34results about How to "Short improvement cycle" patented technology

A biochar-based coast saline-alkali land improvement conditioner and a preparation method and application thereof are disclosed, the biochar-based coast saline-alkali land improvement conditioner comprises, by mass, 55-60 parts of biomass charcoal, 35-40 parts of humic acid, 2-4 parts of beneficial microbial agent, 1-2 parts of urea and 3-4 parts of a binder; the biochar-based coast saline-alkali land improvement conditioner has the synergistic effect of soil improvement, activation of microorganisms, enhancement of crop saltresistance, the soil improvement helps to improve soil microflora and increase the microbial activity in the soil, microbial metabolites also enhance the crop root saltresistance, crop growth feeds back to accelerate the soil improvement, a virtuous cycle system is formed, and multiplier amplification effect can be achieved compared with a single measure.

The invention discloses a saline-alkali land soil conditioner and a preparation method thereof. The saline-alkali land soil conditioner is prepared by adding water in citric acid, polymaleic acid-acrylic acid copolymer, sodium polycrylate and fatty alcohol-polyoxyethylene ether. The preparation method comprises the following steps: weighing raw materials in weight proportioning; adding partial water in a reaction kettle for heating to 50-60 DEG C; adding the fatty alcohol-polyoxyethylene ether, the polymaleic acid-acrylic acid copolymer, the sodium polycrylate and the citric acid in the reaction kettle in turn for fully dissolving; subsequently, adding rest water in the reaction kettle and cooling to 20 DEG C; and after sampling and qualified inspection, measuring and packaging to form a finished product. By using the conditioner, the physical and chemical properties of the saline-alkali soil are obviously improved, heavy metal ions are complexed, emulsification and oil removal are achieved, salinity infiltration is accelerated, alkaline of soil is neutralized, and the pH value is regulated; and the desalination amount of the conditioner can reach above 50%, and the conditioner has the advantages of short improvement period, durable management effect and universality, saves water, increases benefits, yield and income and is environment-friendly.

The invention discloses an organic-inorganic improvement fertilizer for saline-alkali soil and a preparation method thereof. The organic-inorganic improvement fertilizer is prepared from, 20-30 parts of bentonite, 20-30 parts of zeolite, 20-30 parts of flue gas desulfurization gypsum, 10-20 parts of dehydrated sludge, 20-30 parts of humic acid, 10-20 parts of coal ash, 20-30 parts of ardealite, 10-20 parts of peat, 10-20 parts of straw meal, 10-20 parts of animal waste, 2-8 parts of microbial inoculation bacteria and 2-5 parts of emulsified asphalt. The invention further provides a preparation method of the organic-inorganic improvement fertilizer for saline-alkali soil. According to the organic-inorganic improvement fertilizer, the physicochemical character of soil can be improved, soil permeability and moisture and fertilizer preservation can be improved, the soil ion exchange rate can be improved, the PH value can be buffered, the chemical fertilizer consumption can be reduced, the crop yield can be improved, the product quality can be improved, the soil improvement effect can be improved, and the soil improvement cycle can be shortened.

The invention provides a sectional three-dimensional structure for the fast desalting and soil improvement of saline-alkali soil of a new tidal marsh reclamation area. According to the sectional three-dimensional structure, a soil layer of the saline-alkali soil to be desalted is subjected to ditching at the depth of 90-100 cm, and underground pipes are buried in a manner that the burying spacing is 20-30 m and the inclination angle is 1-3 DEG, so as to form an underground-pipe drainage layer; soil of a sectional surface layer of the soil layer is grooved at the depth of 40-45 cm and is stacked in an open space aside, and straws are laid uniformly after the surface of soil is leveled, so as to form a straw isolating layer with the thickness of 5-8 cm; and chopped straws and desulfation gypsum are added into the soil of the surface layer, which is stacked aside, the chopped straws, the desulfation gypsum and the soil of the surface layer are mixed uniformly, composite soil with the thickness of 10-15 cm is laid on the straw isolating layer, infiltrating irrigation capillaries are laid in the spacing of 0.8-2 m, and rest composite soil is then laid and is leveled, so as to form a straw and gypsum mixed cultivation layer. The sectional three-dimensional structure has the advantages that the sectional three-dimensional structure is organically combined into a whole up and down, the effects on the fast desalting and soil improvement and effective salinization process inhibition of the new tidal marsh reclamation area are remarkable, and the improvement cycle for the saline-alkali soil of the new reclamation area can be shortened effectively.

The invention provides a horizontal and vertical combined underdrainage device for improving interlayer soil of coastal mud flat reclamation area farmland. According to the device, coastal mud flat saline-alkaline land is provided with salt leaching channels, drainage bodies, concealed water flow collection and water suction conduits and open drainage ditches. The concealed water flow collection and water suction conduits are buried under the coastal mud flat saline-alkaline land according to the line spacing of 17-25 meters. The salt leaching channels are respectively provided with a vertical shaft every 4-6 meters in the length direction of the concealed water flow collection and water suction conduits, and the drainage bodies are arranged in the vertical shafts. The water inlet ends of the concealed water flow collection and water suction conduits are higher than the water outlet ends of the concealed water flow collection and water suction conduits, and the water outlet ends are connected with the open drainage ditches. The invention further provides a combined drainage method. According to the method, salt in the soil of the coastal mud flat saline-alkaline land is leached and flows into the vertical shaft type salt leaching channels along with water flow, and the concealed water flow collection and water suction conduits collect the water flow in the salt leaching channels and guide the water flow into the open drainage ditches. The device has the advantages of being reasonable in structure, convenient to construct and install, low in cost, short in improvement period, fast in effect, capable of being widely applied and popularized in the areas with the irrigation and drainage conditions and especially suitable for improving the highly-saline soil of the coastal mud flat reclamation area.

The invention discloses a water saving saline land soil improvement method comprising the following steps: 1, soil detection, sampling the soil and detecting soil salt content index; 2, applying improvement fertilizer; 3, applying improvement liquid; 4, doing a second time soil sampling detection 25-40days after the said steps are finished, if basic conditions of plant growth are not reached, continue doing step 2 and 3 until reaching soil plantation qualified standard; 5, planting crops and spraying liquid mulch film. The method applies improvement fertilizer to increase organic matter, NPK and trace element content, to increase soil water retention and permeability, and to increase soil granule compositions; the method applies improvement liquid so as to accelerate salt elimination speed, thus reducing soil PH value, accelerating beneficial microbe breeding, and promoting crop germination and root prosperity; after the crop is sowed, the liquid state mulch film can be sprayed so as to provide water retention effect, thus preventing moisture evaporation.

The invention discloses a saline-alkali land improving and fertilizing agent and a preparation method thereof. The saline-alkali land improving and fertilizing agent are mainly prepared from 20 to 40 portions of fly ash, 10 to 20 portions of humic acid and 5 to 10 portions of organic substance through processes of crushing, matching and mixing, granulating, drying, cooling, sieving, magnetizing and the like. Compared with the prior art, a product of the invention has the advantages of short period for improving the saline-alkali land, high efficiency and low cost; if 50 kilograms of product is applied to each acre as base fertilizer, the seedling emergence rate of planted crops can reach 98 percent, for example, 406 kilograms of wheat is harvested in each acre and is equal to the planting harvest of the normal soil, and after the harvest, the salt content of the soil is 0.55 percent and the desalination rate reaches 47 percent through soil measurement, so that the soil granule structure is improved; and the product can reduce the salt and restrain the alkali, is soil improvement agent, also can be used as fertilizer, reduces the planting cost, has the same using method as a common fertilizer when the product is used as the fertilizer, has remarkable fertilizer efficiency in saline-alkali and poor soil, and can increase the yield by 10 to 30 percent relative to different crops compared with the used common fertilizer. Therefore, the saline-alkali land improving and fertilizing agent not only can improve the soil granule structure, but also can accelerate the improvement of soil desalination; meanwhile, the saline-alkali land improving and fertilizing agent is fertilizer, greatly reduces the planting cost of peasants, and improves the planting income of the peasants.

The invention discloses a method for rapidly improving plough-layer soil of newly cultivated barren lands in southern hilly and mountainous regions, belonging to the technical field of soil improvement. The method comprises the steps of cultivating the barren lands for preparation; digging latticed fertilizing and planting ditches; preparing and applying mixtures including a fertilizer and a water-retaining agent; sowing seeds of ryegrass for the first time, cradling and covering; sowing seeds of ryegrass next year, cradling and covering; and the like. The method disclosed by the invention is definite in step and simple and feasible in process, after two years continuous integrated improvement, the soil bulk density is reduced, the void fraction is increased, the level of nutritive substances such as organic matters, total nitrogen, quick-acting nitrogen, phosphorus and potassium is improved obviously, the plough-layer soil can reach a medium fertility level, and normal agricultural utilization can be carried out. The method can be popularized and applied in newly cultivated barren lands in southern hilly and mountainous regions of China.

The invention relates to the field of soil improvement, in particular to a soil improvement method. Idle land is deep plowed, inorganic adsorbents, chelating agents and biological adsorbents are uniformly applied, the land is leveled and properly irrigated, and the treated land is idled for four to six months and then can be used for planting again. The method is short in soil improvement period, rapid in effect, moderate in improvement cost and high in land applicability. The method has the advantages that soil pollution states can be rapidly improved, heavy metal pollution improvement effects are the best, soil permeability water-retaining properties are improved, soil carbon sink is increased, pesticide residues and heavy metal of soil are degraded to meet organic planting requirements, organic conversion of the soil can be rapidly finished, the soil improvement period is short, the effects are rapid, cost can be controlled, organic planting standards can be met basically within six months, bad conditions of the soil are improved, the quality of planted food is directly changed, and fitness of people is benefited.

The invention relates to a soil amendment which is prepared from, by weight, 50-150 parts of fly ash, 100-200 parts of livestock manure, 100-200 parts of active sludge, 150-250 parts of leguminous green manure and 10-30 parts of mushroom bran. Compared with the prior art, the soil amendment has the advantages that soil aggregation is promoted, soil physical and chemical properties are improved, soil fertility is improved, and the yield of crops is increased.

The invention discloses a buccal tablet for improving intestinal flora. The buccal tablet is prepared from the following main raw materials in parts by weight: 10-20 parts of Chinese yams, 3-5 parts of bee propolis, 5-10 parts of centella asiatica, 4-8 parts of garlicin, 5-15 parts of carrots, 6-10 parts of hawthorns, 15-25 parts of folium sennae, 3-8 parts of hericium erinaceus, 4-7 parts of tangerine peel and 15-25 parts of apples. The buccal tablet has the special effects of improving intestinal flora, regulating the internal secretion, improving intestinal circulation, replenishing trace elements required by a human body and softening hardness to dissipate stagnation, and is durable in effect, capable of treating both symptoms and root causes, free of side effects, stable in curative effect and capable of ensuring that diseases do not easily recur.

The invention discloses a soil improving method comprising the following steps of allocating electric power, building an irrigation system, removing weeds before reclaiming, scattering yellow sand on the reclaimed land, examining ph value of a to-be-ploughed land and adjusting the ph value, scattering sheep manure, herb residues and applying base fertilizer, and deep ploughing in autumn and winter after preparation for previous reclaiming. The structure of the reclaimed soil is greatly improved by the use of the soil improving method; the improvements lie in that fundamental facilities are completed, soil viscidity is reduced, porosity s increased, fertility is enhanced, ph value is proper, weeds are thoroughly removed, bacteria and virus are greatly eliminated; the land is flattened and ridged according to plant plantation features and requirements; base fertilizer is re-applied; seedlings are prepared and then broadcast and cultivated; the improved soil can meet demands for cultivation of agricultural crops or commercial plants; and land resource can be rationally utilized.

The invention discloses a production method and application of a straw-sourced ginseng facilitation cultivation matrix. Stem and skin removed corn straws are crushed, mixed with organic raw materialsincluding peat, loess, linden sawdust, bone meal, humic acid and probiotics according to certain proportion, and then fermented in a facility greenhouse. After fermentation, the matrix serves as a greening substance, the artificial soil vitality is recovered gradually in soil utilization, so that property of the soil approaches that of ginseng cultivation soil. The bionic forest soil production method can overcome disadvantages that artificial ginseng soil improvements in agriculture ginseng cultivation is long in period and tedious in process, the utilization rate of a greenhouse is improved,and a matrix resource which is excrement in physical and chemical properties and can be used sustainably is provided for farmland ginseng cultivation. The ginseng soilless culture matrix production process is simple, and the method is suitable for large-scale production and application.

The invention provides a precise quantitative fertilizer applicator of a slow release fertilizer for use in saline and alkaline land soil improvement. The precise quantitative fertilizer applicator comprises a feeding rolling body, wherein the outer surface of the feeding rolling body is provided with a plurality of troughs; a shaft body for autorotation of the feeding rolling body is arranged in the feeding rolling body; the outer surface of the feeding rolling body is provided with a conveying belt which is attached to the feeding rolling body and can drive the feeding rolling body; the conveying belt is distributed within the angle range of 70-260 degrees on the feeding rolling body; a first follower roller is arranged on the feeding rolling body at the position of 70 degree; a second follower roller is arranged on the feeding rolling body at the position of 260 degree; a driving roller is also arranged on the left side of the feeding rolling body; the first follower roller, the second follower roller, the driving roller and the feeding rolling body are in wrapping connection by the conveying belt. The fertilizer applicator has the advantages that the fertilizer application amount is rationally set, the defect of residual fertilizer or poor soil improvement effect due to over mush fertilizer is avoided, the soil improvement period is short, the soil alkali return degree is low, the saline and alkaline land soil component can be controlled and the cultivated area of China can be improved.

The invention discloses a method for improving soil to plant blueberries by using saponin wastewater. The method comprises four steps of fetching the saponin wastewater and irrigation water, improving the soil, performing field planting and performing regular watering. By the adoption of the method for improving the soil to plant the blueberries by using the saponin wastewater, the cost input is mainly the transportation cost of the saponin wastewater, 0.01 m<3>-0.5 m<3> of the saponin wastewater is needed by per mu of land, one truck transports 8 m<3> wastewater at a time, the transportation expense is 100 yuan at a time, and then people need to input 0.125-6.25 yuan averagely per mu of land. Compared with a traditional improved method in which the soil improvement cost is 10,000-50,000 yuan per mu of land, the cost input in the method for improving the soil to plant the blueberries by using the saponin wastewater can be regarded as zero-cost input basically, and the economic benefits can be directly increased by 10,000-50,000 yuan per mu of land. Moreover, in the method, the field soil is improved in an irrigated mode, compared with a traditional mode of shedding and mixing sulphur powder, operation is more convenient, and the improvement cycle is substantially shortened. The required improvement time in the traditional improvement method is 6-12 months, while the required improvement time in the method is only 7 days. The method is easy and convenient to implement, and the management of a blueberry garden is facilitated.

A biochar-based coast saline-alkali land improvement conditioner and a preparation method and application thereof are disclosed, the biochar-based coast saline-alkali land improvement conditioner comprises, by mass, 55-60 parts of biomass charcoal, 35-40 parts of humic acid, 2-4 parts of beneficial microbial agent, 1-2 parts of urea and 3-4 parts of a binder; the biochar-based coast saline-alkali land improvement conditioner has the synergistic effect of soil improvement, activation of microorganisms, enhancement of crop saltresistance, the soil improvement helps to improve soil microflora and increase the microbial activity in the soil, microbial metabolites also enhance the crop root saltresistance, crop growth feeds back to accelerate the soil improvement, a virtuous cycle system is formed, and multiplier amplification effect can be achieved compared with a single measure.

The invention discloses a garden soil improvement process. The garden soil improvement process includes the following steps: plowing the soil, removing the plowed soil, laying a layer of fermenting material on the bare land, and spraying an aqueous solution of ferrous sulfate; mixing the plowed and removed soil with a soil-preserving agent, spreading the soil back to the surface after uniform stirring; plowing the soil twice to expose the soil to the sun for 2-3 days; sprinkling a layer of desulfurization gypsum on the soil surface and then sprinkling a layer of compound fertilizer water agent, plowing the soil for the third time after watering and moistening, and spreading the soil to complete the process. The garden soil improvement process adopts an organic-inorganic improvement method,soft and fluffy inorganic materials are used for soil conservation measures, organic fermentation products and humus soil are added to improve soil fertility while soil hardening, water retention andwater holding capacity are improved, and the effect of improving garden soil lastingly is achieved.

The invention discloses a method for improving the quality of rice kernel amino acid, comprising the following steps of: A, syncretizing a cDNA (complementary deoxyribonucleic acid) segment of dragline silk protein gene separated from a spider with glutelin promoter, and constructing a recombinant carrier; B, introducing the recombined carrier to rice through agrobacterium tumefaciens mediated transgenosis method, and obtaining a converted plant; C, carrying out positive detection on T0 generation transgenic plant by using polymerase chain reaction (PCR), and obtaining positive monoclonal selfedseed; D, growing the selected T0 generation positive monoclonal seed into a family (T1), and carrying out positive detection on T1 generation monoclonal plant; E, continuously planting T1 generation positive monoclonal seed into T2 generation family, selecting pure monoclonal plant with improved amino acid quality, selfing and reserving seed; F, carrying out phenotypic selection on the selected pure monoclonal plant, and culturing new material. The method is simple and easy, and the operation is simple and convenient; the cDNA segment from spider dragline silk protein gene for expressing the rice grins improves the content of amino acid in the rice kernel, and improves nutrition of the kernels; the method improves quality of the rice kernels, and the efficiency is high; and the method is used for improving the crop quality.

The invention discloses an alkaline soil alkali-digesting, improving and plant growth promoting method. The alkaline soil alkali-digesting, improving and plant growth promoting method comprises the following steps that 1, initial alkali digestion is performed, standing straw in alkaline soil is cut into smashed straw and laid on the earth's surface after crop harvesting, and urea phosphate is sprayed; 2, drip washing is performed, rotary tillage and flatting are performed on the earth's surface of the alkaline soil to obtain a plough layer, the plough layer is irrigated, and salt and alkali drip washing is perform to a subsoil layer of the plough layer; 3, mulching film laying, drop irrigation and sowing are performed, wherein a mulching film is laid on the alkaline soil surface, and crops are sowed by punching the surface of the plastic mulching film or before the plastic mulching film is laid; 4, alkali digestion and fertilization are performed in a growth period, an alkali-digesting agent for alkaline soil is drop-irrigated in the growth period of the crops, and alkali digestion and improvement of alkaline soil are achieved. By the adoption of the alkaline soil alkali-digesting, improving and plant growth promoting method, the alkaline soil can be remarkably improved in a long-acting mode, a relatively ideal growth environment can be also rapidly created for crop root system in a short time, accordingly an alkaline soil improving period is effectively shortened, and alkaline soil improving efficiency is improved.

The invention discloses improved soil containing aquatic product processing waste water. The improved soil is characterized in that a preparing method of the improved soil containing the aquatic product processing waste water includes the steps that a microbial starter is added into the aquatic product processing waste water, plant leaf powder is added after fermentation is carried out for 2.5-4.5 days, fermentation continues to be carried out for 1.5-3.5 days, soil is added and soaked for 0.5-2.5 days, the soil is stirred once every half a day during soaking, and the improved soil containing aquatic product processing waste water is obtained through drying. The microbial starter is rhodotorula glutinis, mold funli, microbacterium and pseudomonas, and the plant leaf powder is Chinese honey locust leaf powder. Compared with the prior art, the improved soil containing the aquatic product processing waste water is low in cost and short in improvement cycle, effectively uses the aquatic product processing waste water and reduces environment pollution, and is high in soil fertility and capable of promoting crop growth and improving crop immunity.

The invention discloses a method for increasing the content of vitamins of rice grains. The method comprises the following steps: A, constructing a recombinant vector; B, obtaining a transgenic plant;C, harvesting selfed seeds of single plant; D, selfing and seeding for the T1 generation; E, selfing and seeding for the T2 generation; F, selecting phenotype; and further comprises the steps of constructing the recombinant vector, namely separating the cDNA fragment of a gamma-tocopherol transmethylase gene from arabidopsis thaliana, and digesting and linking the cDNA fragment and specific gluten GluB-1 promoter of rice grains onto the expression vector pCAMBIA1300 to form the recombinant vector. According to the method, the content of vitamin E of rice grains is improved, the rice grain quality is improved, and a novel rice material with improved quality can be created.

The invention discloses a method for utilizing sweet potato starch acid slurry wastewater to improve paddy soil and reduce heavy metal content of rice, and belongs to the technical field of agriculture. The method is characterized in that the method includes steps of soil improving with wastewater, regular watering and paddy field management; and the method can adjust the pH values of paddy soil by acid slurry wastewater produced by sweet potato starch and improve the organic matters of soil, so that the activation of heavy metal in the soil can be inhibited, and the purpose of reducing the heavy metal content of rice can be achieved. The method can be used for paddy soil improvement and soil heavy metal pollution remediation technologies, and has advantages of being low in cost, simple inoperation, green and environment-friendly.

The invention discloses improved soil containing aquatic product processing waste water. The improved soil is characterized in that a preparing method of the improved soil containing the aquatic product processing waste water includes the steps that a microbial starter is added into the aquatic product processing waste water, plant leaf powder is added after fermentation is carried out for 2.5-4.5 days, fermentation continues to be carried out for 1.5-3.5 days, soil is added and soaked for 0.5-2.5 days, the soil is stirred once every half a day during soaking, and the improved soil containing aquatic product processing waste water is obtained through drying. The microbial starter is rhodotorula glutinis, mold funli, microbacterium and pseudomonas, and the plant leaf powder is Chinese honey locust leaf powder. Compared with the prior art, the improved soil containing the aquatic product processing waste water is low in cost and short in improvement cycle, effectively uses the aquatic product processing waste water and reduces environment pollution, and is high in soil fertility and capable of promoting crop growth and improving crop immunity.

The invention discloses an improver applied to crops in saline-alkali soil. The improver comprises the following components in parts by mass: 50-70 parts of a fertilizer, 4-8 parts of a microbial agent, 10-20 parts of straw charcoal, 10-20 parts of an acidity regulator, 10-15 parts of a blocking agent, 1-3 parts of a settling agent and 2-6 parts of a sodium ion adsorbent. The improver is common incomponents, easy to prepare, low in cost and capable of efficiently improving saline-alkali soil and shortening the soil improvement period.

The invention discloses a comprehensive saline-alkali land improvement system and a comprehensive saline-alkali land improvement and belongs to the technical field of land treatment. According to the system and the method, stems of alkali-resistant crops are utilized as silage so as to be eaten by domestic animals of a herding system, faeces generated by the domestic animals are thoroughly decomposed, then most of the faeces is returned to a saline-alkali land planting system, a small part of the faeces is conveyed to an aquaculture system, water in the aquaculture system is diverted to the saline-alkali land planting system so as to be used for irrigating a saline-alkali land, and lotus leaves in the aquaculture system as well as used culture medium and old crop leaves in a soil-less cultivation system are returned to the saline-alkali land planting system. The comprehensive saline-alkali land improvement system and the comprehensive saline-alkali land improvement method integrates ecological exploitation, livestock breeding, aquaculture, agriculture planting, agricultural technology popularization and sightseeing tour, have the advantages of short saline-alkali land improvement period, good effect and the like, and have wide application prospect and important practical significance.

The invention discloses a method for improving soil to plant blueberries by using saponin wastewater. The method comprises four steps of fetching the saponin wastewater and irrigation water, improving the soil, performing field planting and performing regular watering. By the adoption of the method for improving the soil to plant the blueberries by using the saponin wastewater, the cost input is mainly the transportation cost of the saponin wastewater, 0.01 m<3>-0.5 m<3> of the saponin wastewater is needed by per mu of land, one truck transports 8 m<3> wastewater at a time, the transportation expense is 100 yuan at a time, and then people need to input 0.125-6.25 yuan averagely per mu of land. Compared with a traditional improved method in which the soil improvement cost is 10,000-50,000 yuan per mu of land, the cost input in the method for improving the soil to plant the blueberries by using the saponin wastewater can be regarded as zero-cost input basically, and the economic benefits can be directly increased by 10,000-50,000 yuan per mu of land. Moreover, in the method, the field soil is improved in an irrigated mode, compared with a traditional mode of shedding and mixing sulphur powder, operation is more convenient, and the improvement cycle is substantially shortened. The required improvement time in the traditional improvement method is 6-12 months, while the required improvement time in the method is only 7 days. The method is easy and convenient to implement, and the management of a blueberry garden is facilitated.

The invention belongs to the technical field of environments, and particularly relates to a Bayer process red mud improver and a using method thereof. The Bayer process red mud improver is composed ofa liquid improver and a solid improver, the liquid improver is composed of glucose, yeast extract, starch, calcium dihydrogen phosphate and distilled water according to a mass ratio of (5-15):3:(10-20):(5-10):1000, and the solid improver is bagasse and / or plant straws. The invention also provides a using method of the Bayer process red mud improver. The liquid improver and the solid improver areadded to the Bayer process red mud step by step to improve the Bayer process red mud. The improver has the advantages of reduction of the pH value of the Bayer process red mud, improvement of the physical and chemical properties of the Bayer process red mud, no secondary pollution to the Bayer process red mud, realization of environmentally friendly improvement, and good application prospect.

The invention provides a sectional three-dimensional structure for the fast desalting and soil improvement of saline-alkali soil of a new tidal marsh reclamation area. According to the sectional three-dimensional structure, a soil layer of the saline-alkali soil to be desalted is subjected to ditching at the depth of 90-100 cm, and underground pipes are buried in a manner that the burying spacing is 20-30 m and the inclination angle is 1-3 DEG, so as to form an underground-pipe drainage layer; soil of a sectional surface layer of the soil layer is grooved at the depth of 40-45 cm and is stacked in an open space aside, and straws are laid uniformly after the surface of soil is leveled, so as to form a straw isolating layer with the thickness of 5-8 cm; and chopped straws and desulfation gypsum are added into the soil of the surface layer, which is stacked aside, the chopped straws, the desulfation gypsum and the soil of the surface layer are mixed uniformly, composite soil with the thickness of 10-15 cm is laid on the straw isolating layer, infiltrating irrigation capillaries are laid in the spacing of 0.8-2 m, and rest composite soil is then laid and is leveled, so as to form a straw and gypsum mixed cultivation layer. The sectional three-dimensional structure has the advantages that the sectional three-dimensional structure is organically combined into a whole up and down, the effects on the fast desalting and soil improvement and effective salinization process inhibition of the new tidal marsh reclamation area are remarkable, and the improvement cycle for the saline-alkali soil of the new reclamation area can be shortened effectively.

The invention discloses a saline-alkali land soil conditioner and a preparation method thereof. The saline-alkali land soil conditioner is prepared by adding water in citric acid, polymaleic acid-acrylic acid copolymer, sodium polycrylate and fatty alcohol-polyoxyethylene ether. The preparation method comprises the following steps: weighing raw materials in weight proportioning; adding partial water in a reaction kettle for heating to 50-60 DEG C; adding the fatty alcohol-polyoxyethylene ether, the polymaleic acid-acrylic acid copolymer, the sodium polycrylate and the citric acid in the reaction kettle in turn for fully dissolving; subsequently, adding rest water in the reaction kettle and cooling to 20 DEG C; and after sampling and qualified inspection, measuring and packaging to form a finished product. By using the conditioner, the physical and chemical properties of the saline-alkali soil are obviously improved, heavy metal ions are complexed, emulsification and oil removal are achieved, salinity infiltration is accelerated, alkaline of soil is neutralized, and the PH value is regulated; and the desalination amount of the conditioner can reach above 50%, and the conditioner has the advantages of short improvement period, durable management effect and universality, saves water, increases benefits, yield and income and is environment-friendly.