76results about How to "Reduce soil erosion" patented technology

The invention relates to the technical field of ecological slope protection and in particular to a semi-arid area ecological slope protection structure and a construction method thereof. The semi-arid area ecological slope protection structure comprises a slope top, a slope surface and a slope bottom, wherein a plurality of water collection grooves are formed in the edge of the slope top; a water diversion groove which can carry out diversion to the slope bottom is formed in the side surface of each water collection groove; a body of each water collection groove is formed by stacking biological stacking bags, a bentonite waterproof blanket with the thickness to be 5-10mm wraps the outer layer of the body of each water collection groove; the slope surface is composed of a planting layer and a water retention layer arranged under the planting layer; the water collection grooves are communicated with the water retention layer of the slope surface through multiple strands of capillary pipe water diversion fibers; a reservoir is formed in the slope bottom; and a self sucking pump is arranged in the reservoir and pours collected seeped water into the water collection grooves through return pipes. When collecting collected water on the slope top and flowing water on the slope surface and constructing and designing the slope surface, the semi-arid area ecological slope protection structure realizes water retention and irrigation of roots of green plants on the slope surface by virtue of the water diversion capacity of the capillary pipe water diversion fibers.

The present invention provides a method of recycling a plastic thereby forming a narrow spectrum of hydrocarbons having from 4 to 14 carbon atoms that can be directly used as gasoline without additional processing or refining. The method includes the step of feeding the plastic, selected from the group of polyethylene, polypropylene, polystyrene, and combinations thereof, into a heated vessel for melting. The method also includes the step of decomposing the plastic at a temperature of from 400° C. to 500° C. in the presence of a metallocene catalyst and a zeolitic catalyst thereby forming the hydrocarbons having from 4 to 14 carbon atoms. The metallocene catalyst includes dichlorobis(2-methylindenyl)zirconium (IV). The zeolitic catalyst includes ammonium Y zeolite and has a pore size of from 1 to 4 Angstroms.

The invention provides an ecological restoration method of a slope. The ecological restoration method of the slope comprises the steps of smoothing the slope surface, paving geotechnical cloth on the smoothed slope surface and fixing the geotechnical cloth by use of an anchor rod, paving a honeycomb restraint system on the geotechnical cloth and fixing the honeycomb restraint system by use of an anchor rod, filling a plant growth substrate, paving a lawn nursery strip on the honeycomb restraint system, and nursing plants after paving is completed, wherein the honeycomb restraint system is composed of cells and reinforced belts passing through the cells; the lawn nursery strip comprises a geonet, setting paper, grass seeds, a slow release fertilizer and the setting paper, all of which are orderly paved from top to bottom; the ecological restoration method of the slope has the advantages that as the honeycomb restraint system is paved on the slope, the service life of the work can be greatly increased, the maintenance cost is reduced and the construction period is shortened, and the honeycomb restraint system is good in water permeability and moisture retention property, and capable of protecting soil from erosion by rainwater, and conserving and retaining soil; the method is short in construction period, convenient for maintenance, low in cost, capable of reinforcing the slope while restoring the ecology of the slope, and suitable for the soft foundation slopes of various gradients.

Carbide slag and crushed common carbon material are mixed to obtain mixed material, and the mixture is roasted in furnace at 853-1273 deg.c for 20-50 min to obtain high calcium-carbon mixture with calcium oxide and fixed carbon as main components. The high calcium-carbon mixture is used as main material to produce calcium carbide product through reaction in electric furnace at 2121 K. The high calcium-carbon mixture is controlled to have a calcium oxide / carbon weight ratio of 61 to 39 through adding lime or coke. The present invention utilizes waste in producing calcium carbide product andhas the advantages of reducing environmental pollution, etc.

A method for applying a soil stabilizer, to soil wherein the soil stabilizer is intermixed, impregnated, and / or applied to solid carriers.

The invention aims at the defects of the conventional winter tea garden management technology, and provides a lightened and simplified sowing technology for winter green manure by adopting high stubble of summer green manure Chafei No.1 for tea garden planting. On one hand, cutting or tillage of the summer green manure Chafei No.1 is not required, and on the other hand, soil tillage for sowing in winter can be avoided. By means of the method, the demanded labor quantity and the labor intensity for planting the winter green manure are substantially reduced, and the labor efficiency is improved; meanwhile, influence of winding of creeping type green manure on the growth of tea trees is avoided; the method for interplanting the winter green manure in a tea garden can be widely applied to production practice of interplanting in the tea garden.

The invention relates to the field of plantation of sand-binding plants, in particular to a planting design method for planting a sand-binding plant community. The method is mainly applied to the eastern region of Inner Mongolia and serious desertification areas in the west of Liaoning province and Jilin province in China. In the design of the plant community, a woody plant Caragana microphylla, herbaceos perennial wheatgrass, dester wormwood, garcinia bark and Panicum miliaceum mubarak hassan shami are adopted; and in the design of the sand-binding plant community, the planting of Caragana microphylla is taken as a main framework, and the herbaceos perennial wheatgrass, the dester wormwood, the garcinia bark and the Panicum miliaceum mubarak hassan shami are planted so as to form the sand-binding plant community. By the method, the problems of serious waste of sand-binding plant seeds and the like in the prior art are solved; the better sand-binding effect is achieved by utilizing the reasonable combination of sand-binding plants; a method for planting plant communities is provided for the modern wind protection and sand fixation; and the method can be widely applied to the sand control and plant slope reinforcement work of highways and railways in northern areas in China.

The invention discloses a preparation method of a soil stabilizer for remediation of heavy metal contamination, and belongs to the technical field of preparation of soil stabilizers. The preparation method includes: grinding and sieving sepiolite prior to being mixed with and soaked in hydrochloric acid, then drying flushed filter residue to prepare acid-modified sepiolite, then preparing banana skin into granules prior to soaking in sodium hydroxide solution, flushing and drying filter residue soaked and filtered, then roasting obtained banana skin activated carbon with a muffle furnace, and putting a mixture prepared by stirring acid-modified sepiolite, banana skin activated carbon, red mud, hydroxyapatite, aluminium oxide powder and cow dung together with perlite powder, sodium carbonate, zeolite, sodium alginate, sodium methylsiliconate, hydroxy-benzenesulfonic acid and sodium dodecyl benzene sulfonate into a dispersion kettle for mixing to obtain the soil stabilizer. The soil stabilizer has strong adsorption capacity in heavy metals in soil, has repairing and solidification effect in soil, and has broad market prospect.

The invention provides a method for restoring tailings pond through cooperation of Cassia alata and charcoal, and belongs to the technical field of mining wasteland ecological restoration. The methodcomprises the steps that 1, charcoal is added in tailings pond soil to prepare mixed tailings soil for balance; and 2, Cassia alata plants are planted in the mixed tailings soil. The Cassia alata andthe charcoal are cooperated to for tailings reclamation, charcoal is comprehensively utilized for improving the tailings matrix and reducing the toxic effect of heavy metal on plants, the biological nitrogen fixation effect of the Cassia alata is achieved, adverse effects of tailings acid, toxicity and barren on plant reclamation are relieved, improvement of physical and chemical properties of soil is promoted, and the tailings restoring cost is reduced.

The invention provides a non-point source pollution prevention and control cultivation method for an osmanthus fragrans nursery garden. The method includes the steps that soil preparation and fertilization are conducted, osmanthus fragrans interlacing planting is conducted, oxalis corniculata is planted between every two rows of osmanthus fragranss, cradling is conducted on the oxalis corniculata according to a certain method, the cradled oxalis corniculata covers the periphery of the trunk of the osmanthus fragrans, nursery garden fertilization is conducted, irrigation and drainage, plant diseases and insect pest prevention and treatment and trimming are conducted according to a normal osmanthus fragrans cultivation method, and the on-point source pollution prevention and control cultivation of the osmanthus fragrans nursery garden is finished. According to the method, a three-dimensional cultivation method that the oxalis corniculata is planted in the osmanthus fragrans nursery garden in an interplanting mode is adopted, the soil structure of the osmanthus fragrans nursery garden can be changed effectively, the N, P and water and soil loss can be reduced, the soil organic matter and nutrient content can be increased effectively, the nursery garden soil carbon pool cultivation cycle is shortened, the ecological diversity of the nursery garden is increased, the pollution to the environment is reduced, the ecological environment of the nursery garden is improved, and operation is easy.

Disclosed is mobile mechanical xeriscape gravel cleaner which is delivered to the site of the xeriscaping to be cleaned by a wheel / axle assembly, leveled with adjustable jack stands mounted on the metal frame. Xeriscape material to be cleaned is collected and deposited in a hopper with slide plate to control flow of material into the receiving chamber. Using an external power system, the auger / screener device rotation begins and picks up and carries forward the material, passing through the transition plate to the auger / cleaner chamber where foreign material passes through the screen. The cleaned material proceeds to the discharge chamber where it is collected and returned to the original xeriscaped site. The mobile mechanical xeriscape gravel cleaner can clean xeriscape gravel at a lower cost, with improved quality and a higher rate of speed than was previously possible, with significantly reduced burden to the ecosystem.

The present invention provides transgenic cover crop plants which after harvest degrade the hemicellulose and cellulose therein to fermentable sugars which can further be fermented to ethanol or other products. In particular, the transgenic plants comprise cellulase, hemicellulase and optionally ligninase genes from microbes operably linked to a DNA encoding a signal peptide which targets the fusion polypeptide produced therefrom to an organelle of the plant, in particular, the chloroplasts. When the transgenic plants are harvested, the plants are ground to release the hemicellulase and cellulase which then degrade the hemicellulose and cellulose of the transgenic plants to produce the fermentable sugars.

A method of recycling a plastic includes decomposing the plastic in the presence of a catalyst to form hydrocarbons. The catalyst includes a porous support having an exterior surface and defining at least one pore therein. The catalyst also includes a depolymerization catalyst component disposed on the exterior surface of the porous support for depolymerizing the plastic. The depolymerization catalyst component includes a Ziegler-Natta catalyst, a Group IIA oxide catalyst, or a combination thereof. The catalyst further includes a reducing catalyst component disposed in the at least one pore.

An apparatus for soil preparation where residual crop matter is present in the field comprising a machine having a set of discs followed by a plurality of harrow modules, the harrow module utilizing a plurality of groups of tines arranged on a longitudinal axis for rotation around the center of a shaft designed for ground working and a spring in the center of the longitudinal shaft is designed to keep constant tension on the tines for minimal wear while biased toward the soil by a pivot mechanism is designed to reduce bounce.

The invention discloses a method for preventing and controlling water and soil loss of a soil pile in a mine abandoned land in a semi-arid area. The method comprises the following steps: step S1: soilis laid and compacted on a slope and a platform of the soil pile of the mine abandoned land; step S2: a plurality of rows of ecological bags are arranged on the slope of each step from top to bottomalong the height of the slope, and perennial shrubs and perennial herbs suitable for local growth environment are intercropped on the slope and the platform of the adjacent two rows of ecological bags; step S3: a degradable sand-proof net is used to cover the bare land and the platform on the slope surface; step S4: vegetation management is carried out regularly. Herbs and shrubs are respectivelyplanted on the slope and the platform of the soil pile in mine abandoned land. The rows of ecological bags are arranged on the slopes from top to bottom, which is conducive to soil and water conservation of the soil pile in mine abandoned land in semi-arid area.

The invention relates to a method for establishing artificial mixed sowing grassland of a slope of a loess plateau. When seeds are sown in the area of the loess plateau, leguminous grass seeds and gramineous forage grass seeds are sown in a mixed manner, and alfalfa seeds and awnless brome seeds are sown in the mixed manner according to the proportion of 0.3:0.7; and during sowing of the mixed sowing grassland, the suitable fertilizing amount includes that nitrogenous fertilizers (pure N) are 85kg / hm(2), potash fertilizers (K2O) are 110kg / hm(2), and phosphatic fertilizers (P2O5) are 70kg / hm2. By reasonably matching leguminous grass and gramineous forage grass, the artificial mixed sowing grassland with the alfalfa and the awnless brome seeds is formed, grassland vegetations with different types are combined with each other, so that soil erosion of waste mountains of a loess area can be effectively reduced, the richness degree of the species of the grassland is increased, and the natural renewability of the grass is improved.

The present invention is mainly aimed at providing a low-cost, long-acting and environment-protecting combined technology for restoring stone quarry slope wall vegetation, which is characterized by that it uses ecological principle and artificial auxiliary method to fix the plants on the stone wall. Said method is simple, and good in operability.

The invention discloses an intelligent vertical greening planting box. The intelligent vertical greening planting box comprises a planting box body and a planting pot, wherein the planting box body is a box body formed by a front plate, a rear plate, a left side plate, a right side plate, a cover plate and a base plate and is also a supporting body for the planting pot; a control circuit is arranged in the planting box body; a voice module, a display module and a time module are also arranged on the control circuit; the planting pot is arranged in a mounting slotted hole of the planting box body, the planting pot is connected with the planting box body by virtue of a planting pot sliding chute and a planting pot sliding rail, and the planting pot can be pushed into or pulled out of the planting box body by virtue of the planting pot sliding chute and the planting pot sliding rail. By adopting the technical scheme, the defects of the prior art are overcome, plants can be replaced at any time according to landscape requirements, intelligent control on plant drop irrigation and illumination is realized, convenience and high efficiency are realized, soil erosion is prevented, and landscape maintaining time is long.

The invention discloses a method for preventing and controlling agricultural non-point source pollution in hilly and mountainous areas by utilizing nitrogen and phosphorus intercepting ditches. This method is based on the distribution of farmland in hilly and mountainous areas, and according to the slope and elevation of the farmland area, build multi-level interception ditches. The horizontal distance between the two levels of interception ditches is 50 meters. The bottom of the interception ditch is a nitrogen and phosphorus interception layer with a thickness of 0.5 meters, and it is suppressed with a covering soil with a thickness of 0.2 meters. The nitrogen and phosphorus interception layer is formed by mixing straw, sawdust and soil with a mass ratio of 1:3:1. This method can Remove 30% of the nitrogen content and 25% of the phosphorus content in agricultural non-point source pollution in hilly and mountainous areas, effectively control the non-point source pollution of farmland in hilly areas, and can slow down the soil and water loss of farmland in hilly and mountainous areas. Years can be used as farmland fertilizer, which has good environmental and economic benefits.

An aqueous composition, a solid composition and method for producing the solid composition are disclosed. The aqueous and solid compositions may be used in a number of applications such as in processes to recover oil from a production well containing an oil slug and in processes to clarify aqueous slurries containing sedimentation. The compositions comprise a surfactant, a pre-gelatinized starch, an inorganic salt, an oil and a polymer. The method of manufacturing the solid composition includes exposing the aqueous composition to temperatures around 0 degrees F. A solid block stable at ambient temperatures is formed along with a liquid phase that may be separated from the solid block. Dispersing the solid composition in water further enhances flow stability.

It relates to an intermittent drip-irrigating strap with a variety of structures, which could realize the circulation of the water diversion and release. There are three kinds of water diversion modes in the invention, gravitation water diversion, water storage Vesicae Cubage water diversion and main pipe segment water diversion. An intermittent drip irrigating strap with gravitation water diversion is placed on the wavy ground or material, the water outlet is at the bottom, the delivery pipe is controlled by a pipe-like valve. For an intermittent drip-irrigating strap with water storage Vesicae Cubage water diversion, the water intake pipe and the water delivery pipe are controlled by pipe-like valves. For an intermittent drip-irrigating strap with main pipe segment water diversion, the water delivery pipe in each section is controlled by pipe-like valves. The pipe-like valve comprises a valve jacket and a valve core in the jacket. The valve jacket is a plastic film pipe having a pair of water inlet and water outlet at intervals. The valve core is an active sealing member, including three kinds, rubber, plastic film and plastic membrane.

The invention provides a method of repairing lead-polluted alkaline soil in a drought area by reinforcing arbors with a chelating agent. The method includes steps of: planting anti-drought, lead-resistant and lead-enriching arbors in a drought / semi-drought lead-polluted alkaline soil land, and applying the chelating agent to soil during growth season of the arbors, wherein applying quantity of thechelating agent is 0.05-0.36% by mass of air-dried soil; the chelating agent is a green chelating agent selected from amino polycarboxylic acids or low-molecular organic acids and can repair lead-polluted soil to depth of 30-120 cm. In the invention, the chelating agent is used for reinforcing arbors for repairing lead-polluted alkaline soil, where by adding the chelating agent at certain quantity, lead content of the arbors growing on the lead-polluted alkaline soil in the drought area can be increased, so that excessive diffusion of the heavy metal, lead, to environment is prevented. The method can durably repair the lead-polluted alkaline soil and the arbors can be processed into wood material, thus gaining economic value.

Compositions, admixtures and methods for resisting erosion such as by wind and / or water are provided. The compositions comprise an emulsion, dispersion or suspension of a hydrophilic polymer. In preferred embodiments, the polymer comprises branched anionic polyacrylamide. The composition may be combined with water and optionally a matrix material, to form an admixture that is applied to the soil or other material needing erosion resistance. The matrix material preferably comprises cellulose and / or mulch. The methods comprise providing or forming an aqueous mixture of the compositions and applying them to an area of land or material sought to be provided with erosion resistance.

The invention provides a method for reclaiming desert or desertified soil through utilizing sludge. The method comprises the following steps: digging a ditch or a pit region: digging the ditch or the pit region by guaranteeing that the depth is smaller than or equal to 3m, the width is 3m-5m and the coverage area is 10%-40% of a needed reclaiming area; backfilling the sludge: backfilling the sludge into the ditch or the pit region to form a sludge backfilling region, wherein the backfilling depth of the sludge is smaller than or equal to 3m; covering sandy soil: covering the sandy soil on the surface of the sludge, wherein the thickness of a covering layer is 10cm-30cm; and planting plants: planting the plants above and at the periphery of the sludge backfilling region to form a protection forest planting region, and enabling roots of the plants to extend toward the sludge backfilling region, so as to realize soil reclamation. The method provided by the invention adopts sludge backfilling and the desertified soil is treated by wastes; the sludge has a good water holding capacity and a good fertilizer effect; and measures that the sandy oil covers a sludge layer, suitable grass is planted on the sludge backfilling region, soil improvement is carried on the sandy soil covering layer and a surface layer of a region which is not backfilled, and the slope of the region which is not backfilled is adjusted are adopted, so that the effect of alleviating water loss and soil erosion is realized.

The invention relates to a comprehensive treatment structure for ecological protection of a river channel landslide prevention slope and a construction method of the comprehensive treatment structure.The comprehensive treatment structure for protection comprises a buffer filter belt arranged at the edge of a river channel embankment, a protective net layer laid on the river channel slope surface,a concrete protective wall poured on the river channel slope surface, an ecological planting groove fixed to the bottom of the concrete protective wall and a reinforcing net connected to the lower portion of the ecological planting groove in a pressed mode and extending to the bottom of a riverbed, wherein a planting tunnel is formed in the river channel embankment, the buffer filter belt comprises ecological geotechnical cloth laid in the planting tunnel and a planting soil layer, the protective net layer is in lap joint with the ecological geotechnical cloth, and an anchoring rod is anchored on the river channel slope surface; aquatic purification plants are planted in the ecological planting groove; and reinforcing stone blocks are loaded in the reinforcing net to form a reinforcing layer. Through the treatment structure, comprehensive protection of the river channel embankment is achieved, and the phenomena of landslide and water and soil loss are reduced.

The invention relates to the technical field of garden greening, in particular to a vertical greening construction method of a mountain rock slope lattice beam. The method comprises the following steps of (1) structural deepening design and three-dimensional modeling; (2) slope treatment; (3) backfilling of ecological bags; (4) suspension of meshes; (5) spraying of granular soil; (6) maintenance management. Through the structural deepening design and three-dimensional modeling, an ecological environment model meeting the requirements is designed in advance. In combination with a lattice beam supporting mode, the ecological bags, the galvanized steel wire meshes, steel wire ropes and supporting anchor rods are combined to effectively stabilize soil on a vertical surface in order to reduce soil erosion. Proper grass seeds and suitable soil are selected for nursing in a pattern combining three regular items with one prevention item, wherein the three regular items include regular sprayingof compound fertilizer, regular sprinkling irrigation nursing and regular pruning, the prevention item refers to prevention and control of diseases and pests, and the pattern is adopted for ensuringthe effects of a greening surface. The lattice beam is stable in vertical greening structure, resistant to impact, high in urban greening rate, excellent in noise reflection and smoke adsorption effect, attractive in floristic pattern and capable of being flexibly replaced.

A building suitable for special terrains comprises a house main body and terrace. The building is characterized in that the house main body is square shape; the top of the house main body is provided with a top water proof layer; the back of the house main body is provided with a back water proof layer; the two sides and the front of the house main body are provided with U-shaped waterproof skirting. The building is suitable for the residence of personnel doing field scientific research; through the well-designed waterproof design, the indoor environment is more dry and clean which is beneficial for the life and work of researchers; the service life of the house is long which reduce the cost of scientific research; besides, the house has little influence on environment; and the water and soil loss of building site are greatly reduced by building arbor and herbaceous plants.