CN110054531B - Conditioner for dry farmland soil of soda saline-alkali soil and preparation method thereof - Google Patents
Conditioner for dry farmland soil of soda saline-alkali soil and preparation method thereof Download PDFInfo
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- CN110054531B CN110054531B CN201910480025.9A CN201910480025A CN110054531B CN 110054531 B CN110054531 B CN 110054531B CN 201910480025 A CN201910480025 A CN 201910480025A CN 110054531 B CN110054531 B CN 110054531B
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
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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
- C05G3/80—Soil conditioners
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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Abstract
The invention discloses a modifier for dry farmland soil of soda saline-alkali soil and a preparation method thereof, wherein the modifier for dry farmland soil of soda saline-alkali soil comprises the following raw materials: a blocking agent, an acidity regulator, an organic fertilizer and a microbial agent. The invention has the beneficial effects that: according to the conditioner for the dry land soil of the soda saline-alkali land, microorganisms and quasi-nano materials are selected as raw materials of the conditioner, an ecological improvement mechanism of a halophilic alkali-resistant fungus flora on the soil is exerted efficiently, and the problems that most beneficial filamentous fungi are difficult to survive in the saline-alkali land soil and the soil is seriously lack of fungi are solved through the integration effect of the halophilic alkali-resistant aspergillus flora, the nano quasi-nano inert physical material, straws and other soil organic residues, so that the soil texture is improved, the soil organic nutrients are increased, the soil activity is activated, the soil ecology is repaired, the aims of accelerating the curing of a plough layer, inhibiting the saline-alkali repetition and radically treating the saline-alkali land are fulfilled finally.
Description
Technical Field
The invention relates to the technical field of soil improvement, in particular to an improver for dry farmland soil of soda saline-alkali soil and a preparation method thereof.
Background
The alkaline land with more than 9900 million hectares in China exists, most of the alkaline earth and the alkaline soil in China are related to the accumulation of carbonate in the soil, so the alkalization degree is generally high, and plants in serious saline-alkaline soil regions can hardly survive. Soda saline-alkali soil is a typical agricultural obstacle soil, the salt content of the soil is mainly sodium carbonate and sodium bicarbonate, the pH value is as high as 8.5, a serious area exceeds 10.5, soil particles are dispersed in a soil solution due to a large amount of water-soluble sodium ions in the soil, the physical properties of the soil are deteriorated, particularly, an alkalized precipitation layer is not permeable to water, the infiltration of water is influenced, the pH value of the soil is remarkably increased after the sodium ions and the carbonate are hydrolyzed, so that a plurality of nutrient elements in the soil are reduced in solubility and become an invalid state which cannot be absorbed by crops, the seedling emergence of planted crops is difficult, the growth is inhibited, and the normal growth yield is difficult to obtain without improvement. Therefore, how to improve the soda dry land is the primary problem to be solved in agricultural production.
The saline-alkali soil can become a precious cultivated land resource after being reformed, so the saline-alkali soil also becomes a potential precious reserve land resource in China. The traditional saline-alkali soil treatment mainly comprises hydraulic engineering, the purpose of reducing soil salinity is achieved through irrigation and drainage water washing, the salinization area is often a fresh water resource deficient area and is limited by water resources, the texture of soda saline-alkali soil is sticky and heavy, the effect of washing salt with water is not ideal, physical measures are mainly soil-loving methods, namely, aeolian sandy soil is selected to replace or rebuild surface soil, the method is quick in effect, but the engineering is huge, the soil source is scarce, the cost is too high, and the implementation difficulty is large. Although the biological measures are one of the most economic, effective and sustainable methods in the saline-alkali soil improvement method, the saline-alkali tolerant plants, the salt-tolerant green manure crops, the microbial fertilizers and the like can be selected for planting, the investment is low, the economic benefit is high, the requirement on the biological applicability of the biological measures is high, and the slow effect is also low.
Disclosure of Invention
The invention aims to provide a modifier capable of thoroughly solving the problem of soda saline-alkali soil dry land soil, and radically solving the problems that soil clay particles in the soda dry land soil are dispersed when meeting water, so that soil pores are blocked, and the soil is permeable and difficult to seep.
The modifier for the dry land soil of the soda saline-alkali soil comprises the following raw materials in parts by weight: 60-80 parts of blocking agent, 5-6 parts of acidity regulator, 20-30 parts of organic fertilizer and 0.01-0.03 part of microbial agent.
Further, the blocking agent consists of inorganic nanomaterials and fillers: the inorganic nano material is fly ash, the filler is zeolite powder, and the weight ratio of the inorganic nano material to the filler is (2-3): 5.
further, the acidity regulator consists of oxalic acid and ammonium sulfate, and the weight ratio of the oxalic acid to the ammonium sulfate is as follows: 5-6: 1.
further, the organic fertilizer consists of humic acid and fulvic acid, and the weight ratio of the humic acid to the fulvic acid is 5-6: 1.
further, the microorganisms contained in the microbial agent include extreme halophiles and bacillus; the total viable bacteria amount of the microbial inoculum is more than 1.0 multiplied by 108cfu/g。
Further, the extreme halophilic bacteria are aspergillus terreus strains, and the bacillus is bacillus licheniformis and bacillus laterosporus.
Fly ash is fine ash collected from flue gas generated after coal combustion, and is main solid waste discharged from a coal-fired power plant. The fly ash is an artificial pozzolanic mixed material which has little or no hydraulic gelling property, but can react with calcium hydroxide or other alkaline earth metal hydroxides at normal temperature, particularly under the condition of hydrothermal treatment (steam curing) to generate a compound with hydraulic gelling property when being in the form of powder and water, so that the fly ash becomes a material with increased strength and durability. The fly ash in the invention is an inorganic nano material, and is used together with zeolite powder as a blocking agent.
The zeolite powder is prepared by grinding natural zeolite rock and has light green and white color. As the modifier, 50kg of zeolite powder (200 meshes) is used in the water depth of 1 m per mu, so that 95 percent of ammonia nitrogen in water can be removed, the water quality can be purified, and the water transfer phenomenon can be relieved. The zeolite powder with the particle size of 5.0 percent (150 meshes) is added into the grass carp feed, so that the survival rate of the grass carp is improved by 14.0 percent, the relative growth rate is improved by 10.8 percent, the feed coefficient is reduced by 0.28, the intestinal protease activity of the grass carp is improved by 27.0 percent, and the activity of the liver pancreatic protease is not influenced. The zeolite has various basic conditions of being used as a carrier and a diluent of an additive premix, has neutral pH of 7-7.5, contains only 3.4-3.9% of water, is not easy to be wetted, can adsorb the water in the zeolite and is mixed with inorganic salt trace components containing crystal water, and improves the flowability of the feed.
The acid regulator is an artificially synthesized organic compound with plant natural hormone activity, and substances with the functions of regulating and controlling the growth and development of plants comprise auxin, gibberellin, ethylene, cytokinin, abscisic acid, brassinolide and the like, wherein the brassinolide is the latest endogenous hormone which promotes the high yield and the high efficiency of the plants internationally and is also a novel plant growth regulator which has the most vitality and activity in the development of high-yield, high-quality and high-efficiency agriculture and ecological agriculture of China. The acid regulator is used in proper amount, and the amount cannot be increased or mixed freely.
Oxalic acid, is a metabolite of organisms, is widely distributed in plants, animals and fungi, and performs different functions in different organisms. Oxalate has strong coordination effect and is another metal chelating agent in plant-derived food. Can react with alkali, and can carry out esterification, acyl halogenation and amidation reactions. Reduction may also occur, and decarboxylation may occur upon heating. Anhydrous oxalic acid is hygroscopic. Oxalic acid can form water soluble complexes with many metals.
Ammonium sulfate, colorless crystals or white particles. It is mainly used as fertilizer and is suitable for various soils and crops. Heating to 513 deg.C to decompose ammonia gas, nitrogen gas, sulfur dioxide and water. Ammonia gas is released when the ammonia gas reacts with alkalis. Reacting with barium chloride solution to generate barium sulfate precipitate. The protein may also be salted out. It is used in common soil and crop, and can promote the growth of branches and leaves, raise fruit quality and yield, strengthen the resistance of crop to disaster, and may be used as base fertilizer, top dressing and seed fertilizer.
The organic fertilizer contains many nutrient elements in organic state, and is difficult to be directly utilized by crops, and through the action of microorganisms, various nutrient elements are slowly released, and the nutrients are continuously supplied to the crops.
Humic acid is a macromolecular organic substance widely existing in nature, is a complex organic substance formed by animals and plants through long-term physical, chemical and biological actions, contains humus in water body bottom mud, soil and the like, has a complex chemical structure, and is widely applied to various fields of agriculture, forestry, pasture, petroleum, chemical industry, building materials, medical sanitation, environmental protection and the like. In agriculture, humic acid fertilizer prepared by combining nitrogen, phosphorus, potassium and other elements has the functions of fertilizer synergism, soil improvement, crop growth stimulation, agricultural product quality improvement and the like; the nitro humic acid can be used as an acid regulator for rice seedling raising; the humic acid magnesium, the humic acid zinc and the humic acid urea iron respectively have good effects on supplementing soil magnesium deficiency, corn zinc deficiency and fruit tree iron deficiency; the humic acid is mixed with the pesticides such as the phytocide, the atrazine and the like, so that the pesticide effect can be improved, and the residual toxicity can be inhibited.
The fulvic acid is a pure natural mineral active potassium element fertilizer, and the fulvic acid contains multiple nutrient components such as trace elements, rare earth elements, plant growth regulators, virus inhibitors and the like, so that the nutrients are more sufficient and the supply is more reasonable, thereby avoiding various physiological diseases of crops caused by the lack of elements, ensuring that the plant types of the crops are more vigorous, the leaf color is more dark green, and the lodging resistance is stronger. The potassium fulvate can supplement nutrients lost in soil in time, so that the soil is activated, the vitality is realized, the continuous cropping disease caused by excessive absorption of nutrients in the soil is reduced, the product can completely replace potassium sulfate or potassium chloride and potassium magnesium sulfate with the same content, and the product is natural and environment-friendly.
The cell wall of the extreme halophiles consists of glycoproteins rich in acidic amino acids, the integrity of this cell wall structure is maintained by ionic bonds, and high Na + concentrations are necessary for binding between its cell wall protein subunits to maintain the integrity of the cell structure. When the high-salt environment is changed to the low-salt environment, on one hand, cell wall proteins are depolymerized into protein monomers, so that the cell walls are not complete; on the other hand, the balance of the ion concentration inside and outside the cell is broken, the cell absorbs water and swells, the cell wall is finally broken, and the thalli are completely autolyzed. The aspergillus terreus strain adopted in the embodiment of the invention is specifically aspergillus terreus JYJ-5 strain which is preserved in China general microbiological culture Collection center of China Committee for culture Collection of microorganisms with the preservation number of CGMCC 15368. The organic acid-base compound fertilizer has the characteristics of salt resistance and alkali resistance, can grow well in a sodium salt environment and an alkaline environment for a long time, can grow well in a high-salt condition with the sodium salt concentration of 5-15% (g/ml) and an alkaline condition with the pH value of 7-12, can grow well in an environment with the sodium salt concentration of 5-15% (g/ml) for a long time, can secrete organic acid, and can be used for reforming the saline-alkali soil in the sodium salt environment. The inventor collects a sample by using a five-point sampling method, takes soil in a depth range of 30cm of a soil plough layer, and puts the soil into a sterilized glass bottle to be brought back to a laboratory for later use. The diluted and clarified soil supernatant is coated on a potato glucose agar (PDA) culture medium added with NaCl to 150.0g/L by adopting a dilution coating method, the mixture is cultured for 4 days under the condition that the pH value is 10, and a salt and alkali resistant fungus strain aspergillus floccosum JYJ-5 is separated through 3 rounds of screening, and the strain is applied for patent.
Bacillus licheniformis and Bacillus laterosporus, Bacillus licheniformis BL06, purchase in China general microbiological culture Collection center of Committee for culture Collection of microorganisms, the preservation number of the strain is CGMCC NO.13462, can promote plant growth;
the bacillus laterosporus is purchased from the common microorganism center of China Committee for culture Collection of microorganisms, the preservation number of the strain is CGMCC NO.1755, and the bacillus laterosporus can be used as a microbial fertilizer to improve the resistance of crops and has obvious resistance to various viruses, and can effectively improve the soil micro-ecological environment and increase the content of soil humus when entering the soil.
Further, the dosage of the modifying agent for the soda upland field is as follows: 4-8 tons per hectare.
The preparation method of the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
(1) preparing a blocking agent, and mixing and stirring raw materials contained in the blocking agent uniformly to obtain the blocking agent;
(2) mixing and stirring the acid regulator and the organic fertilizer uniformly to obtain a mixed material; adding a blocking agent into the mixture, stirring and mixing for reaction, and compounding and granulating after the reaction is finished to obtain granules;
(3) and (3) adding a microbial agent into the granules obtained in the step (2), and uniformly mixing to obtain the modifier for the dry farmland soil of the soda saline-alkali soil.
Further, the preparation method of the microbial agent comprises the following steps: preparing culture medium, regulating pH to 7.0-8.0, inoculating microorganism, and culturing for 5-7 days to obtain microbial agent.
The culture medium is as follows: the beef extract agar culture medium comprises 0.3 part of beef extract, 1 part of peptone, 0.5 part of sodium chloride, 1 part of agar and 100 parts of water.
Further, in the step (2), the acid regulator and the organic fertilizer are stirred for 40-60min and uniformly mixed at the room temperature of 25-30 ℃; adding a blocking agent into the mixed material at the room temperature of 25-30 ℃ while stirring, reacting for 2-3h, and performing compound granulation to obtain granules with the particle size of 3-5 mm.
The invention has the beneficial effects that: according to the modifier for the soil in the dry farmland of soda saline-alkali land, microorganisms and quasi-nano materials are selected as raw materials of the modifier, the ecological modification mechanism of the halophilic alkali-resistant fungus flora of the microorganisms to the soil is efficiently exerted, and the problems that most beneficial filamentous fungi are difficult to survive in the soil of the saline-alkali land and the soil of the saline-alkali land is seriously lack of the fungi are solved through the integration effect of the halophilic alkali-resistant aspergillus flora, the nano quasi-nano inert physical material, the straw and other soil organic residues. Thereby improving the soil texture, increasing the organic nutrients of the soil, activating the soil vitality and restoring the soil ecology. Finally, the aims of accelerating the curing of the plough layer, inhibiting the saline-alkali repetition and radically treating the saline-alkali soil are achieved.
After the soda dry land is improved by the modifier aiming at the dry land soil of the soda saline-alkali soil, the original microbial community of the soil is activated, the vitality of the soil is recovered, and the condition that the dry land does not return to saline and alkaline in 10 years can be realized; the modifier for the dry farmland soil of the soda saline-alkali soil has the advantages of low raw material cost, simple preparation method, convenient use and obvious effect, and is suitable for large-scale production.
Detailed Description
Example one
The modifier for the dry land soil of the soda saline-alkali soil comprises the following raw materials in parts by weight: 60kg of blocking agent, 6kg of acidity regulator, 30kg of organic fertilizer and 0.03kg of microbial agent.
The preparation method of the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
(1) preparing a blocking agent, and mixing and stirring raw materials contained in the blocking agent uniformly to obtain the blocking agent;
(2) mixing and stirring the acid regulator and the organic fertilizer uniformly to obtain a mixed material; adding a blocking agent into the mixture, stirring and mixing for reaction, and compounding and granulating after the reaction is finished to obtain granules;
(3) and (3) adding a microbial agent into the granules obtained in the step (2), and uniformly mixing to obtain the modifier for the dry farmland soil of the soda saline-alkali soil.
Example two
The modifier for the dry land soil of the soda saline-alkali soil comprises the following raw materials in parts by weight: 60kg of blocking agent, 5kg of acidity regulator, 20kg of organic fertilizer and 0.01kg of microbial agent;
the blocking agent consists of inorganic nano materials and fillers;
the acidity regulator consists of oxalic acid and ammonium sulfate;
the organic fertilizer consists of humic acid and fulvic acid;
the microorganisms contained in the microbial agent comprise extreme halophilic bacteria and bacillus; the extreme halophilic bacteria are aspergillus terreus strains, and the bacillus is bacillus licheniformis and bacillus laterosporus; the total viable bacteria amount of the microbial inoculum is more than 1.0 multiplied by 108cfu/g。
The preparation method of the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
(1) preparing a blocking agent, and mixing and stirring raw materials contained in the blocking agent uniformly to obtain the blocking agent;
(2) stirring the acid regulator and the organic fertilizer at the room temperature of 26 ℃ for 40min, and uniformly stirring to obtain a mixed material; adding a blocking agent into the mixture, stirring and mixing the mixture for reaction for 3 hours at the room temperature of 26 ℃, and compounding and granulating the mixture after the reaction is finished to obtain granules;
(3) adding a microbial inoculum into the granules obtained in the step (2), and uniformly mixing to obtain the modifier for the dry farmland soil of the soda saline-alkali soil; the preparation method of the microbial agent comprises the following steps: preparing a culture medium, adjusting the pH to 7.0, inoculating microorganisms, and culturing for 7 days to form a microbial agent; and the dosage of the modifier for the soda upland field is as follows: 0.3 ton per mu.
EXAMPLE III
The modifier for the dry land soil of the soda saline-alkali soil comprises the following raw materials in parts by weight: 65kg of blocking agent, 5.5kg of acidity regulator, 25kg of organic fertilizer and 0.02kg of microbial agent;
the blocking agent consists of inorganic nano materials and fillers; as a preferable scheme, the inorganic nano material is fly ash, the filler is zeolite powder, and the weight ratio of the inorganic nano material to the filler is 2: 5.
the acidity regulator consists of oxalic acid and ammonium sulfate; and the weight ratio of the oxalic acid to the ammonium sulfate is as follows: 5: 1;
the organic fertilizer consists of humic acid and fulvic acid; and the weight ratio of the humic acid to the fulvic acid is 5: 1;
the microorganisms contained in the microbial agent comprise extreme halophilic bacteria and bacillus; the extreme halophilic bacteria are aspergillus terreus strains, and the bacillus is bacillus licheniformis and bacillus laterosporus; the total viable bacteria amount of the microbial inoculum is more than 1.0 multiplied by 108cfu/g。
The preparation method of the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
(1) preparing a blocking agent, and mixing and stirring raw materials contained in the blocking agent uniformly to obtain the blocking agent;
(2) stirring the acid regulator and the organic fertilizer at room temperature of 25 ℃ for 50min, and uniformly stirring to obtain a mixed material; adding a blocking agent into the mixture, stirring and mixing the mixture for reaction for 3 hours at the room temperature of 25 ℃, and compounding and granulating the mixture after the reaction is finished to obtain granules;
(3) adding a microbial inoculum into the granules obtained in the step (2), and uniformly mixing to obtain the modifier for the dry farmland soil of the soda saline-alkali soil; the preparation method of the microbial agent comprises the following steps: preparing a culture medium, adjusting the pH to 7.5, inoculating microorganisms, and culturing for 6 days to form a microbial agent; and the dosage of the modifier for the soda upland field is as follows: 0.4 ton/mu.
Example four
The modifier for the dry land soil of the soda saline-alkali soil comprises the following raw materials in parts by weight: 75kg of blocking agent, 5.8kg of acidity regulator, 28kg of organic fertilizer and 0.02kg of microbial agent;
the blocking agent consists of inorganic nano materials and fillers; as a preferable scheme, the inorganic nano material is fly ash, the filler is zeolite powder, and the weight ratio of the inorganic nano material to the filler is 2.5: 5.
the acidity regulator consists of oxalic acid and ammonium sulfate; and the weight ratio of the oxalic acid to the ammonium sulfate is as follows: 5.6: 1;
the organic fertilizer consists of humic acid and fulvic acid; and the weight ratio of the humic acid to the fulvic acid is 5.6: 1;
the microorganisms contained in the microbial agent comprise extreme halophilic bacteria and bacillus; the extreme halophilic bacteria are aspergillus terreus strains, and the bacillus is bacillus licheniformis and bacillus laterosporus; the total viable bacteria amount of the microbial inoculum is more than 1.0 multiplied by 108cfu/g。
The preparation method of the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
(1) preparing a blocking agent, and mixing and stirring raw materials contained in the blocking agent uniformly to obtain the blocking agent;
(2) stirring the acid regulator and the organic fertilizer for 40min at the stirring temperature of 30 ℃ to obtain a mixed material; adding a blocking agent into the mixture, stirring and mixing the mixture for reaction for 2 hours at the stirring temperature of 30 ℃, and compounding and granulating the mixture after the reaction is finished to obtain granules;
(3) adding a microbial inoculum into the granules obtained in the step (2), and uniformly mixing to obtain the modifier for the dry farmland soil of the soda saline-alkali soil; the preparation method of the microbial agent comprises the following steps: preparing a culture medium, adjusting the pH value to 7, inoculating microorganisms, and culturing for 7 days to form a microbial agent: and the dosage of the modifier for the soda upland field is as follows: 0.5 ton per mu.
EXAMPLE five
The modifier for the dry land soil of the soda saline-alkali soil comprises the following raw materials in parts by weight: 80kg of blocking agent, 6kg of acidity regulator, 30kg of organic fertilizer and 0.03kg of microbial agent;
the blocking agent consists of inorganic nano materials and fillers; as a preferable scheme, the inorganic nano material is fly ash, the filler is zeolite powder, and the weight ratio of the inorganic nano material to the filler is 3: 5.
the acidity regulator consists of oxalic acid and ammonium sulfate; and the weight ratio of the oxalic acid to the ammonium sulfate is as follows: 6: 1;
the organic fertilizer consists of humic acid and fulvic acid; and the weight ratio of the humic acid to the fulvic acid is 6: 1;
the microorganisms contained in the microbial agent comprise extreme halophilic bacteria and bacillus; the extreme halophilic bacteria are aspergillus terreus strains, and the bacillus is bacillus licheniformis and bacillus laterosporus; the total viable bacteria amount of the microbial inoculum is more than 1.0 multiplied by 108cfu/g。
The preparation method of the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
(1) preparing a blocking agent, and mixing and stirring raw materials contained in the blocking agent uniformly to obtain the blocking agent;
(2) stirring the acid regulator and the organic fertilizer for 60min at the stirring temperature of 28 ℃ to obtain a mixed material; adding a blocking agent into the mixture, stirring and mixing for reaction for 3 hours at the stirring temperature of 28 ℃, and compounding and granulating after the reaction is finished to obtain granules;
(3) adding a microbial inoculum into the granules obtained in the step (2), and uniformly mixing to obtain the modifier for the dry farmland soil of the soda saline-alkali soil; the preparation method of the microbial agent comprises the following steps: preparing a culture medium, adjusting the pH to 7.0, inoculating microorganisms, and culturing for 7 days to form a microbial agent; and the dosage of the modifier for the soda upland field is as follows: 0.45 ton per mu.
The specific implementation case is as follows:
land for test: the land for the test is soda dry land of Longwangxiang county of agricultural and security province of Jilin;
the test method comprises the following steps: randomly selecting 10 soil samples of the soda upland field (marking the selected land) in 4 months in 2008, and detecting the salt content, the pH value and the organic matter content in soil of the selected soil samples;
ploughing a soda dry land of the rural and rural county, Longwangxiang, Jilin province in 04 months in 2009, leveling the dry land, wherein the ploughing depth can be 10-20 cm, the height difference in the same land is not more than 10cm after the dry land is leveled, a soil loosening layer of 10-12 cm is arranged on the ground surface, after ploughing is completed, spreading the modifying agent for the soda dry land soil of the invention into the soda dry land, wherein the spreading amount is 0.5 ton per mu on average, and after spreading is completed, carrying out rotary tillage to fully and uniformly mix the soil and the modifying agent for the soda dry land soil of the invention; and then watering the improved field, selecting 10 soil samples of the soil at the marked place in 9 months of 2008, and detecting the soil salt content, the soil pH value and the organic matter content in the soil of the selected soil samples.
And (3) test results: in order to observe the test effect, the applicant carries out soil taking and soil detection within the range of 0-20cm of the ground surface depth of the test ground in 3-5 months each year. The average data of the treatment groups and the control groups tested in 2008-2017 are shown in Table 1.
TABLE 1 comparison of physicochemical soil properties of the treated and control groups
From the table 1, the soda saline-alkali land dry land soil of the rural area, the county and the rural area of the Jilin province is well improved, after the improvement is carried out on the soda saline-alkali land dry land soil, the salt content is reduced to 3.5 per mill from 6.6 per mill originally in the first year, the salt content is reduced to 2.8 per mill in the second year, and the salt content is stabilized to be less than 1 per mill after the fourth year; the pH value drops from 10.2 to 9.6 in the first year, 8.7 in the third year and stabilizes below 8.5 after the fourth year; the organic matter treatment is increased from 13.7g/kg to 17.4g/kg in the first year and is stabilized to be more than 20g/kg in the third year.
The research on the yield of the corn planted in the soil improved by the conditioner for the dry farmland soil of the soda saline-alkali soil comprises the following steps:
50 mu of soda dry land of the Longwangxiang county of Jilin province and the nonghanxiang of the nonghanwan of the Jilin province which are improved by the modifying agent and 50 mu of soda dry land of the Longwangxiang county of the nonghangxiang of the non-modified Jilin province are selected to be respectively planted with corns, the planting time and the corn growth management are the same, and the annual yield of the modified field (test field) and the unmodified field (control field) in the harvesting season is shown in Table 2:
TABLE 2
| Appearance characteristics | Average yield per mu | |
| Test field | Big and full | 585 kg |
| Control field | Is not full | 213 Kg |
As can be seen from table 2, the corn yield of the soil improved by the conditioner of the invention is greatly improved, and 213 kilograms per mu before improvement is increased to 585 kilograms per mu.
The present invention is not limited to the above-described preferred embodiments, and various other forms of the product can be obtained by anyone who has come within the teachings of the present invention, but any variation in the details thereof, which is the same as or similar to the present application, falls within the scope of the present invention.
Claims (4)
1. The conditioner for the dry land soil of the soda saline-alkali soil is characterized by comprising the following raw materials in parts by weight: 60-80 parts of blocking agent, 5-6 parts of acidity regulator and organic fertilizer20-30 parts of material and 0.01-0.03 part of microbial agent; the blocking agent consists of inorganic nano materials and fillers: the inorganic nano material is fly ash, the filler is zeolite powder, the weight ratio of the inorganic nano material to the filler is 2-3:5, and raw materials contained in the blocking agent are mixed and stirred uniformly to obtain the blocking agent; the acidity regulator consists of oxalic acid and ammonium sulfate, the weight ratio of the oxalic acid to the ammonium sulfate is 5-6:1, the organic fertilizer consists of humic acid and fulvic acid, and the weight ratio of the humic acid to the fulvic acid is 5-6:1, mixing and stirring an acid regulator and an organic fertilizer uniformly to obtain a mixed material, adding a blocking agent into the mixed material, stirring and mixing for reaction, and compounding and granulating after the reaction is finished to obtain granules; the microorganisms contained in the microbial agent comprise extreme halophilic bacteria and bacillus; the total viable bacteria amount of the microbial inoculum is more than 1.0 multiplied by 108cfu/g, the extreme halophilic bacteria are aspergillus terreus strains, and the bacillus is bacillus licheniformis and bacillus laterosporus; adding a microbial inoculum into the granules, and uniformly mixing to obtain the modifier for the dry land soil of the soda saline-alkali soil.
2. An improver for the upland soil of soda saline-alkali soil according to claim 1, which is used in the following amount: 0.2-0.6 ton per mu.
3. An improver for the upland soil of soda saline-alkali soil according to claim 1, characterized in that the preparation method of said microbial agent is: preparing culture medium, regulating pH to 7.0-8.0, inoculating microorganism, and culturing for 5-7 days to obtain microbial agent.
4. An improver for the upland field soil of soda saline-alkali soil according to claim 1, characterized in that the acid regulator and the organic fertilizer are stirred and mixed uniformly at room temperature of 25-30 ℃ for 40-60 min; adding a blocking agent into the mixed material at the room temperature of 25-30 ℃ while stirring, reacting for 2-3h, and performing compound granulation to obtain granules with the particle size of 3-5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910480025.9A CN110054531B (en) | 2019-06-04 | 2019-06-04 | Conditioner for dry farmland soil of soda saline-alkali soil and preparation method thereof |
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