37results about How to "Prevent wind erosion" patented technology

The present invention relates to botanical repairing technology of polluted environment, and is especially the method of utilizing super enriching plant in repairing heavy metal contaminated soil. The method includes planting castor in lead contaminated soil for the root system of castor to absorb lead from soil and removing the castor in blooming stage or maturing stage from the contaminated soil. The said method can eliminate lead from the contaminated soil to repair lead contaminated soil without affecting the physical and chemical properties, and has low power consumption, low cost, easy operation, no secondary pollution and other advantages.

The invention discloses a method for repairing lead and zinc polluted soil by utilizing accumulator plants-ryegrass and pig manure. The method comprises the following steps of: mixing the pig manure with the lead and zinc polluted soil; planting the ryegrass; fully uniformly mixing the pig manure with surface layer polluted soil under the condition that the applied concentration of the pig manure is 20-80g/kg; absorbing lead and zinc in the lead and zinc polluted soil through the root parts of the ryegrass; transferring the lead and the zinc to the overground parts of the ryegrass; when the overground parts of the plants are mature and can be harvested, moving away the plants from the polluted soil so as to achieve the purpose of removing lead and zinc pollution from the soil. As the ryegrass is good in regeneration capability and high in growth speed and can be repeatedly harvested without complex management, the energy consumption is low, the operability is good, the ecological safety is high, the environmental physicochemical property cannot be destroyed, the secondary pollution cannot be caused, a soil structure cannot be destroyed and polluted, the fertility improvement capability cannot be influenced, and the repair expense is further reduced.

A construction method for subgrade filling of general-speed railways in desert areas, which is characterized in that: ①, surface soil is removed, and the base is processed by impact rolling 24 times to complete the base treatment; ②, the part below the surface of the base bed is filled with silt and fine sand Lay a layer of two-way geogrid with a tensile strength of 30KN/m every vertical height of 0.6m in the sand layer, and lay a layer of TGDG260 one-way geogrid every 1.8m when the embankment filling height is greater than 12m; ③, Lay 0.2 m thick medium-coarse sand, and a layer of composite geomembrane is sandwiched in the medium-coarse sand; ④, the surface layer of the foundation bed is filled with 0.6m thick Group A soil; ⑤, the subgrade slope is protected by shrub grids, arranged in a square The distance is 1m. The beneficial effect of the present invention is: it mainly solves the technical problem of how to carry out reasonable filling construction under the condition of lack of earthwork in the desert area and severe wind erosion of the side slope; The initial compaction and multiple compaction techniques of road rollers are used as an auxiliary means of quality control to ensure the quality of roadbed filling construction.

The invention relates to plant repairing technology of cadmium polluted soil, in particular to a method for repairing cadmium polluted soil by utilizing enrichment plant bidens tripartita. Bidens tripartita is planted on soil containing pollutant cadmium, the root system of bidens tripartita absorbs cadmium in polluted soil and transfers the cadmium to the overground part organ, the overground part organ is taken away from the polluted soil when the overground part organ of the plant grows to biomass liveweight maximum, thus realizing the aim of removing pollutant cadmium in soil. The invention utilizes enrichment plant bidens tripartita to treat cadmium polluted soil and has the advantages of low cost, strong operability, no destroy on soil physicochemical properties, no arising of secondary pollution and good effect on preventing wind erosion and water erosion of polluted soil.

The invention relates to a method for controlling wind erosion of nursery stock bases in desert areas. The method relates to a nursery stock sand storm protection cover which comprises a cover body, a cover edge and a fixed drill rod, wherein the cover body is shaped like a round table; the cover edge is arranged at the bottom of the cover body; and the fixed drill rod is inserted into a fixed hole on the cover edge and then fixed in soil on the earth surface. After a nursery stock is planted in a desert area, the nursery stock sand storm protection cover is taken, and the cover body and a gap on the side wall of the cover edge are slightly unfolded to horizontally move toward the nursery stock; branches of the nursery stock are collapsed and pass through the gap; the cover body is arranged around the nursery stock; the protection cover is rotated to ensure that the gap on the protection cover is toward the downwind direction of the local predominant wind direction; and along with the growth of the nursery stock, when the sand storm protection cover limits the growth of the trunk, the cover body and the gap on the side wall of the cover edge are unfolded and then the protection cover is taken off. The method can be used for the forestation in desert areas with the advantages of improving the micro environment of nursery stock bases, preventing the wind erosion of the soil at the roots of the newly planted seedlings and improving the nursery stock survival rate, has a wide application range and can be widely applied to the construction projects of ecological forests and economic forests.

The invention provides a self-adjusting type permafrost protecting device. The protecting device comprises a support and a fiber plate, wherein a solar cell panel and a cover plate are mounted on the support; a driving motor controlled by an automation controller is mounted on the cover plate; two sets of telescopic guide rails are arranged on each of the upper surface and the lower surface of the cover plate; the driving motor drives the four sets of telescopic guide rails to extend or retract simultaneously; sun shielding plates are arranged on the telescopic guide rails; and the automation controller is used for setting an upper limit valve and a lower limit value of the temperature in advance, detecting the environment temperature, comparing a detected environment temperature value with the preset upper limit valve and the preset lower limit value of the temperature and controlling the driving motor according to the detected environment temperature so as to enable the telescopic guide rails to extend or retract. By the aid of the protecting device, the sun shielding plates can be extended or retracted according to the environment temperature, so that the heat transmitted to side slopes can be reduced, and excessive evaporation of side slope moisture can be prevented; side slope wind erosion can be prevented; and heat and moisture replenishment required by normal growth of side slope plants can be guaranteed. In addition, the protecting device can be recycled.

A movable sand deposition sand barrier comprises a plurality of sand barrier plates, wherein the sand barrier plates are arranged along a sand deposition ribbon sand ridge line in a connected mode, and every two adjacent sand barrier plates are connected in a butt joint mode or a lap joint mode through a sand barrier connecting clamping pin fixing assembly. The edge of the lower end of each sand barrier plate is provided with a double-edged knife face, and the upper portion of each sand barrier plate is provided with a plurality of sets of vent holes. Each sand barrier connecting clamping pin fixing assembly comprises two connecting plates and two bolts; the left end and the right end of each connecting plate are provided with bolt through holes, every two corresponding connecting plates are arranged on the front surface and the back surface of the connecting end of every two adjacent sand barrier plates, and the bolts penetrate through the bolt through holes and the vent holes to fixedly connect every two adjacent sand barrier plates. The movable sand deposition sand barrier is mainly used for depositing drift sand and promoting a sand deposition ribbon or a sand dune to be higher and larger. When the blocked or intercepted sand is deposited to be high enough so that the sand deposition sand barrier can not effectively prevent the deposited drift sand or a sand ridge line from shifting, the sand barrier can be vertically pulled upwards or pulled out to be arranged on a new sand ridge line again to promote the sand deposition ribbon to be higher.

The invention discloses an early-maturing and dense-planting cultivation method for fresh maize. The method includes the following steps that seed cultivation is performed, wherein heat preservation seedling cultivation is performed from mid-late February to early March in early spring; transplanting is conducted when each seedling grows 3-5 leaves, and the seedlings are transplanted in the groundfor heat preservation; planting is conducted, the transplanted seedlings are planted in holes, holes are formed at planting points, at least three seedlings are placed in each hole, the holes are filled with fertilizers before transplanting, and then full irrigation is performed; thermal insulation tools are removed gradually when the temperature rises due to environment warming; secondary seedling cultivation is performed in mid-early June, the seedling cultivation mode and the planting mode are same as these in spring; transplanting starts after preceding maize is harvested. According to the method, the maize can be planted in two seasons one year, meanwhile the centralized selling time of the maize is staggered, maize selling in a market can be advanced or delayed, lagging sales are avoided, and meanwhile the economic benefits are greatly improved. Meanwhile, the dense-planting in thin-hole technology is implemented, the labor and cost of transplanting are reduced.

The invention discloses a desert road slope vegetation soil fixation system and a soil fixation method.The soil fixation system is formed by splicing a plurality of soil fixation modules, each soil fixation module comprises a grating soil fixation plate with a planting opening in the center and a soil fixation basket fixed to the bottom of the grating soil fixation plate, and the soil fixation system further comprises a fixing pile; and the fixing piles are fixed on the fixing plates on the edge of the system. Due to the arrangement of the grating soil fixing plates, the soil fixing baskets and the plants, the stability of the roadbed can be protected, the effects of wind prevention and sand fixation can be achieved, fertilizer and microorganisms can be provided for soil through nutrient soil, the local environment of the soil is improved, and the plants can restore the ecological environment. Therefore, the desert road maintenance method is a desert road maintenance technology integrating multiple functions of preventing wind erosion, improving local soil environment, recovering vegetation and the like.

The invention discloses an intelligent sound-removing and noise-reducing diesel generating set, and belongs to the field of generating sets. The intelligent sound-removing and noise-reducing diesel generating set comprises a bottom plate, wherein an oil tank is bolted to the left side of the top of the bottom plate, an engine body is fixedly connected to the right side of the oil tank, the bottom of the engine body is bolted to the top of the bottom plate, and an electric ball is fixedly connected to the right side of the engine body. The bottom of the electric ball is bolted to the top of the bottom plate, the top of the electric ball is bolted to a controller body, and the two sides of the bottom of the bottom plate are both fixedly connected with damping devices. By arranging a moving device, the device is convenient to move, meanwhile, damping is conducted on the device, and noise is reduced. By arranging a monitoring device, the sound volume of the outer side of the device can be monitored, and a worker can conveniently check and adjust the device in time. By arranging a mute box, the device can absorb and block noise generated by an engine unit, and therefore pollution of the noise to the working environment can be reduced.

The invention discloses a sand fixation control and planting integrated method for sand land. The method includes: spreading a sand-fixing agent to the surface of the sand land, planting plants on thesand land where the sand-fixing agent is spread to form a grid sand-fixing plant zone, and planting two rows of different crops in grids; planting shrubs or perennial herbs in the prevailing wind direction of one side of the sand-fixing plant zone. By adoption of the sand-fixing agent, sand loss is prevented; by planting of the crops in the grid windbreak sand-fixing plant zone, the vegetation coverage of the sand-fixing plant zone can be increased, effects of wind speed reduction and effective prevention of sand flowing are achieved, and accordingly crop damage caused by wind erosion or sandaccumulation can be prevented.