50results about How to "Improve sand fixation effect" patented technology

The invention discloses a wind prevention, sand fixation and water retention afforestation method and belongs to the technical field of environmental protection engineering. The method comprises steps as follows: a curing agent is prepared from sodium carboxymethylcellulose, anionic polyacrylamide, ferrous chloride and water; the curing agent and sand are blended to form cured sand; deep holes for tree planting and shallow trenches for grass planting are dug in the sand land, water collecting hoppers are drilled in the deep holes, the deep holes and the shallow trenches are filled with the cured sand, and the cured sand form deep hole sand fixation and water absorption layers in the deep holes and form shallow trench sand fixation and water absorption layers in the shallow trenches; saplings are planted in the deep holes, the roots of the saplings extend into the mouth parts of the water collecting hoppers, and grass seeds are scattered in the deep holes and the shallow trenches; the grass seeds are covered with a mulching film for maintenance, and small ventilation holes are formed in the mulching film. The curing agent and the sand soil are blended, inside gaps of soil particles can be filled with the blended curing agent and sand soil, the cured sand particles don't easily disperse and jump, sufficient water can be continuously provided for plants, and the long-time wind prevention, sand fixation and water retention effects are achieved.

The invention relates to sand accumulating and forest planting technology in an extremely drought Gobi sand area, which fully utilizes conditions that the Gobi sand area is open, the wind carries quicksand on the near surface and the Gobi sand area has certain flood recession to accumulate sand in planting pits, utilizes the condition that the Gobi area is close to certain flood-recession facilities to irrigate the planting pits and accumulate silts, and utilizes the condition that autumn flood is relative rich to plant forest. The technology firstly plants adaptable species in the Gobi sand area, such as narrow-leaved oleaster and Chinese tamarisk to form an early arbor-bush mixed forest, then plants bush plant species which grow quickly, such as Calligonum rubicundunm after a certain condition of accumulated sand and silt is formed in the forest belt to further strengthen sand fixing function of the forest belt, and plants less adaptable arbor tree species, such as poplar tree after relative good soil and water conditions are formed in the forest belt so as to gradually increase species diversity and strengthen comprehensive prevention function of the forest belt.

The invention discloses a starch-grafted waterborne polyurethane sand fixing agent and a preparation method thereof. The sand fixing agent is a starch-grafted waterborne polyurethane dispersion liquid of which the viscosity is 20-500 mPa.s at the temperature of 25 DEG C, the solid content is 30-45 percent by weight, the pH value is 6-8, and the storage stability is higher than six months; and the Shore hardness of a filmed dispersion liquid is 35-45. The sand fixing agent is obtained by undergoing a polymerization reaction on polyether polyol, diisocyanate, dimethylolpropionic acid, a neutralizing agent, starch, a latent solvent and a catalyst for forming a performed polymer and adding into deionized water for emulsifying. The starch-grafted waterborne polyurethane sand fixing agent has the advantages of degradability, nontoxicity, non-flammability, use safety, environmental friendliness, high nutrition and the like, and can be widely applied in the fields of agriculture and forestry as an environmentally-friendly nutritional sand fixing agent.

The invention provides a carex brunnescens seed germination method. The method comprises the steps as follows: after carex brunnescens seeds are washed and aired, seed coats are broken with a mechanical treatment method and an acid or alkaline solution soaking method, disinfection is performed with an ethanol solution after washing, then, seeds are soaked with distilled water and soaked with a gibberellic acid solution with concentration of 50-200 mg/L, meanwhile, temperature change tretament adopting 25 DEG C and 5 DEG C high/low temperature alternation is performed, and a germination test isconducted. The germination rate of the carex brunnescens seeds is increased, the germination rate after 10 d of germination reaches 47.9%-65.1%, seeds germinate uniformly, the germination time is shortened, the problem of breeding of carex brunnescens in Maqu cold upland is solved, the biological desertification prevention and control cost is reduced, the method has great significance in shortening the restoration time of deteriorated grassland, reducing original vegetation deterioration and improving sand stabilization effect, and new research prospects are opened up for technical approachesof exploring ecological restoration of deteriorated grassland in the cold upland.

The invention discloses a chemical sand fixing agent application device and method. The application device comprises nozzles (1), a liquid distributing plate (2), a liquid conveying pipe (3), a liquid storage tank (4) and a load bearing vehicle (7), wherein a chemical sand fixing agent is stored in the liquid storage tank (4); the liquid distributing plate (2) is communicated with the liquid storage tank (4) through the liquid conveying pipe (3); the chemical sand fixing agent in the liquid storage tank (4) flows into the liquid distributing plate (2) through the liquid conveying pipe (3); the nozzles (1) are vertically and uniformly distributed at the bottom of the liquid distributing plate (2); the chemical sand fixing agent entering the liquid distributing plate (2) is divided into the nozzles (1), and is injected onto sand through the nozzles (1), so as to be applied onto the sand through point injection. According to the chemical sand fixing agent application device and method, the sand fixing effect can be improved, the effective utilization rate of the sand fixing agent is increased, the application amount of the sand fixing agent is reduced, the condition that a water-proof consolidated layer is formed on the surface of a sand bed can be effectively avoided, the adverse effects on soil infiltration performance are reduced, and resistance on seed germination is reduced, so that the recovery rate of desertification can be greatly improved.

The invention discloses a preparation method of a grass planting and sand fixing brick. The preparation method is characterized by adopting the following materials in parts by mass: 5 to 15 parts of calcined desulfurization gypsum, 5 to 15 parts of sulfur-fixing ash, 60 to 80 parts of desert sand, 2 to 5 parts of crop straw powder, 0.05 to 0.15 part of a surfactant, 2 to 5 parts of an organic matter, 0.05 to 0.5 part of a water retaining agent, 0.1 to 0.5 part of herbaceous plant seeds and water of which a water-solid ratio is 0.55 to 0.7. The invention also discloses the grass planting and sand fixing brick prepared by adopting the preparation method. The grass planting and sand fixing brick disclosed by the invention is low in cost and convenient in production, the mechanical property meets the requirement of slope protection of a desert highway; the grass planting and sand fixing brick has the advantages that good environment coordination is obtained, and a suitable grass seed growth environment is provided; meanwhile, regeneration and cyclic utilization can be realized, the pavement stability is good, sand slope pavement and grass planting are facilitated, and the like.

The invention provides a cation fenugreek-humic acid sand curing agent which is prepared by coating humic acid by hydrophobic association cation fenugreek, specifically, by taking cation fenugreek anda hydrophobing agent as reaction monomers, dissolving into a solvent, carrying out a grafting reaction under the action of an alkali catalyst, synthesizing a hydrophobing association cation fenugreeksolution, putting a humate solution into the hydrophobing association cation fenugreek, carrying out a reaction so as to obtain a coating, drying, and crushing, thereby obtaining the sand curing agent, wherein the hydrophobing agent is a long-chain organic matter which can be reacted with hydroxyl under an alkali condition. Due to an electrostatic function of cation of the sand curing agent and anion on the surfaces of sand grains, the purpose of fixing sand is achieved; the cation fenugreek has certain hydrophilicity and water retention properties, in addition, the humic acid self is rich inhydrophilic functional groups, and thus the sand curing agent has a water retention property; in addition, the humic acid self can be used as a soil conditioning agent, is capable of improving fertility of soil and thus is applicable to sand curing application.

Disclosed is a sand stabilizing agent for a high-saline-alkaline-content desert. The sand stabilizing agent is a composition mixed by 5-25 parts of a solution of a nonionic surfactant with the concentration being 0.5-5.0% and 1-8 parts of a sand stabilizing emulsion with the concentration being 30-40%. The sand stabilizing agent is uniformly sprayed on a sandy oil surface having a salt content about 3% to form a mixture, and the mixture forms a high-strength saline-alkaline-resisting solidification layer after subjected to natural air-drying. The sand stabilizing agent has an excellent adhesive property of the high-saline-alkaline-content desert, and is good in wind erosion resistance, and don't cause environment pollution. Evaporation of water in the desert is reduced, and the growth of sandy oil microorganism is not affected. The sand stabilizing agent has advantages of low production cost, simple preparation, and application of mass sand stabilization, and is suitable for preventing and curing desertification of a high-saline-alkaline-content land.

The invention discloses a sand stabilization and water locking net suitable for desertified soil, and belongs to the technical field of soil sand stabilization and water locking. A plurality of lowerembedded water locking bodies and upper anti-raising sand stabilization bodies which are distributed in a staggered manner are arranged at the upper end and the lower end of a sand prevention net, theupper anti-raising sand stabilization bodies achieve an effect of preventing raising and stabilizing sand on the surface layer of the upper end of sandy soil, the lower embedded water locking bodieslocated in the surface layer of the sandy soil are used for naturally locking water under the environment of natural rainfall or manual irrigation, the stored water is guided into the soil through a plurality of capillary drainage pipes, arc-shaped sand grabbing pieces and matching structures of flow guide soil breaking cones and conical seepage-proofing bodies, the balanced and slow wetting on the soil is effectively achieved, through cooperation of embedded rods and the conical seepage-proofing bodies, the seepage-proofing effect is effectively achieved while good sand stabilization is achieved, meanwhile, soil fixing agent permeation bags are arranged in the lower embedded water locking bodies, when water is stored in the lower embedded water locking bodies, soil fixing agents can be released and dispersed into the soil, and the sand stabilization and water locking effects of the soil are further improved.

The invention discloses a preparation method of a curing agent applicable to sandy soil, and belongs to the technical field of environmental protection engineering. The preparation method is characterized by comprising the following steps that 1, sodium carboxy methylcellulose and water are subjected to stirring and dissolving according to the mass ratio of 1:20, and a sodium carboxy methylcellulose solution is obtained; 2, anionic polyacrylamide and water are subjected to stirring and dissolving according to the mass ratio of 1:100, and an anionic polyacrylamide solution is obtained; 3, ferrous chloride and water are subjected to stirring and dissolving according to the mass ratio of 1:50, and a ferrous chloride solution is obtained; 4, under the room temperature condition, the sodium carboxy methylcellulose solution, the anionic polyacrylamide solution and the ferrous chloride solution are sequentially added into water for mixing and prepared into the curing agent. The curing agent has the advantage of being high in adsorption and cementation, inner pores of soil particles can be filled with the curing agent mixed with the sandy soil, the mixture serves as natural cement of the soil, the cured sand particles are not prone to disperse, and the sand fixation and anti-wind capability are high.

The invention provides a sand-fixation agent of humic acid wrapped with a degradable natural macromolecular compound, and a preparation method thereof. The sand-fixation agent is obtained in a mode ofcoating the humic acid with hydrophobic association cationic starch, specifically, cationic starch and a water repellent agent are used as reactive monomers, dissolved in a solvent and conduct a grafting reaction under the action of a basic catalyst to synthesize the hydrophobic association cationic starch, a humic acid salt solution is added into the hydrophobic association cationic starch to obtain coated matter, the coated matter is dried and smashed, and the sand-fixation agent is obtained, wherein the water repellent agent is long-chain organic matter capable of reacting with hydroxyl groups under the basic condition. Cations of the sand-fixation agent and anions of the surfaces of sand grains have electrostatic interaction so that the purpose of sand fixation can be achieved; the cationic starch has the hydrophilic property and the water retention property, and the humic acid also has some hydrophilic functional groups, so that the sand-fixation has the water retention effect; besides, the humic acid further has the capability of improving soil.

The invention relates to a method for achieving sand stabilization of a high-cold region through carex brunnescens. The method comprises the steps that in a first stage, first carex brunnescens living sand barrier queues are planted with the spacing of 10-20 m in the lower middle portions of the two sides of a moving longitudinal dune in the direction perpendicular to prevailing wind; in a second stage, after the longitudinal dune is leveled off through wind erosion, second carex brunnescens living sand barrier queues are planted on a large scale with the spacing of 0.5-1.0 m on a wind erosion flat ground located in the middle, living sand barriers at the left and right sides are integrally connected through the second carex brunnescens living sand barrier queues, and then stable sand stabilization surfaces can be formed. According to the method, a technique of utilizing carex brunnescens for sand stabilization is provided for achieving ecological management and sand stabilization practice of desertified grassland in the high-cold region, the cost for sand prevention and control is reduced, the sand stabilization period is shortened, the sand control effect is improved, a solid foundation is laid for better utilizing resource plants carex brunnescens in the future, and a new research prospect is opened up for ecological restoration of the desertified grassland in the high-cold region.

The invention discloses a sandy soil greening construction method, and belongs to the environment protection engineering technical field; the method comprises the following steps: preparing a curing agent; mixing the curing agent with sandy soil so as to form curing sand; digging deep pits and shallow trenches in the sandy soil, drilling water funnels into the deep pits, filling the curing sand into the deep pits and shallow trenches, planting saplings into the deep pits, allowing sapling roots to extend to the water funnel mouths, and spreading grass seeds in the deep pits and shallow trenches; laying fine sands on the grass seeds, using a mulch film to cover the grass seeds, opening vents on the mulch film, inserting wooden slots around the mulch film, and pouring slurry into the slots so as to form a water fence; watering the grass seeds for maintenance, and irrigating in every 1-2 days until the grass seeds germinate. The method mixes the curing agent with the sandy soil so as to fill inner gaps of the soil particles; the curing sand particles cannot easily disperse and jump, thus contentiously providing sufficient water for plants, and realizing long term windproof, sand solidification, water retention and greening effects.

The invention discloses a sand fixation and tree planting rainwater collection and water holding sand control plate and belongs to the field of desert control facilities. The sand control plate comprises a plate body with the regular triangular cross section. The plate body is laid in a honeycomb structure. A plant hole is formed in the center of the plate body. The upper surface of the plate bodyis provided with rainwater collection ports surrounding the plant hole. The lower portion of each rainwater collection port is connected with a rainwater collection channel arranged obliquely. The rainwater collection channels communicate with a water storage cavity. The bottom of the water storage cavity is provided with water distribution holes penetrating through the lower surface of the platebody. Each fixing rod comprises an inner rod and an outer pipe, wherein the lower end of the outer pipe and the lower end of the inner rod are hinged to a connecting rod and a locating rod correspondingly; the other end of the connecting rod is hinged to the middle of the locating rod. The three side faces of the plate body are all fixedly provided with connecting battens. Each connecting battenis provided with a fixing hole matched with the corresponding fixing rod. Each outer pipe comprises a vertical fixed section and a rotary supporting section which are connected through a rotary shaft.Each inner rod comprises a vertical fixed section and a rotary supporting section which are connected through a rotary shaft. The sand fixation and tree planting rainwater collection and water holding sand control plate can well achieve the wind prevention, sand fixation, rainwater collection and water holding functions. The fixing structure has the three effects of connecting the plate body, fixing the plate body and supporting trees. The application value is high.

The invention provides a wind power generation device. The wind power generation device comprises a horizontal-axis wind power generator, a base and a wing wheel power generation device. The base is fixed to the bottom of a stand column or arranged on the stand column in a sleeved mode. The wing wheel power generation device is placed on the base in a sliding mode and connected to the side wall of the stand column through a connecting rod. The wing wheel power generation device comprises a shell, a second power generator body, a wheel axle, wing wheels and a transmission mechanism, the wheel axle is installed in the shell in a rotating mode, and the two ends of the wheel axle respectively extend out of the shell. The wing wheels are fixedly installed at the two ends of the wheel axle, and the wheel axle and the second power generator body are connected by the transmission mechanism which is used for transmitting power of the wheel axle to the second power generator body. The wind powder generation device is high in power generation efficiency, good in flexibility and capable of moving independently in different directions; because wind power at the high altitude and wind power at the low altitude can be utilized at the same time, the space utilization rate is high; moreover, a manmade air suction protection forest can be formed, and thus the sand stabilization effect is improved.

The invention discloses a preparation method of a degradable sand fixation agent and belongs to the field of sand fixation agents. The method comprises the steps of putting peat soil, glucose and water in a container for uniform mixing and standing, performing spray drying, collecting a dry product for ball-milling and sieving, collecting sieving particles, putting acetone, 1,4-butanediol, L-lactide and dibutyltin dilaurate in a reactor, using carbon dioxide for shielding, raising a temperature for reaction, cooling to a room temperature, collecting a reaction mixture, recovering acetone, collecting residue, putting the residue, methylbenzene, trimethylol propane trimethacrylate, toluene diisocynate, the sieving particles and a catalyst in a reaction kettle for stirring, adding triethanolamine, raising the temperature, continuing stirring, cooling to the room temperature, performing discharge, collecting a discharge product, filtering the discharge product to recover the catalyst, performing rotary evaporation to recover methylbenzene, collecting rotary residue, and uniformly mixing the rotary residue, cholla gum and biological particles to form the degradable sand fixation agent.

The invention discloses a three-dimensional desert sand stabilization net made of straws. The advantages of physical sand stabilization and biological sand stabilization are organically combined, the sand stabilization effect is improved, and the three-dimensional desert sand stabilization net is more environment-friendly. The three-dimensional desert sand stabilization net is composed of single body joints. The single body joints are manufactured by compacting the straws and have certain structural strength, and a three-dimensional net structure can be formed after the single body joints are connected and used for physical sand stabilization. Seeds are arranged in the centers of the single body joints. The single body joints have certain water absorption capacity and can become seed culture soil. As time goes by, the single body joints are gradually degraded, the seeds germinate and grow, and physical sand stabilization is converted into biological sand stabilization.

The invention aims to provide a construction method for a sand barrier with a narrow sand-fixing net, which belongs to the technical field of sand control engineering. In the control of desertification, grid sand barriers, sandbag sand barriers, and grass grid sand barriers have been widely used to fix the mobile desert. The above sand barriers have many shortcomings, and it is difficult to achieve convenient construction, low cost and sand fixation effect. it is good. According to the excellent wind erosion resistance function of the narrow sand-fixing net, a construction line with an interval of 40cm to 120cm is drawn on the desert, and the center line of the flattened narrow sand-fixing net overlaps and is spaced parallel to the construction line. Spread a narrow sand-fixing net at 10cm to 12cm, take the sand-fixing net inserter, and insert the narrow sand-fixing net on the desert along the construction line, so that the narrow sand-fixing net is inserted along the construction line, and the construction is narrow Sand-fixing nets and sand barriers achieve the purpose of convenient construction, low cost and good sand-fixing effect.

The invention discloses a rapid cultivation method of desertified sand land vegetation. The method comprises the steps as follows: a premixed material is prepared; conical cultivating pots are prepared from the premixed material; gauze screens are prepared, and yarns are uniformly spaced on the gauze screens and extend from the gauze screens; conical water bags are prepared; the yarns extend into the conical cultivating pots; the conical water bags fill the conical cultivating pots, and the yarns are compressed; the conical cultivating pots are filled with cultivating soil, and then openings of the conical cultivating pots are sealed with pug; the conical cultivating pots fixed on the gauze screens are dried; the gauze screens fixedly provided with the conical cultivating pots are spread in rows on barren earth surface; after 80-110 days, the cultivating soil is uniformly spread on the gauze screens; and planting holes are dug among the gauze screens in rows, and drought-control shrubs are planted in the planting holes. With the adoption of the rapid cultivation method of the desertified sand land vegetation, the vegetation with a higher cover degree can be formed on the target earth surface within one growing season, a satisfied vegetation cover effect is realized, the survival rate of the shrubs is high, the forest establishment time is short, and the forest establishment effect is good.

The invention discloses a desert mechanized planting method which comprises the following steps: selecting a planting area, removing sand on the surface layer of the planting area, and laying a waterproof layer; arranging a supporting mechanism in the planting area, and fixing sand in the planting area; laying a water supply pipe, fixing the water supply pipe to the supporting mechanism to form a net-shaped water supply pipeline; arranging a plurality of ground springs on the waterproof layer, and forming a communicating structure by the ground springs and the water supply pipeline; backfilling planting soil, burying the supporting mechanism and the water supply pipe in the planting soil, and forming a barrier-free planting layer with the flat earth surface; and mechanically planting and/or harvesting crops or commercial crops in the planting area with supporting force. According to the planting area formed by the technical scheme, mechanical planting/harvesting can be achieved in the season suitable for planting, the planting layer is kept in a humid state and a dormant state when the sand storm is large and the temperature is low in winter and the desert area is not suitable for planting, and the effects of wind prevention and sand fixation are achieved.