54results about How to "Prevent back salt" patented technology

The invention discloses a small bow-shaped rain shelter frame and a cultivation method for grape. The rain shelter frame comprises a plurality of semicircular umbrella stands, wherein each semicircular umbrella stand comprises a stand column, a cross beam and a primary bow top; the primary bow top and two ends of the cross beam are welded to form a semicircle; the stand column passes through the center of the semicircle and is vertically fixed with the cross beam; the top end of the stand column is connected with the main bow top; side beams perpendicular to the frame surfaces of the semicircular umbrella stands are respectively connected between each two adjacent semicircular umbrella stands and at two sides of the umbrella stands; at least one secondary bow top is arranged between each two adjacent primary bow tops; two ends of the secondary bow tops are respectively fixed on the side beams at the two sides; and the frame surface of the rain shelter frame is formed by the primary bow tops and the secondary bow tops together. When grape is cultivated by utilizing the shelter frame, high-grade grapes can be cultivated in south rainy regions in China; the ventilation performance and the air permeability of the rain shelter frame after being covered with film can be effectively improved to ensure that the heat dissipation is fast, the humidity is low and the occurrence of diseases and pests is decreased; the root of the grape can be watered from the side by the natural rain water; and thin film removal in winter is not needed.

The invention provides a biochar grassed slope structure for a coastal reclamation district channel. The biochar grassed slope structure is composed of a turf protection layer, a biochar soil recovery layer, a straw water guide layer and a crushed stone water draining body from top to bottom. The turf protection layer is fixed through cross-shaped wooden piles. The biochar soil recovery layer is formed by mixing biochar, flue gas desulfurization gypsum and local topsoil, and a good substrate is provided for the growth of turf. The straw water guide layer is manufactured by crushed straw with different lengths, and the lengths of the straw are gradually reduced from top to bottom according to the structure of an inverted filter layer. The crushed stone water draining body is arranged at a slope bottom, residual water collected in the straw water guide layer is removed timely. On one hand, the good carbon collecting function of the biochar can be utilized, the soil salinity and alkalinity of a reclamation district is improved, and sufficient nutrition is provided for the growth of the turf, and a slope surface is protected better by the turf. On the other hand, the water guide layer made of the straw prevents salt from accumulating in deep soil, seepage deformation is avoided through the structure of the inverter filter layer, a side slope is protected, and the overall structural performance and stability of the side slope are effectively enhanced.

The invention discloses a method for planting paeonia lactiflora in a saline-alkali area, and relates to the technical field of planting of the paeonia lactiflora. The method comprises the following steps: (1) amelioration of saline-alkali land; (2) planting of auxiliary plants; (3) digging of planting holes; (4) seedling raising of seeds of the paeonia lactiflora; (5), transplanting; and (6), daily management. The method provided by the invention improves a survival rate and growth speed of planting of the paeonia lactiflora in the saline-alkali land, improves ornamental value and beautifiesthe environment.

The invention relates to a coastal saline-alkali soil improving method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps that 1, a drainage ditch is built; 2, soil tillage is conducted; 3, drip washing and salt elimination are conducted; 4, the third step is repeated until the salinity and alkalinity are lowered to the specialized range; 5, resin is poured into saline-alkali soil to form a salt prevention layer; 6, the bottom of the drainage ditch is filled with filling materials; 7, soil conditioner and organic fertilizer are applied to the soil. According to the coastal saline-alkali soil improving method, firstly a drainage system is built, soil tillage is conducted, then the tilled soil is subjected to drip washing, after drip washing is conducted repeatedly, the salinity and alkalinity of the soil are lowered quickly, and the method accords with the growth of general plants; due to the fact that fertilizer in the soil is also taken away at the same time of drip washing, the soil is poorer and easier to harden, and therefore, complex fertilizer operation such as application of biological fertilizer is also conducted after drip washing on the soil, so that the fertility of the soil is improved quickly, and the method is suitable for the growth of plants.

The invention discloses a method for improving saline-alkali soil of a coastal mud flat by using a charcoal cushion layer. The method comprises: planning an improvement unit and an improvement district, excavating surface soil of the improvement district to 40-50 cm, laying a charcoal cushion layer in thickness of 10-20 cm, backfilling surface soil, eliminating salt by natural rainfall or drip washing for 3-5 times. The method is simple, and is short in improvement period, and stable in effect, and has no secondary pollution. The use of the charcoal cushion layer effectively controls agricultural non-point source pollution while effectively improves saline-alkali soil, so as to promote improvement of the saline-alkali soil and benign development of agricultural ecology. The method can be applied in improvement of saline-alkali soil of a coastal mud flat, and improved soil can be used for planting rice, wheat, or saline-alkali resource plants.

The invention discloses an improving method for a saline-alkali soil. The method comprises steps of preparing paddy rice seedling, selecting a land, washing salt of fresh water, applying improving fertilizer suitable for the saline-alkali, transplanting the seedlings, daily managing the field and harvesting. The improving fertilizer suitable for the saline-alkali is formed by A fertilizer, B fertilizer and C fertilizer; the A fertilizer is formed by microbial agent, mushroom dreg organic fertilizer, mineral substance and acid improving liquid; the B fertilizer is formed by vegetable pesticide; and the C fertilizer is made of microbial weeding agent. The improving fertilizer suitable for saline-alkali soil cannot only improve saline-alkali soil fertility, but also prevent insect diseases and eliminate weeds; salt is washed via fresh water and trenches are drained to prevent salt re-accumulation; the saline-alkali soil can be comprehensively improved via the improving fertilizer suitable for the saline-alkali soil and paddy rice cultivation; great improving effect can be achieved; the improving method is green, environment protective and causes no pollution, thereby being worthy of promotion and use.

The invention belongs to the technical field of edible fungi cultivation and particularly relates to a saline-alkali soil morchella culturing method. The saline-alkali soil morchella culturing methodis implemented through the following steps of (1) seed fungi selection, (2) seed fungi preparation, (3) cultivation facility preparation, (4) ground processing, (5) sowing and nutrition supplementation, (6) construction of small greenhouses, (7) fruiting and harvesting management and (8) fungi residue returning. By means of the saline-alkali soil morchella culturing method, the adaptability of mycelia can be enhanced; a three-layer greenhouse culture mode is applied for the first time to facilitate temperature control and shorten the culture time; supplementation of culture mediums facilitatesrapid growth restoration of the mycelia; an applied bag arranging manner can simplify culture processes and save labor and material costs. The saline-alkali soil morchella culturing method can effectively reduce the salinity content of soil; fungus growth can improve the soil structure, avoid re-salinization and improve the pH environment of soil; nutrient bags are returned to fields to improve the content of organic matters in soil and accordingly improve the fertility of soil, the land utilization rate as well as the economic benefits of morchella.

The invention discloses organic fertilizer for saline and alkaline land transformation as well as a preparation method thereof. The organic fertilizer for saline and alkaline land comprises 42 to 48 parts by weight of animal waste, 12 to 14 parts of plant straws, 10 to 12 parts of tea powder, 8 to 10 parts of bagasse, 6 to 8 parts of seaweed powder, 4 to 8 parts of a pH regulator, 4 to 6 parts ofan adsorbent and 3 to 5 parts of a loosening agent, and also comprises 1 to 3 parts by weight of microbial agent and 0.01 to 0.03 part by weight of rooting powder. The animal waste, the plant straws,the tea powder, the bagasse and the seaweed powder are subjected to composting treatment, the pH regulator, the adsorbent, the loosening agent, the microbial agent and the rooting powder are added, and pelletizing is performed to prepare the organic fertilizer. The organic fertilizer can effectively improve the soil structure of the saline and the alkaline land, improve the soil fertility and reduce the salinity and alkalinity, cooperates with plant cultivation to improve the water-retaining property of the soil and prevent salt return, can improve the saline and the alkaline land durably andeffectively, and can change the desolate beach into the fertile land after being circulated for many times.

The invention discloses a saline and alkaline land landscaping system and method. The saline and alkaline land landscaping system comprises a salt drain part arranged on a saline and alkaline land, a heating part and a planting part arranged above the salt drain part and the heating part. Through the technical scheme, the salt drain part can effectively cut a water channel between the saline and alkaline land and the planting part and discharge saline and alkaline water in the planting part, so as to effectively prevent the planting part from returning salt. At the same time, the heating part can effectively improve the temperature of the planting part, so as to ensure plants on a planting layer can survive smoothly and grow well at the low temperature, and further to maintain the lawns evergreen in winter.

An muddy coast saline-alkali soil ecotype comprehensive improving method is provided; the method comprises the following steps: digging gutterways; digging water channels on the bottom of the gutterways; paving a salt drainage pipeline in the water channel; paving an isolation layer on the water channels; filling block and particle type rocks in the isolation layer, and using an earthwork cloth to isolate the surrounding soil; adding certain amount of an organic fertilizer-rice husk mixed material into the gutterway backfill soil; planting tree seeds vegetation having strong adaptive ability on the coastal muddy zone enclosing district original soil and improved soil. The comprehensive and vertical technical method is low in investment, cannot pollute the environment, can well process the muddy coast soil salinization problems, and is low in invest, strong in sustainability, and strong in ecological environment benefits.

The invention discloses a modified biomass charcoal-based saline-alkali soil improver, which is prepared from the following materials in percentage by weight: 10 to 40 percent of organic acid modifiedbiomass charcoal, 30 to 70 percent of desulfurized gypsum and 10 to 40 percent of an acidic organic fertilizer. The invention also discloses a preparation method of the improver and a saline-alkali soil improvement method based on the improver. The improver can significantly reduce the pH value of saline-alkali soil, reduce the total salt content and improve the plant emergence rate.

The invention discloses a saline land improvement process. The saline land improvement process comprises the following process steps that 1, a hidden salt elimination pipe is installed, a drainage channel is dug and a water storage tank is constructed; 2, medium trace elements are uniformly sprayed to saline and alkaline land, and irrigation is performed two times after rotary tillage; 3, salt water in the hidden pipe is collected to perform salt water desalting; 3, an organic fertilizer is applied, rotary tillage is performed, and a microbial agent and medium trace element fertilizers are sprayed; 5, the microbial agent is sprayed at fixed period, and irrigation is performed to eliminate salt, wherein 0.1-0.4 part of medium trace element fertilizers, 4-8 parts of organic fertilizer and 0.8-1.6 parts of microbial agent are applied per mu. The process has the technical advantages of being low in soil remediation, simple and convenient to operate, free of salt returning, capable of recycling salt water and improving soil fertility, obvious in effect and free of secondary pollution and facilitates large-area popularization and application. The process has the very important significance on reliving of the soil contamination situation, achievement of agricultural recycling economy and establishment of conservation-minded society.

The invention discloses an organic fertilizer for an improved sandy saline and alkaline land and a preparation method thereof. The organic fertilizer for the improved sandy saline and alkaline land comprises 40-48 parts by weight of animal wastes, 12-18 parts by weight of plant straws, 8-12 parts by weight of bentonite, 8-12 parts by weight of fulvic acid, 6-8 parts by weight of peach pit powder,6-8 parts by weight of tobacco leftovers, 3-5 parts by eight of compound water retention agent and 2-4 parts by weight of sandy soil adhesive and further comprises 1-3 parts by weight of a microbial agent and 0.01-0.03 part by weight of rooting powder. The organic fertilizer is prepared through granulating the animal wastes, the plant straws, the bentonite, the fulvic acid, the peach pit powder, the tobacco leftovers, the compound water retention agent, the sandy soil adhesive, the microbial agent and the rooting powder. The organic fertilizer disclosed by the invention can effectively improvethe soil structure of the saline and alkaline land and increase the soil fertility, reduce the salinity / alkalinity, can also improve the water retaining capacity of soil to prevent salt return in match with plant cultivation, durably and effectively improve the saline and alkaline land and transform a barren beach into a good field after multiple cycles.

The invention discloses a saline-alkali soil repairing novel fertilizer produced by taking high-silicon iron tailings as raw materials.The fertilizer is prepared by stirring and mixing, by weight, 60-70 parts of the high-silicon iron tailings, 2-8 parts of calcium sulfate, 1-6 parts of zinc sulfate, 1-6 parts of plant ash, 5-12 parts of ammonuim humate, 3-8 parts of potassium humate, 1-6 parts of calcium superphosphate, 5-12 parts of bran, 1-6 parts of ammonium molybdate, 3-8 parts of ferric citrate, 3-8 parts of magnesium sulfate heptahydrate, 2-7 parts of monopotassium phosphate, 1-6 parts of potassium chloride, 14-20 parts of fermented chicken manure, 12-18 parts of fermented sheep manure and 10-15 parts of oyster shell powder.According to the saline-alkali soil repairing novel fertilizer produced by taking the high-silicon iron tailings as the raw materials, the soil fertility can be improved, and the ventilation, water seepage, fertilizer conservation and water conservation capacities of saline-alkali soil can be enhanced.

The invention discloses a slope greening method which comprises the following steps: trimming and fertilizing a slope, planting three or more rows of arbors in a high position above the slope, and planting rows of shrubs in the rest positions, wherein the arbors adopt broussonetia papyrifera and the shrubs adopt vitex rotundifolia; burying a micro-moistening irrigation system used for irrigation in the slope. According to the method, the arbors and the shrubs are reasonably combined for finishing slope greening transformation within the shortest time, so that the effects of preventing wind and fixing sand can be achieved and the salt return situation cannot occur.

The invention discloses a method for planting tulips by improving saline and alkaline land. The method comprises the steps of seedling land preparation, seed ball processing, planting, field management and harvesting, wherein drainage channels and planting areas are arranged during seedling land preparation, measures such as salt leaching with fresh water, prevention of salt returning of a rubble layer, salt discharge of a salt discharging pipe and adding of compound fertilizers are executed, the saline and alkaline land is improved, and then planting is performed, wherein the fertilizer A in the compound fertilizers contains a microbial agent, an organic fertilizer and mineral substances, and the fertilizer B in the compound fertilizers contains high-quality peat and high-sulfur coal gangue. By adopting the method, the improvement process of the saline and alkaline land is green, environmentally friendly and free of pollution, and an improvement effect is outstanding. By adopting the method for planting tulips, economic benefits are increased, and the environment is beautified.

The invention discloses an saline-alkali soil desalinating method. The saline-alkali soil desalinating method comprises the following steps of deeply ploughing and ploughing up level lands through a rotary cultivator to enable salinity in topsoil to be ploughed to the lower layer, and besides, subsoil being low in salt content is ploughed to a surface layer; spraying an organic fertilizer mixed with river water through a manure spreader to increase organic matter content in the soil, improve the physics and chemistry properties and salinity composition, and reduce soil PH value; crushing straws through a crusher, after the straws become thoroughly decomposed, spraying crushed straws through a seeder, and covering the soil to which the fertilizer is applied with the crushed straws, so as toreduce soil surface temperature, reduce water evaporation amount of the soil, and provide massive nutrients for soil organisms, and microorganisms propagate; and planting salt-tolerant plants, to increase the ground covering degree, and restrain the accumulation of salt in the soil. Through mechanized operation, the labor consumption is reduced, the desalinating efficiency is improved, and besides, the saline-alkali soil desalinating method is environmentally-friendly and low in cost and can prevent accumulation of salt in the soil.

The invention discloses a soil physical improver for saline-alkali soil and an improvement method, wherein the physical soil improver for saline-alkali soil consists of the following components in parts by mass: 20 parts of peat soil, 18-25 parts of humus soil, 28-33 parts of shell powder, 19‑24 parts of activated carbon, 8‑12 parts of mushroom bag scraps. The physical modifier of the invention can rapidly improve soil properties and increase land production capacity.

The present invention discloses a method for preparing a soil amendment, and the method is mainly characterized in that: by using active ions of humic acid with addition of appropriate amounts of U.S. high-tech products, and via chelation and a reasonable ratio, the soil amendment is obtained in four steps. The technical solution of the invention comprises the characteristics of the humic acid, so elution of soil soluble salts can be accelerated to prevent accumulation of salts in the surface soil, which is contribute to the formation of soil granular structures; the permeability of the soil can be increased, the hydrothermal performance and oxygen content of the soil can be improved, and the development of soil microorganisms can be promoted, which is conducive to the growth of a root system and the increase of root activity; and continued water supply capacity of soil for crops is improved, so the soil amendment prepared by the method can be applied to lands with high salt content soil, heavy clay, and poor permeability, especially protected fields such as greenhouses and saline-alkali soil.

The invention discloses a method for planting radix scutellariae by improving saline-alkali soil. The method comprises the following steps: finishing a seedling culturing field, collecting cuttings, transplanting, performing field management and harvesting, wherein water drainage channels and planting areas are arranged, and broken stone layers and salt discharging pipes are arranged when the seedling culturing field is finished; salt is washed with fresh water; a first fertilizer is added, then, planting is performed, and a second fertilized is added in a planting process; the first fertilizer comprises a microbial agent, organic fertilizer, mineral substances and an acidic modifying liquid; the second fertilizer comprises VA mycorrhizal fungi, ericoid mycorrhizal fungi and orchid mycorrhizal fungi. According to the method for planting the radix scutellariae through improving the saline-alkali soil, the saline-alkali soil is improved by washing the salt by the fresh water, digging trenches, paving the broken stone layers to prevent the salt from returning, and culturing the radix scutellariae; the method has a good improving effect and is environmentally friendly and free of pollution; economic benefit is also increased.

The invention discloses a method for improving heavily-viscous saline-alkali soil to plant shrubs and application thereof. The method includes the steps of forming ridges on the land in a planting area, and constructing drainage channels at the interval of 25-35 m in the direction parallel to the ridges; constructing drainage ditches at the interval 20-25 m in the direction perpendicular to the ridges, communicating the drainage ditches with a peripheral water system, and laying dug-out mounds on the ground surface for heightening to form microtopography; conducting rotary tillage on the soilin the planting area until the maximum width of a soil block is smaller than 2 cm, applying a saline-alkali soil synergistic conditioner and an organic fertilizer, conducting horizontal and transversedeep plowing on the soil so that the soil conditioner and the organic fertilizer can be sufficiently and evenly mixed with the soil, and covering the root ground surface with a grass mat by the thickness of 1-3 cm after shrub seedlings are planted. By means of the method, the structure of the heavily-viscous saline-alkali soil can be improved, salt pouring can be accelerated, salt returning can be prevented, the nutrient state of the soil is improved, the salt content and pH value of the soil are reduced, the harm of salt and alkali to the greening shrubs is relieved, the survival rate of theshrubs is increased, and the sustainable development of heavily-viscous saline-alkali soil greening is promoted.

The embodiment of the invention discloses a mixed ecological zone system and a construction method thereof. The ecological zone system comprises an underground protection system, a surface water accumulation system and a vegetation recovery system. A coastal beach is divided into a saline water area ecological zone, a saline-fresh mixed area ecological zone and a fresh water area ecological zone.The underground protection system is arranged under the ground of the saline-fresh mixed area ecological zone, and is used for regulating and controlling the mutual exchange of underground water of the saline water area ecological zone and underground water of the fresh water area ecological zone. The surface water accumulation system is positioned in the fresh water area ecological zone. The vegetation recovery system comprises a saline water area ecological zone recovery system, a saline-fresh mixed zone ecological zone recovery system, and a fresh water area ecological zone recovery system.According to the mixed ecological zone disclosed by the embodiment of the invention, the saline-fresh mixed area ecological zone suitable for local is constructed, so that fresh water resources are effectively accumulated, protection, management and control of coastal beach areas are realized, salt return of soil is prevented, and the deterioration degree of plant diversity is effectively inhibited.

The invention discloses a salt-resistant and waterlogging-proof concave-convex cultivation method for cotton in coastal saline-alkali soil. The method comprises the following steps: ridging before winter, irrigating with water in ditches to press salt, covering with films to preserve soil moisture and inhibit salt in spring, punching holes on furrow films after a certain ground temperature is reached, and sowing to form concave planting; in the first ten-day period of June, uncovering the mulching film, leveling ridges, performing hilling to the base of the cotton, forming furrows into ridges, forming ridges into furrows, and achieving convex planting. The cultivation method is simple, convenient and practical, salt damage is reduced, seedling emergence of saline-alkali soil is facilitated, the method is also suitable for waterlogging prevention and drainage of saline-alkali soil crops, and the lodging-resistant, stress-resistant and yield-increasing effects are obvious.

The invention discloses a greenhouse soil salinization improving method, comprising: (1) making a greenhouse stuffy at high temperature, to be specific, making the greenhouse stuffy at high temperature for 8-10 days in July to August, and making the greenhouse stuffy at high temperature for 2-5 days before field planting; (2) performing salt leaching by flooding, to be specific, performing salt leaching once by flooding after making the greenhouse stuffy at high temperature for the first time; (3) subjecting vegetables and crops to rotation, and covering the crops in soil to improve the soil; (4) digging rough-drain underground pipe ditches; (5) laying underground pipes, to be specific, laying plastic woven cloth at the bottom of each ditch, spreading sand gravel, laying covered underground pipes, spreading sand gravel around and above the underground pipes, and laying plastic woven cloth; (6) covering with fertilizer, to be specific, covering the sand gravel layer with a layer of organic fertilizer; (7) grading the soil, to be specific, raking apart surface soil, and covering the layer of organic fertilizer with the raked surface soil; (8) performing alkali leaching, to be specific, impregnating surface soil with water or a water solution to wash out excessive saline and alkaline matters in the soil. The method of the invention has significant and lasting improving effect.

The invention discloses a saline-alkaline land remediation structure based on river channel sediment recycling, comprising a saline-alkaline land foundation layer, a separator layer, a reinforcing layer and an improved soil layer; the saline-alkaline land foundation layer is provided with at least one remediation channel. The remediation channels above the reinforcing layer are filled with the improved soil layer made by mixing river channel sediment and sandy soil; halophytes are planted above the improved soil layer; therefore, the utilization issue of the river channel sediment is solved. The sandy saline-alkaline land with low clay content is improved through the river channel sediment with high clay content; therefore, soil quality of the sandy saline-alkaline land is improved, permeability of the sandy saline-alkaline land is decreased, gaps in the soil are decreased, less water evaporates, and water and soil are immobilized. Soil fertility is improved through organics in the river channel sediment; therefore, plant growth is benefited, and economic benefit is produced. Salts in the saline-alkaline land are absorbed through the growth of the halophytes so as to remediate thesaline-alkaline soil, so that river channel sediment is recycled and the natural environment is improved.

The invention belongs to the field of plant cultivation, and particularly relates to a mud flat soil improvement method. The method has a remarkable saline-alkali soil improvement effect. Through crop rotation of broad beans and sesbania, saline-alkali soil improvement can be rapidly completed, the broad beans in the improvement period can be used as green manure after agricultural products are harvested, the sesbania can be cut multiple times to be used as green manure and livestock feed, the saline-alkali soil improvement effect is remarkable, grain crops such as wheat can be normally planted in the improved saline-alkali soil, and the saline-alkali soil becomes a grain field; the method has good economic and social benefits.

The invention discloses a cultivation method for annual ecological interplanting of green manure in a red soil honey pomelo orchard, and relates to the technical field of green manure planting. The cultivation method comprises the following steps of S1, selecting land parcel; S2, selecting the green manure; S3, deeply ploughing the green manure plot and applying a base fertilizer; S4, treating seeds; S5, sowing vicia villosa; S6, managing the vicia villosa; S7, sowing bamboo beans; S8, managing the bamboo beans; and S9, harvesting the green manure. According to the cultivation method for the annual ecological interplanting of the green manure in the red soil honey pomelo orchard, the vicia villosa and the bamboo beans are staggerly planted around a honey pomelo along the circumferential direction and are mixed with the green manure to promote each other, so that soil fertility is improved; through proper water and fertilizer management in the planting process of the vicia villosa and bamboo beans, yield and nutrition of the green manure can be improved, and adequate nutrients are provided for the honey pomelo before picking, so that the problems that the yield of the green manure planted is not high enough according to an existing honey pomelo orchard green manure cultivation method, a complementary relationship between the vicia villosa and the bamboo beans and saplings is difficult to form in using of the nutrients, and therefore nutrient cycling and continuous producing of orchards are adversely affected are solved.

The invention discloses a method for improving soil to plant arbors in a severely-viscous saline-alkali land and an application thereof. The method includes ridging the ground in a planting area, andconstructing drainage channels at intervals of 45-55m parallel to the ridging direction; building a drainage ditch at 20-30m perpendicular to the ridge and communicating with the surrounding water system to ensure that the drenched salt water can be discharged, and padding the excavated soil pile on the soil surface to be elevated for micro-topography; rotary tilling the soil in the planting areauntil the maximum width of the soil mass is less than 3cm, adding a saline-alkali soil synergistic conditioner and an organic fertilizer, evenly spreading, turning the soil vertically and horizontallyand deeply, and mixing the soil fully and evenly; and after the arbor seedlings are planted, covering the roots with straw mats for 2-5cm. The method not only can improve the soil structure of the severely-viscous saline-alkali land, but also can accelerate salt leaching and prevent salt return, reduce the salt content and pH value of the soil, reduce the harm of saline-alkali to greening arbors,improve the survival rate of arbors, and promote the sustainable development of greening of the severely-viscous saline-alkali land.

The invention discloses a saline-alkali soil improvement technology, and belongs to the technical field of soil salinization. The saline-alkali soil improvement technology comprises the following steps: (1) deeply plowing saline-alkali soil before rainy season, and using a saline-alkali soil modifier in a soil plough layer in the deep plowing process; (2) spraying a soil surface active agent on the surface layer of the soil after ploughing; (3) uniformly spreading crushed straws on the surface layer of the ploughed soil; and (4) after the modifier fully reacts with the soil for a period of time (3-4 weeks), under the conditional situation, fully irrigating the soil with fresh water for 2-3 times to leach salt. According to the saline-alkali soil improvement technology, tillage, physical, chemical and biological improvement methods are comprehensively utilized, the structure of upper soil is changed through the tillage method, the soil conditioner is added to condition the chemical property of the soil, a hydrophobic covering layer is formed on the surface layer of the soil through plant straw, water infiltration is guaranteed, water evaporation is prevented, salt return is prevented, the whole process is easy and convenient to operate, the manual operation frequency is reduced, the physical and chemical properties of the soil are improved, and comprehensive treatment of the salinized soil is realized.