38results about How to "Protect the ecosystem" patented technology

A biocontrol strain KMXU28 for controlling paris rhizome root rot and a biocontrol agent thereof belong to the technical field of bio-pesticides. The accession number of strain KMXU28 is CGMCC NO. 6594. The biocontrol agent is obtained by the following steps: transplanting strain KMXU28 into a tube for activation by using one-inoculating loop of the strain to culture at 28 DEG C for 48 hours; transplanting activated bacterial lawn into 600ml LB culture medium contained in a 1000ml conical flask to culture under the conditions of 120 r / min, 28 DEG C for 72 hours to obtain a fermentation broth; incubating the fermentation broth in LB medium in a seed tank for fermentation culture at a ratio of 1:200, the temperature of the seed tank being 30-32 DEG C, and obtaining strain used for fermentation after fermentation for 16-18 hours; incubating the strain used for fermentation in a fermentation tank at a ratio of 1:20 for fermentation culture at a temperature of 30-32 DEG C for 72-96 hours, and saving the obtained material as a biocontrol bacteria solution; and centrifuging the biocontrol bacteria solution at 5000rpm for 6 min, to prepare an active bacterial agent with a preservation solution at 1:50 (g / ml). The biocontrol agent of the invention is low in cost, non-toxic and free of pollution, and can effectively prevent the successive cropping obstacle of soil-borne diseases of paris rhizome, thus improving harvest of paris rhizome.

An apparatus and method for producing and storing ice on the sea using sub-zero cold air of the winter season, to achieve an earlier freezing period, and increasing the area and thickness of the ice layer, to suppress the melting of ice sheets and glaciers and suppress and overcome global warming as well as its side effects. The apparatus and method involve compressing cold air; injecting the compressed cold air into a storage tank; supercooling water using the injected cold air; forming an ice layer by misting the supercooled water into the sea; and increasing a thickness of the ice layer by additionally misting water onto the ice layer formed at water level.

The invention discloses an ecological remediation structure enhancing phreatic zone exchanging and belongs to the field of ecological remediation structures preventing river bank erosion. The whole ecological remediation structure is a W-shaped rock block weir and is composed of protection arms, an inner arm and dam abutments. The inner arm is arranged at the center of a river way, the protectionarms are arranged on the two sides of the river way and connected with the dam abutments, and the dam abutments on the two sides perpendicularly stretch into river banks. The ecological remediation structure has multiple functions of enhancing exchanging between surface water and underground water, enhancing the purification effect of a phreatic zone, protecting a river way ecological system, preventing river bank erosion and the like. Compared with a traditional river channel improvement method, the ecological remediation structure has the beneficial effects that a river way surface water andgroundwater system is comprehensively considered, and the purification effect of the river way phreatic zone is given play to; and the cost is low, needed manpower is small, construction is easy, theecological remediation function can be maintained for a long term, and the application prospects in the fields of river way ecological remediation, river bank protection and the like are very wide.

The invention belongs to the field of mines, and relates to a riverbed seepage-proof governing structure. According to the riverbed seepage-proof governing structure, a quaternary seepage-proof structure is arranged on a disturbed riverbed, and the quaternary seepage-proof structure is divided into four layers from bottom to top, namely a riverbed reinforcing layer, a seepage-proof cushion layer, a seepage-proof layer and a seepage-proof protective layer are sequentially laid. According to the design, engineering geology, environment characteristics and technical features of a composite geo-membrane are fully considered, and therefore the effect of the disturbed riverbed seepage-proof governing is enabled to good, and governing cost is lower.

The invention discloses a straw fiber stone composite ecological slope protection. The ecological slope protection is laid on the inclined bank slopes on both sides of the river. The ecological slope protection includes a plurality of straw fiber stone units assembled and fixed together. The straw fiber stone unit includes Concrete pouring main block with a rectangular parallelepiped structure and a shell-shaped surface layer made of straw fiber that is fixed on the main block and has the same shape as the main block; the invention not only has a simple structure and is environmentally friendly, but also can protect the banks on both sides of the river. It can prevent soil erosion when impacted by water flow, and it also has the functions of stabilizing vegetation and facilitating the growth of vegetation, and can protect the bank slope from the erosion of rainwater without affecting the water storage of the bank slope, thereby protecting the ecological system of the river.

The invention discloses a bacterial strain with antagonistic effect on Sclerotinia sclerotiorum of Chinese cabbage. , Perinatal flagella. Gram-positive, spores 0.7-0.9 × 1.1-1.4 microns, oval. The surface of the colony is rough and opaque, white or slightly yellow, and it was slightly yellow after 72 hours of shaking bacteria in potato glucose liquid medium; it was preserved in the China Center for Type Culture Collection on April 26, 2018, and the preservation number is CCTCC NO: M 2018236 . The strain of the invention is simple to manufacture, low in cost, non-toxic, harmless and free from environmental pollution, and is beneficial to safely and effectively inhibiting the growth of Chinese cabbage Sclerotinia sclerotiorum mycelium, and is beneficial to the green cultivation of Chinese cabbage, and protects farmland ecosystems.

The invention discloses an AM mycorrhizal fungus MW21 and its biocontrol agent and application. The main component of the arbuscular mycorrhizal fungus MW21 powder is Gigaspora albida MW21. Mix the soil containing the above mycorrhizal fungal spores with kaolin in a certain proportion, dry and crush, add 1% gum arabic, and add sodium dihydrogen phosphate to adjust the pH to 7.0, pass through a 300-mesh sieve, and dry to 3% water content, made into a powder with a concentration of 40-60 spores / g. Sprinkle the powder on the root circle of woody plants according to the dosage of 2g / plant, the control effect on woody plant diseases is more than 52.29%, the effect of promoting growth is more than 30.60%, and the survival rate of disease-free woody plants can be increased by 26.66% % or more, and improve the stress resistance of woody plants, and the growth-promoting effect reaches more than 10%.

The invention discloses a preparation method of a novel silver-loaded titanium dioxide nanotube-magnetic chitosan / β-cyclodextrin composite material and its application in the treatment of printing and dyeing wastewater. This method mainly uses titanium dioxide nanotubes as the matrix, directional loading of silver particles on the surface, and then cross-linking with magnetically modified chitosan / β-cyclodextrin to synthesize a composite with excellent degradation performance for organic dyes under natural light. Material. The main technical features are: adding P25-TiO2 powder, NaOH solution, AgNO3 solution, β-cyclodextrin, chitosan and glutaraldehyde in a certain proportion. The material was obtained by washing and drying with ultrapure water, 0.3-0.4% (mass percent concentration) HCl, and ethanol respectively. It has a strong degradation ability to chrome black T, and the photocatalytic degradation speed is fast. The degradation rate can reach more than 95% under natural light, and it has the advantages of easy separation and recycling.

The invention discloses a multi-category combined ecological hydraulic system and a construction method thereof. The system includes a channel bottom geomorphic unit component laid on the bottom of a river channel, a deep pool geomorphic unit component embedded in the bottom of the concave bank of the river bed, and a half-buried The shoal geomorphological unit component placed at the inflection point of the curved river section of the river channel; the channel bottom geomorphic unit component is a flat rhombus quadrangular prism, with a number of circular holes evenly distributed on its upper surface and a number of diamond-shaped protrusions fixed The deep pool landform unit components include a cube-shaped frame and a plurality of multi-lobed arc tubular members embedded in the frame; The circular tubular member; the interior of the arc tubular member and the circular tubular member is hollow, and a plurality of circular permeable holes are evenly distributed on the surface. This system can promote the plane meandering shape of the channelized channel and the development of landform units.

The invention belongs to the technical field of protecting plants, and in particular relates to a bio-control combined bacterium agent CB28 admixture for preventing cucumber downy mildew. The CB28 admixture mainly comprises bacillus magaterium BS13 of which preservation number is CGMCC No.4734 and enterobacter BJN15 of which preservation number is CGMCC No.4733. Each bacterium is cultivated in LBculture liquid through vibrating at 200 rpm for 18-20 hours at 32 DEG C and centrifuged at 4000 rpm for 15 minutes, finally wet bacterium and bacterium preservation liquid are prepared as suspension bacterium liquid according to the rate of 1:40 (g / ml). Mixed preparation is formed according to the viable bacteria count rate of the bacterium of 1:1, and the concentration of the viable bacteria in the admixture is 1*109-1010 cfu / ml. The preventing effect of the CB28 admixture to the cucumber downy mildew is over 70%. The combined bacterium agent prevents the pests by spraying or spraying and root treatment at the same time.

The present invention relates to an automatic variable fishway. More particularly, an automatic variable fishway by water level sensed of the invention can automatically vary its height to uniformly maintain the quantity of water drained through the fishway so that migratory animals can freely move through the fishway to upstream or downstream of a dam regardless of the quantity of storage water. The automatic variable fishway by water level sensed of the invention is installed in a bank for storing a predetermined quantity of water to allow migration of fish, and comprises: an underwater gate 170 for being erected or laid by a drive means which is operative in response to a signal from a water level detecting sensor 50 for detecting the level of storage water; and a fishway plate 110 connected with a top of the underwater gate 170 to form a migration path for fish.