65results about How to "Inhibit salt return" patented technology

The invention relates to a saline-sodic land reclamation and control method. Wide and deep research is long developed on the reclamation of saline-sodic land at home and abroad, and more focuses on engineering measures than applies biological techniques; although achievement has been made, some insurmountable difficulties still exist. The saline-sodic land reclamation and control method comprises the following steps: bulk deep loosening, applying soil deep loosening agents and saline-sodic soil improvement agents to deep loosening soil, purposefully and proportionally applying biologically organic fertilizer according to the composition of soil detected by adopting a nutrient balance method and a nitrogen phosphorus and potassium proportioning method which both comprise the following steps: subtracting soil nutrient-supplying amount from the fertilizer requirement of target yield, supplementing the balance through fertilizing, hathpace ridge forming, draining water and controlling salt, planting green manure-saline alkali tolerant high-yielding grass crop jerusalem artichoke to thoroughly improve the soil.

The invention relates to the technical field of severe saline-alkali soil greening, in particular to a method suitable for directly planting macrophanerophyte in natural soil of coast silt severe saline-alkali soil of which 1 m soil body contains more than 2.0 percent of total salt. The method comprises the following steps: building a burrock-type platform field through drainage trenching; paving a water supplying pipeline; broadcasting phosphogypsum and humic acid; then broadcasting semi-decomposed maize straw manure for soil amelioration; conducting mechanical deep tillage and land leveling; paving water seepage pipes; leaching salt through fresh water; electing a macrophanerophyte type; planting. According to the invention, the physical chemical property of the soil is improved through 'soil amelioration, fertilization and deep tillage', so that soil leaching is accelerated while the soil is fertilized. Therefore, a soil ecological environment suitable for tree growth is formed gradually, and lasting greening is further realized. Compared with the greening method in which the ground is elevated through soil dressing, the method has the advantages that cost is reduced; the macrophanerophyte survival rate is higher than 95 percent; low-cost lasting greening of severe saline-alkali soil is realized in very deed; the economic benefit and ecologic landscape of severe saline-alkali soil greening are improved remarkably.

A method assembling straw biochar with microbe bacteria fertilizer so as to improve saline land relates to the saline land improvement method, and aims to solve the technical problems that an existing saline land cannot plant crops or the crops output is low; the method comprises the following steps: composting and fermenting an organic fertilizer so as to obtain decomposed organic fertilizer, uniformly mixing the straw biochar, the microbe bacteria fertilizer and the decomposed organic fertilizer according to weight ratio: 1-12:1:10-20, and piling up the mixture for preparation; uniformly throwing the straw biochar, the microbe bacteria fertilizer and the decomposed organic fertilizer mixing improvement material on the soil surface 0-2 days before soil working, and appilication amount is 1350kg/mu; doing intersect rotary tillage for 1-2 times after fertilizer application, rotary tillage depth is 12-15cm, immediately suppressing the soil after rotary tillage, and then sowing is carried out. The method is simple, modifiers are straw biochar and manure, the materials are easy to get, so cost is low; the improved saline land is obvious in effect; the method is suitable for saline land improvement.

The invention relates to a high-yield cultivation method for honeysuckle on saline and alkaline land. The method includes the key technical steps: selecting 'great mullein' breeds and two-year seedlings; selecting the saline and alkaline land with the salt content of 0.2%-0.3% and pH (potential of hydrogen) of 7.5-8.5; building a drainage system, plowing the land and excavating planting holes; applying 15kg of decayed farm manure and 250g of saline and alkaline land crop compound fertilizers as basic fertilizers in the holes; timely changing soil, planting the honeysuckle and covering black plastic films; reasonably performing pruning and topdressing; comprehensively preventing insect diseases; timely harvesting the honeysuckle; and the like. The honeysuckle is planted on a light saline and alkaline land parcel by the method, so that plants can normally grow and develop, saline and alkaline land resources are sufficiently used, the ecological environment of the saline and alkaline land can be improved, and the land can be improved step by step. Compared with a common planting method, the method has the advantages that the survival rate of the honeysuckle plants reaches 100%, the yield of five-year grown plant medicinal materials is increased by 86.3%, the content of chlorogenic acid and galuteolin is slightly improved and meets 2010 edition standard requirements of China Pharmacopeia, and the method is simple, practicable, easy to operate, remarkable in economic, ecological and social benefit and wide in popularization and application prospect.

The invention discloses a saline-alkali soil modified microbial inoculum and a preparation method thereof. The microbial inoculum comprises, by weight, 10-30 parts of bacillus megatherium HB bacteriapowder, 35-65 parts of phosphorus tailings powder, 12-18 parts of phosphogypsum, 8-25 parts of sugar refinery wastes, 6-26 parts of seaweed residue and 1-8 parts of mannitol. Components of the saline-alkali soil modified microbial inoculum have synergistic interactions with each other to enhance effects, if any one of the components lacks, expected effects cannot be reached, and only when the saline-alkali soil modified microbial inoculum with whole formulas is adopted and 30-80 kg of the microbial inoculum is used per mu, can the effects of increasing fertilizer utilization rate and crop yields, and improving quality and saline-alkali lands be achieved.

The invention belongs to field of agricultural cultivation techniques, and relates to a cultivation method for crops, in particular to a furrow, film, ridge and straw combined type mulching cultivation method for the crops. The method includes the steps of farmland selection, soil preparation, ditching, ridging, basal dressing, intercropping of plants among ridge surfaces according to specification layout, ridge surface straw mulching and furrow body film mulching after crop seeding, top dressing in the seedling stage and the fast-growing stage of the plants, and recovery of mulching film after harvest. The method overcomes shortcomings of straw mulching and film mulching, achieves sustainable production of the crops, reduces waste of agricultural resources and environmental pollution, improves rainfall infiltration, restrains soil evaporation, improves hydrothermal conditions of soil, improves the nutrient status of the plants due to nutrients provided by straw, protects cultivated land, prevents loss of water and fertilizer on the surface of the soil, improves yields of the crops, changes an existing mulching cultivation production method for the crops, and achieves the purpose of protective mulching cultivation.

The invention discloses a method of salt-isolating cultivation improvement of saline-alkali soil through straw and relates to the technical field of saline-alkali improvement. Rising channels of capillary water in high-salt soil is cut off through a straw salt-isolating filter layer, and salt washing is performed on the saline-alkali soil by using rainfall or irrigation water. Meanwhile, humus formed by the decomposition of straw and organic fertilizers is used for adsorbing salt ions, neutralizing the alkali of the soil and improving the soil microenvironment. The structure of the method comprises a straw salt-isolating filter layer which is laid on the upper part of the saline-alkali soil, an organic fertilizer layer at the upper part of the salt-isolating filter layer and a cultivationlayer at the uppermost part from bottom to top. Also, deep ditches are dug between two ridges, and isolation ditches are dug around improved areas. In the method, borrowed soil is not needed, washingand salt washing of the salt soil can be realized with the aid of natural rainfall and irrigation water after covering the straw isolating layer with soil on site, and the cost is reduced. The methodof improving saline-alkali soil is suitable for various saline-alkali soil environment conditions, is a high-efficiency and easy-to-operate method for saline-alkali soil improvement and horticulturalplant cultivation. In addition, the crop straw is used as the salt-isolating layer, so that the reuse of a large amount of straw can be realized to improve the organic matter of the soil, and meanwhile, the method is beneficial for solving the problem of straw burning, and reducing the environmental pollution.

The invention relates to a partial flow collecting, permeation enhancing and evaporation restraining saline land improvement system and method. The improvement system comprises a millstone type water collecting microtopography area and a plurality of first permeation enhancing pipes embedded below the millstone type water collecting microtopography area, wherein the millstone type water collecting microtopography area comprises a semi-arc-shaped mound arranged in a plant pit and used for plantation of plants, the semi-arc-shaped mound is at least partly exposed out of the ground, and an annular cofferdam is arranged on the periphery of the semi-arc-shaped mound. The upper ends of the first permeation enhancing pipes are communicated with the annular cofferdam, the lower ends of the first permeation enhancing pipes are embedded deep into the area, close to the plant root system, below the millstone type water collecting microtopography area, an isolation layer communicated with the lower ends of the first permeation enhancing pipes is further laid at the bottom of the plant pit, and hidden salt elimination pipes are laid in the isolation layer. According to the method, a good microtopography growth environment is overall provided for plants in a coastal saline-alkali land while water and nutrients required by plant growth are satisfied, and plant growth is promoted.

The invention discloses a north coastal region saline soil irrigation method and system in winter. The north coastal region saline soil irrigation method in winter comprises the following steps of 1) digging a well; 2) pumping saline groundwater from the well and storing the pumped saline groundwater through a storage reservoir; 3) freezing the pumped saline groundwater in the step 2) into ice under the natural condition; 4) covering the frozen ice blocks in the step 3) on the surface of the soil to form into an ice coating irrigation layer; 5) pumping unfrozen saline water under the ice layer in the step 4) from the storage reservoir; 6) pumping the saline groundwater from the well and storing the saline groundwater into the storage reservoir when the natural condition changes and the ice coating irrigation layer starts melting; 7) repeating the step 2) to the step 6) and achieving north coastal region saline soil irrigation in winter. The north coastal region saline soil irrigation method in winter has the advantages of fully utilizing saline water sources, reducing exploitation of deep fresh groundwater and being benefited to reduction of the underground water level and restriction of accumulation of salt in the surface deep soil.

The invention relates to the technical field of saline-alkali soil development and utilization and provides a method for improving salt resistance of alfalfa. The method comprises the following specific steps: (1) planting alfalfa, namely A, selecting seeds; B, performing soil treatment; C, seeding; (2) performing cultivation management, namely A, applying glycine betaine solution to roots, preparing the glycine betaine solution into a concentration of 5mmol/L, and applying at the seedling stage according to an amount of 100kg per mu; B, performing irrigation and fertilization, and fertilizing and irrigating at the critical growing stage. According to the method disclosed by the invention, multiple salt controlling and inhibiting agronomic measures such as selection of salt-resistant varieties, deep cultivation, deep cultivation and turnover of straws, balanced fertilization and the like are taken together, the technology of applying the glycine betaine to the roots is combined, the salt resistance of the alfalfa is effectively improved, and the method is easy and convenient to operate, fast in efficacy, high in operability, low in cost and capable of effectively promoting alfalfa production increase in the saline-alkali soil.

The invention is suitable for the technical field of saline-alkali soil improvement, and provides a method for improving the soil fertility of saline-alkali soil by planting sesbania. The method is characterized by comprising the steps of deep ploughing, irrigation and salt separation, wherein soil turning is carried out, weeds of the saline-alkali soil are removed, a compact soil layer is formedbelow the earth surface, and underground water high in salt content is prevented from moving upwards; sowing and fertilizing, wherein seeds need to be soaked or sand is added for wiping the seeds before sesbania sowing, a single sowing mode is used, phosphorus fertilizer is applied, the yield of sesbania is increased, and the content of nitrogen and phosphorus in sesbania is increased; harvestingand fertilizer retention, wherein after the sesbania is ripe, direct ploughing is conducted, straw and livestock manure can be heaped and applied to serve as base fertilizer or conduct topdressing, stalks need to be cut off, chopped and completely buried in the soil layer to prevent moisture evaporation, after sesbania is turned, the total quantity of water-stable aggregates of soil is increased,the soil volume weight is reduced, the porosity is improved, and the soil can be prevented against salt return. Therefore, the fertility of the saline-alkali soil can be improved, and conditions of the saline-alkali soil for planting crops are improved.

The invention relates to a natural soil improvement method for saline and alkaline land. The improvement method includes the steps of natural soil investigation, wherein the physical and chemical properties of natural soil in a planting area are detected; natural soil treatment, wherein the treatment includes a natural soil digging process and a natural soil stirring process; natural soil backfilling, wherein a salt isolating layer is arranged before backfilling, and then backfilling is conducted with the treated natural soil obtained after stirring. The improvement method has the advantages that the salinity and alkalinity of the planting area can be effectively improved, and the pH value and salt content of the natural soil can be mitigated; besides, through the spreading process in natural soil digging, salt and alkali can be diluted, water evaporation of the natural soil can be relieved, and salt accumulation on the surface of the natural soil can be effectively inhibited; in the stirring process, the acidity of the natural soil can be increased, the cation content can be increased, the buffer capability of the natural soil can be improved, and thus the survival rate of transplanted seedlings can be increased.

The invention provides an ecological slope protection method for protecting a side slope of silty soil ditch by using a grass mat, belonging to the technical field of side slope protection and ecological slope protection of saline-alkali soil improved regions. The method comprises a grass mat layer part and a grass plant slope protection part. The method comprises the steps of: (1) flattening the slope surface; (2) spreading the grass seeds; (3) paving a grass mat; and (4) fixing the grass mat with wood nails. In the method, the grass seeds are spread only above the normal water level so as to meet the requirement of the discharge capacity below normal water level on the side slope roughness. Moreover, in the method, the grass mat is required to be tiled upwards to the slope top from the position 20cm below the normal water level so as to reduce the scouring damage of the side slope around the normal waterline caused by the water level fluctuation. Through the invention, on the whole, the soil layer is protected relatively well to realize the anti-scouring function on one hand; and on the other hand, the evaporation of soil particles can be greatly reduced; thus in the region with relatively low mineralization degree, a water and moisture holding function is realized; and in the region with relatively high mineralization degree, inhibition on salt accumulation is facilitated. The method can be used as an effective measure for improving the saline-alkali soil.

The invention discloses a method for promoting salt leaching of saline alkali soil. The invention provides a soil improvement product which is prepared by a method comprising the following steps: (1)inoculating bacillus mucilaginosus into a fermentation medium for culturing to obtain bacillus mucilaginosus fermentation liquor; (2) composting, and thoroughly decomposing the garden waste to obtaingarden waste compost; and (3) mixing the garden waste compost, bentonite and the bacillus mucilaginosus fermentation liquor in proportion to obtain the soil improvement product. The soil improvement product provided by the invention is combined with the method for promoting salt leaching of saline alkali soil, the soil fertility and the soil physical structure are improved, irrigation and salt washing are facilitated, and earth surface salt return is inhibited.

The invention discloses a saline-alkali land soil conditioner based on coal-fired flue gas desulfurization gypsum and biogas waste. The soil conditioner is prepared from components in parts by weightas follows: 20-40 parts of the coal-fired flue gas desulfurization gypsum, 40-80 parts of biogas residues, 10-20 parts of plant straw powder and 2-4 parts of potassium sulfate compound fertilizer. Ca<2+> and Mg<2+> in the coal-fired flue gas desulfurization gypsum replace total exchangeable sodium in the saline-alkali land, so that the content of the exchangeable sodium in the saline-alkali land is reduced; the biogas residues contain rich organic matter, humic acid, amino acid, nitrogen, phosphorus, potassium and microelements, and besides, the biogas residues serve as a binder of the conditioner; the plant straw powder is decomposed and converted by microorganisms into humus, the soil alkalinity is reduced, and the salt tolerance is improved; potassium sulfate compound fertilizer increases nutrients in soil and improve the salt tolerance of crops. The main raw materials of the soil conditioner are from industrial and agricultural wastes, the soil conditioner can be industrialized andconvenient to apply, and the conditioning efficiency of the saline-alkali land is improved.

The invention discloses a salinized soil composite restoration method effectively inhibiting salinization; the method comprises the following steps; soil excavation, laying an isolation layer, plowing soil, applying organic-inorganic composite fertilizer, irrigating and leaching, and covering straws; the salinized soil composite restoration method combines salinized soil physics, chemical and biological methods, uses the isolation layer to prevent deep salinity from transferring to the plowing layer, uses the straw coverage to reduce plowing layer soil surface evaporation, and applies desulfurized gypsum, biological modifier and organic-inorganic composite fertilizer to improve the salinized soil characteristics, thus effectively preventing soil salinization, and improving physics property of the plowing soil layer.

It is a major nation strategic plan for the development of the agriculture after the coastal reclamation of tidal flats, however, the soil of the newly reclaimed tidal flat is featured by high salinity and low nutrient, which seriously limits the process of agricultural development in the tidal flats. The invention relates to a method and application for rapidly developing natural biological membrane of beach reclamation soil, in particular to a method and a material for rapidly and extensively developing natural biological membrane of the soil surface of the coastal beach seriously salty and in situ. The natural biological membrane is enriched by inoculating prepared natural soil suspension and the soil in situ, and the soil natural biological membrane is accelerated and expanded by some technical methods, which can effectively control soil salinization, enhance soil nutrient content and improve beach soil, so as to provide a strong guarantee for the sustainable development of coastal beach agriculture.