realize the recycling of waste, can also bring good society and economic benefit.
Another object of the present invention also discloses a kind of preparation method of above-mentioned soil improvement agent, comprises the steps:
1) each component is mixed according to weight proportion;
2) with above-mentioned mixed material at 20-30 ℃ of lower slaking 20-40 days;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 10-15%;
4) dried crushing material is sieved, extracting screen underflow obtains soil improvement agent.
Further, the preparation method of soil improvement agent comprises the steps:
1) each component is mixed according to weight proportion;
2) with above-mentioned mixed material at 20-30 ℃ of lower slaking 25-35 days;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 10-15%;
4) dried crushing material is sieved, extracting screen underflow obtains soil improvement agent.
Further, described sieving adopted the 7-12 mesh sieve, preferably adopts 9 mesh sieves.
Further, before step 1), first crushed stalk being become particle diameter is the particle of 5-20mm, and coal gangue and ground phosphate rock are crushed to particle diameter<2mm.
Further, after step 4), with soil improvement agent compression pack.
Another object of the present invention, the method that also provides above-mentioned soil improvement to process, with the mixing with soil of above-mentioned soil improvement agent and continued improvement, described soil improvement agent is 1:5-20 with the weight ratio of soil to be improved.
Further, described soil improvement agent is 1:8 with the weight ratio of soil to be improved.
Soil improvement agent scientific formulation of the present invention is reasonable, has at least compared with prior art following several respects advantage:
1) raw material is simple and easy to, and the component of soil improvement agent of the present invention has all adopted waste resource: coal gangue, stalk and ground phosphate rock, greatly saved raw materials cost; And improve simultaneously utilization ratio and the economic worth of these waste resources;
2) reclamation result is good, contain the required various necessary trace element of abundant organic matter, available nitrogen, available phosphorus, effective potassium and plant-growth in the soil improvement agent of the present invention's preparation, can effectively improve soil property, increase water-permeable and the ventilation property of soil;
3) preparation method is simple, and the preparation of soil improvement agent need not comparatively high temps and particular device, is convenient to popularize.
Description of drawings
Fig. 1 is the preparation flow figure of soil improvement agent of the present invention.
Embodiment
Embodiment 1
Fig. 1 is the preparation flow figure of soil improvement agent of the present invention.
The present embodiment discloses a kind of soil improvement agent, comprises each component that weight proportion is following:
9 parts of coal gangues;
12 parts of stalks;
1 part in ground phosphate rock.
Wherein, the weight percent of Vanadium Pentoxide in FLAKES is 25% in the ground phosphate rock.Comprise each component that weight proportion is following: SiO in the described coal gangue 2: 60%; Al 2O 3: 20%; Fe 2O 3: 6%; CaO:4%; MgO:3%; Stalk in water ratio=7% the present embodiment adopts maize straw, is appreciated that the stalk of other kind farm crop all can be used as the raw material of soil improvement agent of the present invention.The water content of the maize straw that adopts in the present embodiment is 10-15%.
The preparation method of above-mentioned soil improvement agent as shown in Figure 1, comprises the steps:
1) corn straw smashing being become particle diameter is the particle of 5-10mm, and coal gangue and ground phosphate rock are crushed to particle diameter<2mm, and maize straw, coal gangue and ground phosphate rock are mixed according to above-mentioned weight proportion;
2) with above-mentioned mixed material 20-30 ℃ of lower slaking 30 days; Under the effect of air, maturing process can shorten stalk and form the organic cycle;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 15%; Drying is to make soil improvement agent be convenient to storage and transport, also guarantees the time of releasing (moisture is too high can to promote the breeding of microorganism, thereby causes organic in the short period decomposition) of soil improvement agent fertilizer efficiency simultaneously;
4) dried crushing material is crossed 9 mesh sieves (being that screen underflow is less than 2mm), extracting screen underflow obtains soil improvement agent.For the ease of storage, at last with above-mentioned soil improvement agent compression pack.
The effective constituent of soil improvement agent mainly contains among the present invention: available nitrogen, available phosphorus, effective potassium, organic matter, B, Zn, Cu, Fe, Mn etc.Available nitrogen content is measured with the alkaline hydrolysis diffusion process; Available phosphorus content is measured with hydrochloric acid-sulfuric acid extraction; Effective potassium content 1mol/L ammonium acetate lixiviate-flame spectrophotometric determination; Organic content is measured with potassium dichromate oxidation-Outside Heating Method; B, Zn, Cu, Fe, the micronutrient levelss such as Mn clear up with micro-wave digestion and measure with ICP-AES afterwards.
The content of measuring the effective constituent in the soil improvement agent by above detection method is as shown in table 1:
The content of the effective constituent in table 1 soil improvement agent
For studying the general applicability of above-mentioned soil improvement agent, adopt the disclosed soil improvement agent of the present embodiment respectively 5 kinds of soil to be improved, soil to be improved mixes by weight 8:1 with this soil improvement agent, the detection method of each effective constituent is the same, the detection data are as shown in table 2, wherein except organic content unit was g/kg, the unit of other compositions was mg/kg: wherein compound sample is will soil be improved and the mixed soil sample of soil improvement agent.
Detect data before and after table 2 soil improvement
By detecting as can be known, 5 kinds after improving soil and soil improvement agent in the present embodiment mix, the content of its various effective constituents has all surpassed national second grade soil standard.The soil improvement agent that the present embodiment provides can effectively improve soil physical and chemical property and biological character, increases soil fertility, and is conducive to increase crop yield.
Embodiment 2
The present embodiment discloses a kind of soil improvement agent, comprises each component that weight proportion is following:
7 parts of coal gangues;
15 parts of stalks;
0.5 part in ground phosphate rock.
Wherein, the weight percent of Vanadium Pentoxide in FLAKES is 20% in the ground phosphate rock.Comprise each component that weight proportion is following: SiO in the coal gangue 2: 50%; Al 2O 3: 26%; Fe 2O 3: 5%; CaO:4%; MgO:3%; Water ratio=12%.Stalk in the present embodiment adopts maize straw.The water content of the maize straw that adopts in the present embodiment is 15%.
The preparation method of above-mentioned soil improvement agent comprises the steps:
1) corn straw smashing being become particle diameter is the particle of 10-20mm, and coal gangue and ground phosphate rock are crushed to particle diameter<2mm, and each component is mixed according to above-mentioned weight proportion;
2) with above-mentioned mixed material 20-30 ℃ of lower slaking 20 days; Under the effect of air, maturing process can shorten stalk and form the organic cycle;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 13%; Drying is the storage and transport for the ease of soil improvement agent, also guarantees the time of releasing of soil improvement agent fertilizer efficiency simultaneously;
4) dried crushing material is crossed 7 mesh sieves, extracting screen underflow obtains soil improvement agent.
The application process of above-mentioned soil improvement agent: with the mixing with soil of above-mentioned soil improvement agent and continued improvement, described soil improvement agent is 1:15 with the weight ratio of soil to be improved.
Experiment showed, that after improving soil and soil improvement agent mixes, the content of its various effective constituents has all surpassed national second grade soil standard.
Embodiment 3
The present embodiment discloses a kind of soil improvement agent, comprises each component that weight proportion is following:
11 parts of coal gangues;
8 parts of stalks;
2 parts in ground phosphate rock.
Wherein, the weight percent of Vanadium Pentoxide in FLAKES is 35% in the ground phosphate rock.Comprise each component that weight proportion is following: SiO in the coal gangue 2: 55%; Al 2O 3: 18%; Fe 2O 3: 8%; CaO:5%; MgO:1%; Water ratio=13%.Stalk in the present embodiment adopts cotton stalk.The water content of the cotton stalk that adopts in the present embodiment is 10%.
The preparation method of above-mentioned soil improvement agent comprises the steps:
1) cotton stalk is ground into the particle that particle diameter is 5-15mm, coal gangue and ground phosphate rock are crushed to particle diameter<2mm, each component is mixed according to above-mentioned weight proportion;
2) with above-mentioned mixed material 20-30 ℃ of lower slaking 40 days; Under the effect of air, maturing process can shorten stalk and form the organic cycle;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 10%; Drying is the storage and transport for the ease of soil improvement agent, also guarantees the time of releasing of soil improvement agent fertilizer efficiency simultaneously.
4) dried crushing material is crossed 12 mesh sieves, extracting screen underflow obtains soil improvement agent.
The application process of above-mentioned soil improvement agent: with the mixing with soil of above-mentioned soil improvement agent and continued improvement, described soil improvement agent is 1:10 with the weight ratio of soil to be improved.
Experiment showed, that after improving soil and soil improvement agent mixes, the content of its various effective constituents has all surpassed national second grade soil standard.
Embodiment 4
The present embodiment discloses a kind of soil improvement agent, comprises each component that weight proportion is following:
10 parts of coal gangues;
10 parts of stalks;
2 parts in ground phosphate rock.
Wherein, the weight percent of Vanadium Pentoxide in FLAKES is 30% in the ground phosphate rock.Comprise each component that weight proportion is following: SiO in the described coal gangue 2: 62%; Al 2O 3: 26%; Fe 2O 3: 5%; CaO:2%; MgO:1%; Water ratio=4%.Stalk in the present embodiment adopts wheat stalk.The water content of the wheat stalk that adopts in the present embodiment is 10-15%.
The preparation method of above-mentioned soil improvement agent comprises the steps:
1) wheat stalk is ground into the particle that particle diameter is 5-20mm, coal gangue and ground phosphate rock are crushed to particle diameter<2mm, each component is mixed according to above-mentioned weight proportion;
2) with above-mentioned mixed material 20-30 ℃ of lower slaking 35 days; Under the effect of air, maturing process can shorten stalk and form the organic cycle;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 12%; Drying is the storage and transport for the ease of soil improvement agent, also guarantees the time of releasing of soil improvement agent fertilizer efficiency simultaneously;
4) dried crushing material is crossed 10 mesh sieves, extracting screen underflow obtains soil improvement agent.
The application process of above-mentioned soil improvement agent: with the mixing with soil of above-mentioned soil improvement agent and continued improvement, described soil improvement agent is 1:10 with the weight ratio of soil to be improved.
Experiment showed, that after improving soil and soil improvement agent mixes, the content of its various effective constituents has all surpassed national second grade soil standard.
Embodiment 5
The present embodiment discloses a kind of soil improvement agent, comprises each component that weight proportion is following:
6 parts of coal gangues;
16 parts of stalks;
3 parts in ground phosphate rock.
Wherein, the weight percent of Vanadium Pentoxide in FLAKES is 25% in the ground phosphate rock.Comprise each component that weight proportion is following: SiO in the coal gangue 2: 50%; Al 2O 3: 18%; Fe 2O 3: 8%; CaO:2%; MgO:1%; Water ratio=21%.Stalk in the present embodiment adopts maize straw.The water content of the maize straw that adopts in the present embodiment is 13%.
The preparation method of above-mentioned soil improvement agent comprises the steps:
1) corn straw smashing being become particle diameter is the particle of 5-20mm, and coal gangue and ground phosphate rock are crushed to particle diameter<2mm, and each component is mixed according to above-mentioned weight proportion;
2) with above-mentioned mixed material 20-30 ℃ of lower slaking 34 days; Under the effect of air, maturing process can shorten stalk and form the organic cycle;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 11%; Drying is the storage and transport for the ease of soil improvement agent, also guarantees the time of releasing of soil improvement agent fertilizer efficiency simultaneously;
4) dried crushing material is crossed 8 mesh sieves, extracting screen underflow obtains soil improvement agent.
The application process of above-mentioned soil improvement agent: with the mixing with soil of above-mentioned soil improvement agent and continued improvement, described soil improvement agent is 1:5 with the weight ratio of soil to be improved.
Experiment showed, that after improving soil and soil improvement agent mixes, the content of its various effective constituents has all surpassed national second grade soil standard.
Soil improvement agent disclosed by the invention can adopt the application process of existing soil improvement agent in use, such as bottom application, ditch spread, spread manuer in holes etc.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.

Claims (10)

1. a soil improvement agent is characterized in that, comprises each component that weight proportion is following:
Coal gangue 6-12 part;
Stalk 8-16 part;
Ground phosphate rock 0.2-3 part.
2. described soil improvement agent according to claim 1 is characterized in that, comprises each component that weight proportion is following:
Coal gangue 7-11 part;
Stalk 10-14 part;
Ground phosphate rock 0.5-2 part.
3. described soil improvement agent according to claim 1 is characterized in that, the weight percent of Vanadium Pentoxide in FLAKES is 20-35% in the described ground phosphate rock.
4. described soil improvement agent according to claim 1 is characterized in that, comprises each component that weight proportion is following: SiO in the described coal gangue 2: 50~62%; Al 2O 3: 18~26%; Fe 2O 3: 5-8%; CaO:2~5%; MgO:1~3%; Water ratio<30%.
5. described soil improvement agent according to claim 1 is characterized in that, the water content of described stalk is 10-15%.
6. the preparation method of the described soil improvement agent of claim 1-5 any one is characterized in that, comprises the steps:
1) each component is mixed according to weight proportion;
2) with above-mentioned mixed material at 20-30 ℃ of lower slaking 20-40 days;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 10-15%;
4) dried crushing material is sieved, extracting screen underflow obtains soil improvement agent.
7. the preparation method of described soil improvement agent according to claim 6 is characterized in that, comprises the steps:
1) each component is mixed according to weight proportion;
2) with above-mentioned mixed material at 20-30 ℃ of lower slaking 25-35 days;
3) with the material after the slaking 60-80 ℃ lower dry, to water content be 10-15%;
4) dried crushing material is sieved, extracting screen underflow obtains soil improvement agent.
8. the preparation method of described soil improvement agent according to claim 7 is characterized in that, before step 1), it is the particle of 5-20mm that crushed stalk is become particle diameter, and coal gangue and ground phosphate rock are crushed to particle diameter<2mm.
9. the method for soil improvement processing is characterized in that, with the mixing with soil of each described soil improvement agent of claim 1-6 and continued improvement, described soil improvement agent is 1:5-20 with the weight ratio of soil to be improved.
10. the method processed of described soil improvement according to claim 9 is characterized in that, described soil improvement agent is 1:8 with the weight ratio of soil to be improved.
CN201210277844.1A 2012-08-06 2012-08-06 Soil conditioner and preparation method thereof Active CN102875258B (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN104876765A (en) * 2015-05-13 2015-09-02 丽水学院 Soil microbial community improver and preparation method and application thereof
CN105061086A (en) * 2015-08-26 2015-11-18 迪斯科科技集团(宜昌)有限公司 Acid soil conditioner containing biological carbon and preparing method thereof
CN106753401A (en) * 2016-11-24 2017-05-31 贵州环科环境生态研发有限公司 A kind of soil conditioner and preparation method thereof
CN106893595A (en) * 2015-12-20 2017-06-27 衡阳智源农业科技有限公司 A kind of soil conditioner
CN107201233A (en) * 2017-06-23 2017-09-26 合肥市风达农业有限责任公司 A kind of ecological, environmental protective soil conditioner and preparation method thereof
CN108383661A (en) * 2018-05-03 2018-08-10 中国科学技术大学 A kind of soil conditioner and preparation method thereof
CN111117629A (en) * 2019-12-16 2020-05-08 山西大学 Coal gangue porous soil conditioner and preparation method thereof
CN112745170A (en) * 2021-01-14 2021-05-04 安阳安良农业科技有限公司 Environment-friendly soil conditioner with efficient repairing function and preparation method thereof

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CN1368487A (en) * 2001-02-01 2002-09-11 张显军 Formula and process for preparing efficient biological organic (or semi-organic) fertilizer
KR100386693B1 (en) * 2000-12-28 2003-06-02 강양수 The method of soil amendment using recycled molding sand
CN102173917A (en) * 2011-01-06 2011-09-07 四川大学 Preparation method of afforestation matrices for sandstone rock slopes

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KR100386693B1 (en) * 2000-12-28 2003-06-02 강양수 The method of soil amendment using recycled molding sand
CN1368487A (en) * 2001-02-01 2002-09-11 张显军 Formula and process for preparing efficient biological organic (or semi-organic) fertilizer
CN1336104A (en) * 2001-09-19 2002-02-20 中国农业科学院蔬菜花卉研究所 Organic soil-less culture substrate, orgainc solid fertilizer and soil-less cultivation method
CN102173917A (en) * 2011-01-06 2011-09-07 四川大学 Preparation method of afforestation matrices for sandstone rock slopes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104876765A (en) * 2015-05-13 2015-09-02 丽水学院 Soil microbial community improver and preparation method and application thereof
CN104876765B (en) * 2015-05-13 2018-06-12 丽水学院 A kind of soil microbial community modifying agent and preparation method and application
CN105061086A (en) * 2015-08-26 2015-11-18 迪斯科科技集团(宜昌)有限公司 Acid soil conditioner containing biological carbon and preparing method thereof
CN106893595A (en) * 2015-12-20 2017-06-27 衡阳智源农业科技有限公司 A kind of soil conditioner
CN106753401A (en) * 2016-11-24 2017-05-31 贵州环科环境生态研发有限公司 A kind of soil conditioner and preparation method thereof
CN107201233A (en) * 2017-06-23 2017-09-26 合肥市风达农业有限责任公司 A kind of ecological, environmental protective soil conditioner and preparation method thereof
CN108383661A (en) * 2018-05-03 2018-08-10 中国科学技术大学 A kind of soil conditioner and preparation method thereof
CN111117629A (en) * 2019-12-16 2020-05-08 山西大学 Coal gangue porous soil conditioner and preparation method thereof
CN112745170A (en) * 2021-01-14 2021-05-04 安阳安良农业科技有限公司 Environment-friendly soil conditioner with efficient repairing function and preparation method thereof

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