CN107285940A - Salt-soda soil is improved in the method for planting plants using the sludge nutritional media of preparation - Google Patents
Salt-soda soil is improved in the method for planting plants using the sludge nutritional media of preparation Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/02—Manufacture from potassium chloride or sulfate or double or mixed salts thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
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- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
Salt-soda soil is improved in the method for planting plants the present invention relates to the sludge nutritional media based on preparation, belong to Treatment of Sludge and Saline-alkali Field Control technical field, this method is based on the sludge nutritional media prepared, sludge nutritional media is spread fertilizer over the fields in saline and alkaline surface layer first, turn over, site preparation, parallel digging kind planting ditch；Then sludge nutritional media, water-loss reducer and size-reduced plant refuse are well mixed, obtain sludge soil moved in improve the original；Sludge soil moved in improve the original is imposed on into kind of a planting ditch bottom of trench formation soil moved in improve the original layer again, vegetable seeds kind is covered non-woven fabrics, periodically irrigated afterwards and Routine Management in soil moved in improve the original layer, soil moved in improve the original layer top.The problem of this method solves alkaline land soil optimization and Treatment of Sludge, the two is organically combined, while making full use of sludge waste to solve environmental problem, and advantage is provided for agriculture and forestry production.
Description
Technical field
The present invention relates to Treatment of Sludge and Saline-alkali Field Control technical field, in particular it relates to which a kind of utilize the sludge prepared
Nutrient matrix improves salt-soda soil in the method for planting plants.
Background technology
Salinity contained by inside alkaline land soil has influence on the normal growth of crop, various saline-alkali soil be all it is certain from
Formed under the conditions of so, its essence formed is mainly the weight that various ease of solubility salts make horizontal direction and vertical direction on ground
New distribution, so that upper soll layer of the salinity in collection salt area is built up.The content of organic matter of saline-alkali soil is few, soil fertilizer
Power is low, and physicochemical character is poor, and the anions and canons being harmful to crop are more, and crop is difficult to promote seedling.The modification method in general salt-soda soil is such as
Under：(1) natural fencing：Although less input, take very long；(2) physical method is improved：As irrigation and drainage, rinse desalination,
Song Geng, pressure sand etc., although be widely used, but exist that the amount of labour used is big, input cost is high, it is limited to hold time or be limited to water money
A series of problems, such as source is nervous；(3) chemical method is improved：The property in salt-soda soil is improved using some acid salts substances, is promoted
Enter plant root growth, but there is also it is more the problem of, be to be related to multiple industrial chains first, it is impossible to coordinate and implement；Its
Secondary is to cause the pollution for improveing salt-soda soil other forms to aggravate, and the amount of the bisalt added is more, operational hazards；(4) it is raw
Thing modification method：Planting plants, especially halophytes, improved effect are preferable, economical and effective, but need to consider planting technology
The advance of means, that is, select suitable planting plants to can be only achieved preferable effect；(5) vegetal cover method：Plant is covered
Required biomass etc. is especially big, is difficult to solve in energy problem.
Sludge is the solid sediment matter produced by the processing procedure to municipal sewage or industrial wastewater, it be it is a kind of by
The extremely complex heterogeneous body of the compositions such as organic relic, microorganism, inorganic particle, colloid.Although its have quantity big and
The shortcomings of easily degenerating smelly, but be due to also to contain substantial amounts of organic matter in it, therefore, people tend at sludge
Reason, conversion are recycled, and are on the one hand reduced the environmental problem that a large amount of mud dischargings are produced, on the other hand can also be utilized having in it
Effect material contributes for the production and living of the mankind.How sludge is handled, be allowed to form nutritional ingredient abundance and in a balanced way matrix
For improveing alkaline land soil to promote growth and development of plants to be an important research topic.
The content of the invention
In view of the above-mentioned problems, utilizing the sludge nutritional media prepared improvement salt-soda soil it is an object of the invention to provide a kind of
In the method for planting plants, the problem of for solving alkaline land soil optimization and Treatment of Sludge, and the two is organically combined,
While making full use of sludge waste to solve environmental problem, advantage is provided for agriculture and forestry production.
A kind of preparation method of sludge nutritional media, comprises the following steps：
Step 1: taking sludge of the sewage treatment plant through coagulation, it is 2.5%-4.0%'s that its mass fraction is added into sludge
The potassium chloride of sodium citrate, 9%-11% humic acid and 1%-3%, stands 1-2h after stirring, suction filtration top layer moisture, then
Dehydration to moisture content is 75%-80%, obtains pretreating sludge；
Fermentation 5-6d for the first time is carried out Step 2: pretreating sludge is placed in 55-60 DEG C of fermentation tank, first time fermentate is obtained
Material；
Step 3: by first time fermentation materials, sludge and During High-Temperature Composting zymocyte liquid with 10:25:3 volume ratio is mixed,
After stirring, 80-85 DEG C of second of fermentation 4-5d obtains second of fermentation materials；
Step 4: by second fermentation materials, turf and normal temperature compost fermentation bacterium solution with 15:15:2 volume ratio is mixed,
After stirring, 35-38 DEG C of third time fermentation 4-5d obtains third time fermentation materials；
Step 5: third time fermentation materials are dried, crushed, 40 mesh sieves are crossed, sludge nutritional media is obtained.
Further, it is 1 comprising mass ratio in the During High-Temperature Composting zymocyte liquid:2:2:1 thermophilic actinomycete, lactic acid bud
Spore bacillus, damp and hot Bacillus stearothermophilus and saccharomycete.
Further, it is 3 comprising mass ratio in the normal temperature compost fermentation bacterium solution:2:1 nitrogen-fixing rhizobia, rhizopus and
Bacillus subtilis.
The present invention also protects sludge nutritional media prepared by a kind of above method.
In addition, the present invention also protects a kind of above-mentioned sludge nutritional media of utilization to improve salt-soda soil in the method for planting plants,
Comprise the following steps：
Step 1: sludge nutritional media is spread fertilizer over the fields in saline and alkaline surface layer, it is 5-6cm to spread fertilizer over the fields height, is then turned over, ploughed depth is
20-25cm, site preparation, parallel digging kind planting ditch, ditch depth 10-15cm, the spacing of adjacent kind of planting ditch is 20-50cm；
Step 2: by sludge nutritional media, water-loss reducer and size-reduced plant refuse with 10:1:5 volume ratio is mixed,
Sludge soil moved in improve the original is obtained after stirring；
Step 3: sludge soil moved in improve the original is imposed on into kind of a planting ditch bottom of trench formation soil moved in improve the original layer, the height of soil moved in improve the original layer is the 1/3-1/2 of ditch depth, will
Vegetable seeds kind is covered non-woven fabrics, periodically irrigated afterwards and Routine Management in soil moved in improve the original layer, soil moved in improve the original layer top.
Further, the plant refuse is plant defoliation, agricultural crop straw, the dregs of a decoction, schlempe, mushroom residue or furfural dregs
At least one of.
Beneficial effects of the present invention：
1st, in the preparation method of sludge nutritional media of the present invention, sodium citrate, humic acid and potassium chloride progress are added into sludge
Conditioning, sodium citrate therein can promote organic matter dissolution, destroy the network structure of extracellular polymeric so that originally by beam
The enzyme tie up, being hidden in sludge matrix is released, so as to improve sludge hydrolytic efficiency and organic molecule decomposition level, and in addition one
Quantitative humic acid, is sludge fermentation preparatory condition, potassium chloride is on the one hand to improve the potassium content in sludge, for improvement salt-soda soil
Soil provides nutrient ions, and intermolecular conversion is on the other hand participated in during the fermentation, improves transformation efficiency.Secondly, fermentation
Using classification compost fermentation, staged fermentation is carried out under condition of different temperatures, the fermentation character of microorganism is played to the full extent,
Fully fermented using the composition in sludge, further improve fermentation efficiency, increase the quality of sludge nutritional media.Will be through nothing
The sludge nutritional media of evilization processing is applied in alkaline land soil, relaxed that salt-soda soil organic matter is not enough, water loss is serious,
The problems such as acid-base imbalance, solve saline and alkaline soil planting limited types, promote the low phenomenon of seedling rate, realize public welfare and turn
Change；In addition, the sludge soil moved in improve the original that salt-soda soil is used is based on the sludge nutritional media prepared, the sludge nutritional media is different from normal
The compoiste fertilizer or bisalt material used in rule modification method, can form a kind of fertile, resistance to erosion on salt-soda soil
Soil moved in improve the original layer, reduces the loss of nutriment in matrix, has reached the effect turned waste into wealth, while will not cause secondary to environment
Pollution, eliminates the harm of food chain or pollution of waterhead.
2nd, the method for the present invention that soil optimization is carried out using sludge soil moved in improve the original, overcomes saline-alkali wasteland visitor to a certain extent
The technical barrier of soil plantation, improves kind of a shoot survival percent, lifts the soil environment of growth of seedling.In the saline and alkaline of applying sludge soil moved in improve the original
Ground maize planting, company applies 2 years and corn planting can be promoted into normal level, in terms of emergence rate, plant height and single plant yield
Increase, wherein, emergence rate can improve 80%；Relatively control increase 40cm or so in plant height；Empty bar rate has declined, and reduction is about
50%；Increased on single plant yield, highest can improve 30%.After applying sludge soil moved in improve the original, alkaline land soil fertility increases,
Be conducive to proportion of crop planting.Using this kind of method, crop-planting scope can be expanded, land utilization ratio is improved, economize on resources, fitted
Large-scale promotion is closed to use.
Embodiment
Below by specific embodiment the present invention will be further explained explanation.
Embodiment 1
A kind of preparation method of sludge nutritional media, comprises the following steps：
Sludge of the sewage treatment plant through coagulation is taken, sodium citrate, 11% that its mass fraction is 2.5% are added into sludge
Humic acid and 1% potassium chloride, stand 1-2h, suction filtration top layer moisture after stirring, then it is 75%- to be dehydrated to moisture content
80%, obtain pretreating sludge；Pretreating sludge is placed in 60 DEG C of fermentation tanks and carries out fermentation 5d for the first time, first time fermentate is obtained
Material；By first time fermentation materials, sludge and During High-Temperature Composting zymocyte liquid with 10:25:3 volume ratio is mixed, and is stirred
Afterwards, 85 DEG C of second of fermentation 4d, obtain second of fermentation materials；By second fermentation materials, turf and normal temperature compost fermentation bacterium solution
With 15:15:2 volume ratio is mixed, after stirring, 38 DEG C of third time fermentation 4d, obtains third time fermentation materials；By the 3rd
Secondary fermentation materials are dried, crushed, and are crossed 40 mesh sieves, are obtained sludge nutritional media.
Wherein, the preparation of the During High-Temperature Composting zymocyte liquid：By thermophilic actinomycete, lactic acid bacillus, damp and hot fatty bud
Spore bacillus and saccharomycete, which are distinguished, to be cultivated on liquid medium within to logarithmic phase, determines OD600Value, 5000g, 4 DEG C of centrifugation 15min, goes
Supernatant, is resuspended bacterial sediment with physiological saline, adjusts to OD600=4.0 same concentrations, obtain four kinds of bacterium solutions；By four kinds of bacterium solutions with
Volume ratio is 1:2:2:1 ratio is mixed, and During High-Temperature Composting zymocyte liquid is made.
The preparation of the normal temperature compost fermentation bacterium solution：By nitrogen-fixing rhizobia, rhizopus and bacillus subtilis respectively in liquid
Cultivated on body culture medium to logarithmic phase, determine OD600Value, 5000g, 4 DEG C of centrifugation 15min, removes supernatant, bacterium is resuspended with physiological saline
Body is precipitated, and is adjusted to OD600=4.0 same concentrations, obtain three kinds of bacterium solutions；By three kinds of bacterium solutions using volume ratio as 3:2:1 ratio is entered
Row mixing, is made normal temperature compost fermentation bacterium solution.
Embodiment 2
A kind of preparation method of sludge nutritional media, comprises the following steps：
Sludge of the sewage treatment plant through coagulation is taken, sodium citrate, 10% that its mass fraction is 3.0% are added into sludge
Humic acid and 2% potassium chloride, stand 1-2h, suction filtration top layer moisture after stirring, then it is 75%- to be dehydrated to moisture content
80%, obtain pretreating sludge；Pretreating sludge is placed in 58 DEG C of fermentation tanks and carries out fermentation 5.5d for the first time, obtains and ferments for the first time
Material；By first time fermentation materials, sludge and During High-Temperature Composting zymocyte liquid with 10:25:3 volume ratio is mixed, and stirring is equal
After even, 82 DEG C of second of fermentation 4.5d obtain second of fermentation materials；By second fermentation materials, turf and normal temperature compost fermentation
Bacterium solution is with 15:15:2 volume ratio is mixed, after stirring, 36 DEG C of third time fermentation 4.5d, obtains third time fermentation materials；
Third time fermentation materials are dried, crushed, 40 mesh sieves is crossed, obtains sludge nutritional media.
Wherein, the preparation of the During High-Temperature Composting zymocyte liquid：By thermophilic actinomycete, lactic acid bacillus, damp and hot fatty bud
Spore bacillus and saccharomycete, which are distinguished, to be cultivated on liquid medium within to logarithmic phase, determines OD600Value, 5000g, 4 DEG C of centrifugation 15min, goes
Supernatant, is resuspended bacterial sediment with physiological saline, adjusts to OD600=4.0 same concentrations, obtain four kinds of bacterium solutions；By four kinds of bacterium solutions with
Volume ratio is 1:2:2:1 ratio is mixed, and During High-Temperature Composting zymocyte liquid is made.
The preparation of the normal temperature compost fermentation bacterium solution：By nitrogen-fixing rhizobia, rhizopus and bacillus subtilis respectively in liquid
Cultivated on body culture medium to logarithmic phase, determine OD600Value, 5000g, 4 DEG C of centrifugation 15min, removes supernatant, bacterium is resuspended with physiological saline
Body is precipitated, and is adjusted to OD600=4.0 same concentrations, obtain three kinds of bacterium solutions；By three kinds of bacterium solutions using volume ratio as 3:2:1 ratio is entered
Row mixing, is made normal temperature compost fermentation bacterium solution.
Embodiment 3
A kind of preparation method of sludge nutritional media, comprises the following steps：
Sludge of the sewage treatment plant through coagulation is taken, sodium citrate, 9% that its mass fraction is 4.0% are added into sludge
Humic acid and 3% potassium chloride, stand 1-2h, suction filtration top layer moisture after stirring, then it is 75%- to be dehydrated to moisture content
80%, obtain pretreating sludge；Pretreating sludge is placed in 55 DEG C of fermentation tanks and carries out fermentation 6d for the first time, first time fermentate is obtained
Material；By first time fermentation materials, sludge and During High-Temperature Composting zymocyte liquid with 10:25:3 volume ratio is mixed, and is stirred
Afterwards, 80 DEG C of second of fermentation 5d, obtain second of fermentation materials；By second fermentation materials, turf and normal temperature compost fermentation bacterium solution
With 15:15:2 volume ratio is mixed, after stirring, 35 DEG C of third time fermentation 5d, obtains third time fermentation materials；By the 3rd
Secondary fermentation materials are dried, crushed, and are crossed 40 mesh sieves, are obtained sludge nutritional media.
Wherein, the preparation of the During High-Temperature Composting zymocyte liquid：By thermophilic actinomycete, lactic acid bacillus, damp and hot fatty bud
Spore bacillus and saccharomycete, which are distinguished, to be cultivated on liquid medium within to logarithmic phase, determines OD600Value, 5000g, 4 DEG C of centrifugation 15min, goes
Supernatant, is resuspended bacterial sediment with physiological saline, adjusts to OD600=4.0 same concentrations, obtain four kinds of bacterium solutions；By four kinds of bacterium solutions with
Volume ratio is 1:2:2:1 ratio is mixed, and During High-Temperature Composting zymocyte liquid is made.
The preparation of the normal temperature compost fermentation bacterium solution：By nitrogen-fixing rhizobia, rhizopus and bacillus subtilis respectively in liquid
Cultivated on body culture medium to logarithmic phase, determine OD600Value, 5000g, 4 DEG C of centrifugation 15min, removes supernatant, bacterium is resuspended with physiological saline
Body is precipitated, and is adjusted to OD600=4.0 same concentrations, obtain three kinds of bacterium solutions；By three kinds of bacterium solutions using volume ratio as 3:2:1 ratio is entered
Row mixing, is made normal temperature compost fermentation bacterium solution.
Performance indications to the embodiment 1-3 sludge nutritional medias prepared are evaluated：
1st, heavy metal index
Heavy metal full dose is determined：Weigh sludge battalion prepared by embodiments 1 of the 0.5-1g (being accurate to 0.0001g) through 105 DEG C of drying
Support in matrix and polytetrafluoroethylene (PTFE) crucible, plus 5-7 drops deionized water moistening, plus 10mL hydrofluoric acid, 5mL 1:1 perchloric acid and nitre
Sour mixed liquor, capping low temperature (being less than 100 DEG C) digestion 1-1.5h uncaps and rises to (150 DEG C or so) digestion 2-3h of middle temperature, continues to rise
Temperature (being less than 250 DEG C) digestion to perchloric acid emits dense white cigarette, and content is in thick, then adds 5mL hydrofluoric acid, 5mL 1:1
Perchloric acid and nitric acid mixed liquor, are digested to not smokeing clogging substantially, and the capping of 5mL 2mol/L hydrochloric acid is added while hot and dissolves by heating residue,
And filter into 25mL volumetric flasks, cooling, constant volume determine Cu, Cr, Pb, Cd, As content of beary metal.Conventional soil is determined simultaneously
In heavy metal full dose content be used as control.As a result it is as shown in table 1 below.
Bio-available Zn concentration is determined：The sludge nutritional media for weighing the preparation of 5g (being accurate to 0.0001g) embodiment 1 is placed on
In 100mL conical flasks, DTPA digestion agent 25mL are added, are placed at room temperature on water bath chader, under the conditions of 180rpm/min
2h is extracted, takes suspension to centrifuge 30min, filtering, filtrate is diluted to after debita spissitudo determines Cu, Cr, Pb, Cd, As weight with ICP-OES
Tenor.The heavy metal bio-available Zn concentration determined simultaneously in conventional soil is used as control.As a result it is as shown in table 1 below.
Table 1：Content of beary metal table (n=10) in sludge nutritional media
From upper table 1, pass through weight in the sludge nutritional media prepared to embodiment 1 of the present invention and the conventional soil of control
The contrast of tenor finds that Cu, Cr, Pb, Cd, As in sludge nutritional media prepared by preparation method of the present invention are with much money
Category content meets GB15618-1995 standard of soil environment quality, and its full dose content is below weighing accordingly in conventional soil
Metal full dose content, and bio-available Zn concentration is then above in conventional soil corresponding heavy metal bio-available Zn concentration.Illustrate through this hair
Bright described preparation method, can effectively prevent heavy metal as difficulty soluble salt and precipitate, reduce heavy metal in sludge nutritional media
Accumulation, reduce pollution and promote growing for long-term cropping；On the other hand, heavy metal element is improved with water-soluble state
With ion-exchange state in the existence rate of sludge nutritional media, the metabolic activity of microorganism in matrix and crop effectively have impact on
Grow.
2nd, emergence rate and crop growth conditions are calmed down
Sludge nutritional media prepared by embodiment is spread fertilizer over the fields in saline and alkaline surface layer, and it is 5-6cm to spread fertilizer over the fields height, then turns over, turns over
Depth is 20-25cm, site preparation, parallel digging kind planting ditch, ditch depth 10-15cm, and the spacing of adjacent kind of planting ditch is 20-50cm；Collect and plant
Thing fallen leaves, agricultural crop straw, the dregs of a decoction, schlempe, mushroom residue or furfural dregs, after being well mixed, crush, cross 40 mesh sieves, obtain plant and give up
Gurry；Again by sludge nutritional media, water-loss reducer and plant refuse with 10:1:5 volume ratio is mixed, after stirring
Sludge soil moved in improve the original；Sludge soil moved in improve the original is imposed on into kind of a planting ditch bottom of trench formation soil moved in improve the original layer, the height of soil moved in improve the original layer is the 1/3-1/2 of ditch depth, by jade
Rice seed kind is covered non-woven fabrics, periodically irrigated afterwards and Routine Management in soil moved in improve the original layer, rational close planting, soil moved in improve the original layer top.Sowing
Emergence rate is counted after 25 days.Meanwhile, do not apply in the conventional Organic sludge manure of administration and maize planting on the salt-soda soil of any matrix
1 and control 2 are compared respectively.As a result it is as shown in table 2 below.
Elite seed is wanted before corn seeding.Select and remain full seed, the seed that uniform in size, color is vivid, germination percentage is high, go
Except not plump, rotten, mould and granule.Seed Jing Guo grain-by-grain seed selection is shone 1~2 day, and dressing seed or coating, coating agent can select 20% good fortune
Gram suspending agent or from the corn seed coating agent of 5.4% pyrrole-penta to control seedling stage small brown rice planthopper, aphid, rough dwarf disease or banded sclerotial blight etc..
Table 2：Influence of the applying sludge soil moved in improve the original to corn planting on salt-soda soil
| Source | Emergence rate (%) | Plant height (cm) | Empty bar rate (%) | Single pearl yield (g) |
| Embodiment 1 | 93.2 | 192 | 23.4 | 130.45 |
| Embodiment 2 | 87.5 | 197 | 16.7 | 124.28 |
| Embodiment 3 | 91.6 | 183 | 13.8 | 113.65 |
| Control 1 | 63.2 | 168 | 25.7 | 115.4 |
| Control 2 | 55.4 | 157 | 37.8 | 100.27 |
From upper table 2, on salt-soda soil after applying sludge soil moved in improve the original, maize planting is in terms of emergence rate, plant height and single plant yield
Increase, wherein, emergence rate can improve 80%；Relatively control increase 40cm or so in plant height；Empty bar rate has declined, reduction
About 50%；Increased on single plant yield, highest can improve 30%.After applying sludge soil moved in improve the original, the corn kernel of plantation is full, even
Apply 2 years, normal level is can reach in yield.Illustrate after applying sludge soil moved in improve the original, alkaline land soil fertility increases, and is conducive to
Corn planting.
Claims (6)
1. a kind of preparation method of sludge nutritional media, it is characterised in that：Comprise the following steps：
Step 1: taking sludge of the sewage treatment plant through coagulation, the lemon that its mass fraction is 2.5%-4.0% is added into sludge
Lemon acid sodium, 9%-11% humic acid and 1%-3% potassium chloride, stand 1-2h, suction filtration top layer moisture after stirring, then be dehydrated to
Moisture content is 75%-80%, obtains pretreating sludge；
Fermentation 5-6d for the first time is carried out Step 2: pretreating sludge is placed in 55-60 DEG C of fermentation tank, first time fermentate is obtained
Material；
Step 3: by first time fermentation materials, sludge and During High-Temperature Composting zymocyte liquid with 10:25:3 volume ratio is mixed,
After stirring, 80-85 DEG C of second of fermentation 4-5d obtains second of fermentation materials；
Step 4: by second fermentation materials, turf and normal temperature compost fermentation bacterium solution with 15:15:2 volume ratio is mixed,
After stirring, 35-38 DEG C of third time fermentation 4-5d obtains third time fermentation materials；
Step 5: third time fermentation materials are dried, crushed, 40 mesh sieves are crossed, sludge nutritional media is obtained.
2. preparation method as claimed in claim 1, it is characterised in that：It is comprising mass ratio in the During High-Temperature Composting composite bacteria liquid
1:2:2:1 thermophilic actinomycete, lactic acid bacillus, damp and hot Bacillus stearothermophilus and saccharomycete.
3. preparation method as claimed in claim 1, it is characterised in that：It is comprising mass ratio in the normal temperature compost composite bacteria liquid
3:2:1 nitrogen-fixing rhizobia, rhizopus and bacillus subtilis.
4. it is a kind of such as the sludge nutritional media of claim 1-3 any one methods described preparations.
5. a kind of improve salt-soda soil in the method for planting plants based on sludge nutritional media described in claim 4, it is characterised in that：
Comprise the following steps：
Step 1: sludge nutritional media is spread fertilizer over the fields in saline and alkaline surface layer, it is 5-6cm to spread fertilizer over the fields height, is then turned over, ploughed depth is
20-25cm, site preparation, parallel digging kind planting ditch, ditch depth 10-15cm, the spacing of adjacent kind of planting ditch is 20-50cm；
Step 2: by sludge nutritional media, water-loss reducer and size-reduced plant refuse with 10:1:5 volume ratio is mixed,
Sludge soil moved in improve the original is obtained after stirring；
Step 3: sludge soil moved in improve the original is imposed on into kind of a planting ditch bottom of trench formation soil moved in improve the original layer, the height of soil moved in improve the original layer is the 1/3-1/2 of ditch depth, will
Vegetable seeds kind is covered non-woven fabrics, periodically irrigated afterwards and Routine Management in soil moved in improve the original layer, soil moved in improve the original layer top.
6. method as claimed in claim 5, it is characterised in that：The plant refuse is plant defoliation, agricultural crop straw, medicine
At least one of slag, schlempe, mushroom residue or furfural dregs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710744079.2A CN107285940A (en) | 2017-08-25 | 2017-08-25 | Salt-soda soil is improved in the method for planting plants using the sludge nutritional media of preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710744079.2A CN107285940A (en) | 2017-08-25 | 2017-08-25 | Salt-soda soil is improved in the method for planting plants using the sludge nutritional media of preparation |
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| CN113812327A (en) * | 2021-09-15 | 2021-12-21 | 江西芳芽农业发展有限公司 | Vegetable seedling raising substrate obtained based on waste utilization and preparation method thereof |
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