CN101233842A - Method and facility for killing oncomelania - Google Patents

Method and facility for killing oncomelania Download PDF

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Publication number
CN101233842A
CN101233842A CNA2007100514170A CN200710051417A CN101233842A CN 101233842 A CN101233842 A CN 101233842A CN A2007100514170 A CNA2007100514170 A CN A2007100514170A CN 200710051417 A CN200710051417 A CN 200710051417A CN 101233842 A CN101233842 A CN 101233842A
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oncomelania
spiral shell
water
facility
isolation
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康强胜
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康强胜
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Priority to CNA2007100514170A priority Critical patent/CN101233842A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

The invention relates to a method and a device for killing snails. By applying a. a snail killing pad for restraining plant growing and preventing snails from getting in and out of earth, b. a snail breeding ground with large water change, and a separation device, the snails are prevented from moving with water level so as to obtain a suitable breeding environment and further kill the snails; By covering the snail killing pad, the snails can not obtain necessary wet earth for living and vegetation for hiding and eating. During flood season, the separation device can prevent the snails on water side from moving with the water level and cause the snails to be drowned; during water withdrawal, the snails can not move with water level to a suitable breeding ground due to the existing of the separation device and then die. The separation device can be a separating channel, floating separating matters, as well as separating nets, separating boards or separating cloth with fixed support structures. According to different environments and snail breeding grounds, the snail killing pad and the separation device, or the snail killing pad and the separation device can be adopted for killing the snails. The snail killing pad, the floating separation device, etc. can contain drugs for killing and expulsing snail and other drugs.

Description

A kind of method of killing oncomelania and facility
One, technical field:
The present invention relates to a kind of method and facility of killing blood fluke intermediate host oncomelania.
Two, technical background:
Schistosomiasis is a kind of parasitosis of serious harm health of people.In China, oncomelania is the unique intermediate host of Schistosoma japonicum.Killing oncomelania just can alleviate until eliminating the harm of Schistosoma japonicum to people.
The oncomelania in the popular district of China mainland blood fluke is divided into two types by its profile.One is rib shell oncomelania, mainly is distributed in the network of rivers, lakes and marhshes area; Another kind is the bare hull oncomelania, mainly is distributed in mountain area, knob.Killing oncomelania often adopts methods such as environmental reconstruction and snail control with drugs.Environmental reconstruction mainly is to change in conjunction with construction of water conservancy works to have oncomelania to multiply the environment in zone, and oncomelania can't be multiplied, as lifts that the continent falls beach, fill, encloses and cultivates, the channel sclerosis, changes the field, repaiies fishpond etc.Other snail-killing method has that soil buries, water logging, baked wheaten cake etc.In all snail-killing methods, it is effective method that sclerosis and medicine are killed.Sclerosis refers to construction materials such as cement, masonries to the domatic sclerosis of water channel and to whole irrigation canals and ditches sclerosis.
At present, China's oncomelania mainly is distributed in big intensive area in rivers and lakes Zhou Tan, the network of rivers of SEA LEVEL VARIATION and the abominable outlying district of natural environment, and there is the difficulty in technology, funds and the ecological environmental protection in the spiral shell that goes out in these areas.
Three, summary of the invention:
1. goal of the invention: it is big to the present invention is directed to the above-mentioned spiral shell difficulty of going out, and the environmental ecology problem that the sclerosis expense is high and sclerosis may bring proposes a kind of oncomelania ecological habit that utilizes, the snail-killing method that expense is relatively low.
2. technical scheme:
Water-snail eradication method of the present invention is: use the spiral shell pad that goes out that can suppress plant growing and stop oncomelania turnover earth by a., and b. is in flood season level variation oncomelania breeding place greatly, stop oncomelania and spiral shell ovum to stop oncomelania to obtain suitable breeding environment with isolation facility with methods such as waterline move, and then killing oncomelania.
Because therefore the various breeding environment differences of oncomelania should take different measure at varying environment.Specific as follows:
A. oncomelania breeding site such as the beach, the middle of the river that the big Jiang Tan of SEA LEVEL VARIATION, lakeshore, river shoal, continent protective embankment and flood season are not exclusively had by water logging, beach, the middle of a lake, with with 1 road or the multiple tracks isolation facility of flood bank or water bank almost parallel, stop oncomelania and spiral shell ovum to move with the change of waterline.Flooded fully for a long time by water as long as guarantee isolation facility water side beach, and the dike side is not suitable for oncomelania and grows or snail distribution is arranged but manually kill, under the prerequisite that no external source oncomelania replenishes, just can be after flood season several times, complete killing oncomelania.To rivers and lakes Zhou Tan, the river shoal of external drift about in the water oncomelania and the intrusion of spiral shell ovum are arranged, or flood season flooded fully by water but the middle of the river, the middle of a lake Zhou Tan that have external oncomelania and spiral shell ovum to invade in the water-break process, stop the external oncomelania that drifts about in the water and the intrusion of spiral shell ovum with isolation facility.
B. little to SEA LEVEL VARIATION, the ditch that snail distribution is comparatively concentrated, canal, creek, the pool, depression, infiltration slope etc. use the spiral shell pad that goes out to stop oncomelania to obtain suitable breeding environment, and then the spiral shell that goes out.The spiral shell pad that goes out will suppress, stop the growth of its overlay area plant fully, also can't be survived by the oncomelania of its covering.Oncomelania on from other zone migration to the spiral shell pad that goes out also will be dead because of no living environment.
C. complicated the spiral shell point arranged at some, the isolation facility and the spiral shell pad that goes out are used in combination.Isolation facility is used to stop oncomelania and spiral shell ovum to move with waterline, and the intrusion of external oncomelania that drifts about in the water and spiral shell ovum.The spiral shell pad that goes out is used to cover local oncomelania close quarters.
Water-snail eradication method corresponding establishment of the present invention is as follows:
The spiral shell pad that goes out is certain intensity of tool and the flexible flaky material that macromolecular material is made.Cover the spiral shell pad that goes out at the intensive mud face of oncomelania and not only can impel the oncomelania death that is capped, and can stop the growth of plant.The conditions such as earth, vegetation of also not having oncomelania existence on it.Go out can contain slow release in the spiral shell pad kill that spiral shell drives spiral shell, kills the cercaria miracidium, algal control is antibacterial, suppress plant growing, the termite-proof material of protection against rodents; And can periodically add, soak, spray, whitewash new medicine, also can spray, whitewash the stickum that contains medicine.The spiral shell pad that goes out is used for quick, the easy spiral shell that goes out in oncomelania compact district, also can replace cement and slabstone that irrigation canals and ditches, rivers Hu Po etc. are hardened.Go out behind the spiral shell, the spiral shell pad that goes out is removable and can be used for the spiral shell that goes out that other has Luo Qu.
Isolation facility is an isolating trenches, suspension spacer, or the separation net of tool fixing rack structure, division board or isolation cloth; Also can be the facility that other stops oncomelania and spiral shell ovum to move with waterline.
Isolating trenches is the ditch of the tool certain width and the degree of depth.Can use irrigation canals and ditches as isolation facility on the ground that satisfies following condition: sediment charge is low in the flood season water.The intrusion of drifting about in the water of no external source spiral shell and spiral shell ovum.Soil property is harder, and the dike lateral sulcus wall of formation is precipitous, and oncomelania can't be survived along dike lateral sulcus wall waterline after the water-break.The elevation that dike side tool is certain, and subterranean water level can comparatively fast descend after the water-break, is not suitable for oncomelania and grows.Softer as if soil property, can harden with cement plate or slabstone in isolation furrow dam side in the easy slope that forms suitable oncomelania existence, and the also available spiral shell pad that goes out is along the waterline place mat.
The suspension spacer be a kind of by self buoyancy in water, opened and form that a kind of water can pass through block the spiral shell isolation facility.The suspension spacer can be used for the big place of any fluctuation in stage, is specially adapted to the physical features complexity, surface relief is big, and that flood passage requires is high, sediment charge is big, have the outside to drift about in the water beach, continent that oncomelania and spiral shell ovum invade.Suspension spacer bottom is with press strip or the seamless ground of being fixed in of other utensil during use, other parts then by buoyancy in water, forms stop oncomelania and spiral shell ovum to move together with waterline and stop the external source oncomelania and the spiral shell ovum with the barrier of current intrusion.What each part of suspension spacer can contain slow release kills that spiral shell drives spiral shell, kills the cercaria miracidium, algal control is antibacterial, suppress plant growing, the termite-proof material of protection against rodents.And can periodically add, soak, spray, whitewash new medicine, also can spray, whitewash the stickum that contains medicine.
In the separation net of fixing rack structure, division board or the isolation cloth, separation net, division board or isolation cloth are supported by fixed support, act on identical with above-mentioned suspension spacer.What its part can contain slow release kills that spiral shell drives spiral shell, kills the cercaria miracidium, algal control is antibacterial, suppress plant growing, the termite-proof material of protection against rodents; And can periodically add, soak, spray, whitewash new medicine, also can spray, whitewash the stickum that contains medicine.The separation net of fixing rack structure, division board or isolation are furnished with certain discharge capacity, and can stop oncomelania and spiral shell ovum to pass through; Can be used for that physical features is smooth, the less demanding rivers and lakes Zhou Tan of flood passage, river shoal, also be used for bigger trunk canal of width and branch canal.
The suspension spacer, the separation net of fixing rack structure, division board or isolation cloth, its upper limb height can exceed the peak level in flood season, also can not exceed the peak level in flood season.When not exceeding the peak level in flood season, only need satisfy the residing water potential of upper limb height floods beach, water side continent fully, and this water potential keeps the long enough time.To the middle of the river that is not had by water logging fully flood season, there is the Luo Zhou beach middle of a lake, and the upper limb height of suspension spacer etc. only need exceed the elevation on beach, continent.
Below just the present invention and corresponding establishment, do to describe in detail from aspects such as principle and formations.
The present invention is mainly according to the following ecosystem characterization of oncomelania:
1.. oncomelania mainly is distributed in waterline up and down in each scope of 1 meter, and sough, and the mud grounds of moist many grass are maximum on waterline especially.
2.. spring and autumn is mainly in the activity of soil table, and the summer in winter is then many movable in soil layer.
3.. oncomelania is multiplied needs certain environment, as edible and vegetation shielded from sunlight, certain soil moisture content (the suitableeest 28%~38%, can't survive), the algae that tool is edible less than 25% oncomelania.
4.. the above meeting of one week of oncomelania water logging is dead because of oedema.
5.. water logging is inhibited to the hatching of spiral shell ovum.
6.. oncomelania self locomotivity is limited, and its diffusion mobility needs to swim, to float and to be adsorbed in the first-class form of floating thing, to realize that long distance moves by means of the flowing of water.Generally speaking, big oncomelania is adsorbed on the floating thing, drifts about by current.Immature oncomelania and spiral shell ovum then can be equal to " suspended matter " in the water, move with current.
Go out the spiral shell principle and the spiral shell facility that goes out of foundation of the present invention:
(1), stop oncomelania to obtain the environment of multiplying, oncomelania can't be survived with the spiral shell pad that goes out.
The spiral shell pad that goes out be macromolecular material make certain flexible flaky material arranged, have higher-strength and light-proofness.It is covered oncomelania multiply the zone, not only stop and suppress plant growing under it, also stop the oncomelania that covers under it to move, and its elimination the most at last; And the no oncomelania that goes out above the spiral shell pad is multiplied necessary vegetation and earth, and oncomelania can't be multiplied existence.
Go out the effect of spiral shell pad to similar with the sclerosis of cement plate, slabstone, but use the spiral shell that goes out to be lined with some other characteristics:
1.. expense is low.The go out expense of spiral shell pad of use is significantly less than expense with hardening of cement.And the spiral shell pad that goes out that some macromolecular material is made can use more than 30 years continuously.
2.. easy construction.When the spiral shell pad is gone out in use, only need tall and big plant is removed, simply even out, covering gets final product then.
3.. can use repeatedly.After oncomelania is eliminated fully, can be used for other place spiral shell that goes out.
4.. can contain the slow release snail killing agent.In the spiral shell pad production process of going out, slow release is gone out the interpolation of spiral shell lenticide thing wherein, like this, in use, can quicken the spiral shell process of going out.Go out and also can add the material that cercaria miracidium extremely, algal control are antibacterial, suppress plant growing in the spiral shell pad, in use can not form the oncomelania breeding environment.Simultaneously, the spiral shell pad is avoided damaged by rats and termite corrodes for protection is gone out, and also can add the termite-proof medicine of protection against rodents.These chemicalses also can add before use, also can in use periodically add by methods such as soaking, spray, whitewash.Go out and also can spray, whitewash the stickum that contains medicine on the spiral shell pad.
5.. suitable wide.Can be used for any zone that has spiral shell to distribute.
(2), utilize fluctuation in stage, by partition method, stop oncomelania and spiral shell ovum to change and move, and the intrusion of prevention external source oncomelania and spiral shell ovum with waterline, thus killing oncomelania.
Big in SEA LEVEL VARIATION, and the place such as river shoal, Jiang Tan, lakeshore, continent protective embankment that snail distribution is arranged, along the parallel direction of watertight barrier the isolation facility that one or multi-channel water can pass through is set at suitable elevation, flood season, owing to there is isolation facility to stop, isolation facility water side oncomelania and spiral shell ovum can't move with waterline when rising, can only be immersed in water for a long time, last oncomelania is dead because of oedema, and the spiral shell ovum then can't be hatched because of water logging, finally also with death; During water-break, dike side oncomelania can't fall back on the place that suitable growth is grown with waterline also because of the stopping of isolation facility, also will be dead gradually.If have external source oncomelania and spiral shell ovum to invade, according to current and continent beach environment, on certain position and direction on beach, continent, isolation facility is set, stop the intrusion of external source oncomelania and spiral shell ovum.
To not exclusively Luo Jiangxintan, beach, the middle of a lake being arranged flood season by what water logging did not have, adopt method same as described above, along certain direction isolation facility is set at suitable elevation.With above-mentioned same principle, along with the arrival in flood season with leave away, oncomelania will be withered away gradually.
To by what water logging did not have Luo Jiangxintan, beach, the middle of a lake being arranged fully flood season, isolation facility only need be placed in the water-break process, the place that can stop external source to be invaded with water drift oncomelania and spiral shell ovum, and this local isolation facility water side is because of the water logging overlong time, plant can't grow, and oncomelania also can't be multiplied existence.Because the oncomelania on the beach, continent in flood season is died because of water logging,, the oncomelania on the beach, continent is withered away gradually as long as stop moving into of external source oncomelania and spiral shell ovum.
The method of using stop oncomelania to move with the waterline flood season spiral shell that goes out need possess or create following condition:
1.. the ability that isolation facility should have enough prevention oncomelanias and spiral shell ovum to move with waterline, though there is the minority oncomelania to survive by sheer good luck, through killing oncomelania fully in several flood seasons.
2.. isolation facility water side should be flooded the sufficiently long time fully in flood season.If high bar vegetation or other building are arranged, should remove, to guarantee water side oncomelania because of the death of water logging oedema, the spiral shell ovum is also died because of hatching.Vegetation can by burn, method such as artificial or mechanical removal, downgraded.
3.. isolation facility dike side should be not suitable for oncomelania and multiply.If because of landform, environment, flood situation complexity part have the spiral shell point, should manually kill.
4.. if can not satisfy the above-mentioned the 2nd and the 3rd, need to lift the continent and fall the beach, to satisfy above-mentioned condition in conjunction with water conservancy construction.If water conservancy construction is difficult to carry out, or also be difficult to satisfy above-mentioned condition after implementing, can adopt the mode that the multiple tracks isolation facility is set.
If 5.. isolation facility suspension spacer, the separation net of fixing rack structure, division board or isolation cloth, the isolation elevation does not need to be higher than the maximum height of flood season level, only need satisfy above-mentioned the 2nd, promptly only need satisfy the residing water potential of isolation facility upper limb height floods beach, water side continent fully, and this water potential keeps the long enough time.Isolation facility so is provided with, and can satisfy flood passage requirement in flood season to the full extent.
6.. had Luo Jiangxintan, a middle of a lake beach by what water flooded fully flood season, should be by the water logging long enough time, and do not have emersed vegetation and building.
Isolation facility is the resistance spiral shell facility that water can pass through.It can be an isolating trenches, suspension spacer, or the separation net of tool fixing rack structure, division board or isolation cloth; Also can be the facility that other stops oncomelania to pass through.
Isolating trenches is the irrigation canals and ditches of the tool certain width and the degree of depth.The excavation of isolating trenches has many benefits, as reinforcing embankment, raising the elevation on beach, dike side continent etc.With isolating trenches as the isolation facility killing oncomelania except that need satisfy the listed condition in front, also need other condition.At first should there be enough width on the beach, continent, can guarantee the excavation of isolating trenches, can reinforce embankment again simultaneously.Secondly sediment charge is low in the water in flood season, and institute's ditching canal can not lose efficacy owing to the silt alluvial makes buffer action in a short time.The 3rd, in the process of rising, the water of motion carries oncomelania and spiral shell ovum ability less to the dike side, and in the process of promptly rising, oncomelania and spiral shell ovum " can't stride across isolating trenches by current enters " beach, dike side continent can only fall into ditch, because of oedema dead.The 4th, the input of no external source oncomelania and spiral shell ovum.The 5th, soil property is harder, and the dike lateral sulcus wall of formation is precipitous, and oncomelania can't be along the existence of dike lateral sulcus wall waterline after the water-break, oncomelania or dead because of no suitable environment on the mud face.Move on in the water, because of no current motive force can't arrive beach, water side continent, oedema in ditch and dying.If soil property is softer, and easily form the slope of suitable oncomelania existence, need isolating the furrow dam side with cement plate or slabstone sclerosis, or with the spiral shell pad that goes out along the waterline place mat.
The suspension spacer is a kind ofly to open in water by self buoyancy, and form that a kind of water can pass through block the spiral shell isolation facility.Its provide the component of buoyancy or member can be evenly or non-uniform Distribution on the suspension spacer, and the material that played water, resistance spiral shell can be separation net, isolation cloth or flexible flexible panel structure.The resistance spiral shell plate that is made of lamellar material also can be installed on the suspension spacer.When the suspension spacer uses, the surface of solids (is fixed in press strip or the seamless ground of being fixed in of other utensil in its bottom, comprise mud face and the earth surfaces of handling with construction materials such as brick, stone, cement, or imbed in the earth), other parts then can be in water have been opened by self buoyancy, and can move freely with water; The suspension spacer does not have the part in the entry then can form " barrier " of certain width on the water surface.Like this, oncomelania and spiral shell ovum can't be in water " net " by propping by buoyancy, also can't be by floating over " barrier " of water surface." even lucky by " the suspension spacer because the time difference that the inhibition of suspension spacer causes, make oncomelania and the ovum thereof can't be, finally water logging and dying with the same moved further of waterline.
The suspension spacer provides the component of buoyancy or parts in water can be material, porous material, expanded material, the hollow object lower than water density, inflatable articles etc.
If resistance spiral shell plate is housed on the suspension spacer, the effect of suspension spacer resistance spiral shell will be more obvious.Resistance spiral shell plate is a lamellar material, but along continuous straight runs is installed in parallel on the suspension spacer.Big oncomelania during disordered motion, will be difficult to by resistance spiral shell plate on the suspension spacer by absorption affinity.And be equal to the young spiral shell and the spiral shell ovum of suspended matter in the water, because of resistance spiral shell plate is arranged, it also will significantly reduce with the probability of water wave by the suspension spacer.
The spiral shell that goes out that the suspension spacer can contain slow release drives the spiral shell medicine, to strengthen the resistance spiral shell ability of suspension spacer.Except that the interpolation spiral shell that goes out drives the spiral shell medicine, also can contain extremely cercaria miracidium composition, algal control antibacterial, suppress plant growing, the termite-proof material of protection against rodents, the purpose one of adding these chemical substances is to make the suspension spacer not possess the environment that oncomelania is multiplied, and the spacer of avoiding suspending becomes the place that oncomelania is multiplied and spread; After the water-break simultaneously, can eliminate the oncomelania of suspension spacer institute overlay area.The 2nd, protection suspension spacer avoids damaged by rats and termite corrodes.The 3rd, because of killing cercaria, make the water body safety improve.The suspension spacer also can add before use except that adding in process of production the medicine.Because new medicine in use can periodically be added, be soaked, spray, whitewash to one specified time of EDD tool for guaranteeing the resistance spiral shell effect of suspension spacer.To the suspension spacer, also can spray, whitewash the stickum that contains medicine.
The suspension spacer can be used for any oncomelania breeding place that fluctuation in stage is arranged.Be specially adapted to the physical features complexity, surface relief is big, that flood passage requires is high, sediment charge is big, have the outside to drift about in the water beach, continent that oncomelania and spiral shell ovum invade.
The suspension spacer can be made into various versions.Only need to satisfy and in water, to rely on self buoyancy to open one oncomelania and spiral shell ovum isolation " net ".
A kind of structure of suspension spacer is: the buoyant raft of bubbling through the water column specially, and seamless link separation net or isolation cloth or flexible panel structure under the buoyant raft.Separation net or isolation cloth or flexible board have certain discharge capacity, but can stop oncomelania or spiral shell ovum to pass through.Buoyant raft is the continuous rectangular structure of tool certain width, the seamless with it continuous separation net of the enough pull-ups of its buoyancy in water, cloth or flexible board.Can adorn resistance spiral shell plate on the buoyant raft, " stride across " the suspension spacer by disordered motion to stop big oncomelania.In the process of rising, this kind suspension spacer is used in beach, continent, river shoal that water surface stormy waves is bigger, can reduce oncomelania and spiral shell ovum " are crossed " the suspension spacer with stormy waves probability.
A kind of structure of suspension spacer is: continuous rule or non-regular strip structure provide buoyancy, can adorn resistance spiral shell plate on it, stop big oncomelania " to stride across " the suspension spacer by disordered motion.Seamless the linking to each other of net, cloth or flexible board of playing buffer action in strip structure and the water, the spacer that suspends like this relies on self buoyancy to form " net " that stops oncomelania and spiral shell ovum to move with waterline in water.The width of this kind suspension spacer buoyancy structure on the water surface is narrower, can be used in the process of rising water surface calmness, less beach, continent, the river shoal of stormy waves.
Other suspension spacer example is: 1. the suspension spacer is the strip planar structure, and only portion is added with buoyancy component or member in the plane.The seamless ground of being fixed in, bottom of no buoyancy part below during use, top there are not the part in the entry to form buoyant raft.2. the suspension spacer is the strip planar structure, and buoyancy component or member are evenly distributed on the buoyant raft of plane.With the seamless ground of being fixed in, one side, top there is not the part in the entry to form buoyant raft during use.3. the suspension spacer is the strip planar structure, and buoyancy component or member non-uniform Distribution are on the buoyant raft of plane.With buoyancy component or the few seamless ground of being fixed in, one side of member, top there is not the part in the entry to form buoyant raft during use.Other.
When above-mentioned suspension spacer uses on the beach, continent of surface relief injustice, " net " that the suspension spacer forms in water, its width can suitably be added and subtracted according to the fluctuating on ground, can form a complete isolation " net " after rising with assurance.
To have opened isolation " net " by buoyancy different with the suspension spacer, and in the separation net of fixing rack structure, division board or the isolation cloth, separation net, division board or isolation cloth are supported by fixed support, form the resistance spiral shell " net " that can allow water pass through together.Owing to be subjected to the restriction of stent support ability and installation, the isolation facility of this structure can be used for that physical features is smooth, the less demanding rivers and lakes Zhou Tan of flood passage, river shoal, also is used for bigger trunk canal of width and branch canal.
Go out spiral shell principle and the spiral shell process of going out of the separation net of fixing rack structure, division board or isolation cloth are identical with the suspension spacer.Resistance spiral shell plate also can be installed on it.And what its part can contain slow release kills that spiral shell drives spiral shell, kills cercaria miracidium composition, algal control is antibacterial, suppress plant growing, the termite-proof material of protection against rodents.Add before medicine also can use and in use periodically add by methods such as soaking, spray, whitewash.Also can spray, whitewash the stickum that contains medicine.
(3), use go out spiral shell pad and isolation facility simultaneously
To landform, flood season, vegetation and circumstance complication the spiral shell point arranged, the mode that can adopt isolation facility to combine with the spiral shell pad that goes out stops oncomelania to free in and out earth, stops the growth of plant with the spiral shell pad that goes out.Stoping oncomelania and spiral shell ovum to change with waterline with isolation facility moves.
The mode that available isolation facility combines with the spiral shell pad that goes out under the following situation spiral shell that goes out.
On the intensive reed that multiplies of oncomelania-sedge beach, cover the spiral shell pad that goes out with burning or manually even out the back, suppress multiplying of oncomelania, to eliminate topmost Luo Yuan on the beach to greatest extent.The intrusion that stops oncomelania and spiral shell ovum to move with waterline and stop external source oncomelania and spiral shell ovum with isolation facility simultaneously in flood season.
According to the spiral shell point hydrology is arranged, the rule that the flood season level line moves, the laying eggs of spiral shell, ovum hatching, young spirodromy long hair such as educate at data, and the spiral shell pad that will go out covers beach, the continent lower edge of spiral shell dense distribution, and the upper limb that arrives of water potential.The spiral shell pad that goes out of beach, continent lower edge can suppress effectively to rise first ripple breeding growth of oncomelania in early stage and the breeding of the ripple after water-break growth.The breeding of oncomelania growth when the spiral shell pad that goes out of upper limb then can suppress highstand.So, add the effect of isolation facility, effectively killing oncomelania.
Luo Jiangxintan and beach, the middle of a lake are arranged.Stand on the water surface building foundation at effective reduction vegetation height and removing, the spiral shell pad covers oncomelania close quarters on the beach, continent with going out.To the beach, continent that is not exclusively had flood season, in the time of should covering high water level, about the long waterline of holding time by water logging; Isolation facility then on certain elevation, is arranged along this waterline direction; According to the external source oncomelania possibility mode of infection, isolation facility is set simultaneously, stops the intrusion of external source oncomelania and spiral shell ovum.To the beach of flooding fully, continent, the effect of the spiral shell pad that goes out is to stop plant to stretch out the water surface; The orientation that isolation facility then may be imported according to current and external source oncomelania and spiral shell ovum is arranged.
After using isolation facility, at dike side regional area the place of snail distribution is arranged, need at first dig the headrace channel, with lowering of watertable, the headrace channel is compressed to oncomelania in the ditch simultaneously.Cover elimination with the spiral shell pad that goes out in the ditch.
Lower to elevation, as to have oncomelania to distribute in flakes forest land can not effectively raised under the situation of its elevation, stops oncomelania with isolation facility and the spiral shell ovum moves with waterline and the intrusion of external source oncomelania and spiral shell ovum in flood season.Simultaneously, the mode on ridge is lifted in the employing ditching in the forest land, oncomelania is compressed in the ditch distribute, and concentrates with the spiral shell pad that goes out and kills.
According to the above, the present invention can realize the purpose of killing oncomelania in the following manner.
1.. the environment that stops oncomelania to obtain to multiply with the spiral shell pad that goes out comes killing oncomelania.
2.. utilize the variation of flood season level, stop oncomelania and spiral shell ovum to move killing oncomelania with waterline with isolation facility.
3.. stop the intrusion of external source oncomelania and spiral shell ovum with isolation facility.
4.. strengthen the spiral shell efficient of going out with the method for adding slow releasing pharmaceutical.
3. the characteristics of water-snail eradication method of the present invention and corresponding establishment are:
1.. make full use of the oncomelania ecological habit, and multiply relevant natural phenomena with oncomelania.
2.. the water bank band in waters such as river, river, lake is habitat, the food source of many water, terrestrial and migrates gallery, also is the important component that water body is realized self-purification function.The irrigation canals and ditches of dense waterway net region are the important assurances of dense waterway net region bio-diversity.Therefore use reinforced concrete, building stones etc. to carry out the irrigation canals and ditches sclerosis and the concrete bank protection will destroy the water bank band and the dense waterway net region irrigation canals and ditches ecosystem, reach water body self-purification ability.Use the isolation facility of removing easily and the spiral shell pad that goes out, can protect the water bank band and the network of rivers ecosystem to greatest extent.
3.. can reduce the use of molluscicide etc. to greatest extent, avoid these chemicalses to injure other environmental organism.
4.. compare that to use reinforced concrete, building stones etc. to carry out the high expense and the difficulty of construction of irrigation canals and ditches sclerosis and concrete bank protection etc. big, use the isolation facility and the spiral shell pad that goes out, it is simple and easy to construct, and expense is also relatively low.
5.. do not relate to the environmental reconstruction project that may occupy farmland, breed pond etc., but therefore while Min. closure against grazing is easy to accept and promote.
6.. can use repeatedly and reclaim.After the spiral shell point that goes out is finished the spiral shell task of going out, the spiral shell facility that goes out can be moved on to other area and continue to use.The facility that does not re-use is recyclable, makes other purposes, with recycling.
Four, embodiment:
1. specific embodiment.At dense waterway net region, the spiral shell pad hardens to the spiral shell irrigation canals and ditches are arranged with going out.Three sclerosis of spiral shell pad of can going out with not seeping water of little irrigation canals and ditches, big trunk canal branch canal adopts the domatic sclerosis in both sides.Only big plant and other barrier need be removed during sclerosis, the simple levelling in ground, the spiral shell pad that goes out in the covering gets final product.
2. specific embodiment.To the little river of SEA LEVEL VARIATION, river, lake, the pool, creek, river etc., if snail distribution is arranged, remove bigger plant and barrier, after the simple levelling in ground, along the waterline direction, on waterline, cover and lay with the spiral shell pad that goes out.If waterline has fuctuation within a narrow range, can cover laying at suitable position according to the distribution of oncomelania and the variation of waterline.
3. specific embodiment.The massif area there are the mountain stream, irrigation canals and ditches, pool of snail distribution etc., by above-mentioned first and second kinds of embodiments, with the spiral shell pad that the goes out spiral shell that goes out.To the infiltration slope that has the oncomelania large tracts of land to distribute, should consider to dig the headrace channel earlier, with lowering of watertable, force oncomelania to distribute along the headrace channel dotted line, kill with the spiral shell pad that goes out again.
4. specific embodiment.To flood season level change greatly and have enough width Jiang Tan, lakeshore, reach the river shoal, if sediment charge is less in the flood season water, hard, the no external source spiral shell intrusion of beach, continent soil property, beach, continent dike side elevation are big, available isolating trenches stops oncomelania and spiral shell ovum to move with waterline, and then killing oncomelania.Isolating trenches excavates at suitable position along the embankment direction, and the earth of excavating is used to raise beach, dike side continent, and one reinforces embankment, makes beach, dike side continent be not suitable for oncomelania in the time of two and multiplies.Isolating furrow dam lateral sulcus wall should be precipitous.The width of ditch and the degree of depth are determined according to regimen over the years and water (flow) direction.
If soil property is softer, and the slope of the suitable oncomelania existence of easy formation, need to harden with cement plate or slabstone in isolation furrow dam side.
5. specific embodiment.Flood season level is changed greatly, physical features is smooth, the less demanding rivers and lakes Zhou Tan of flood passage, river shoal, and cause the big trunk canal of SEA LEVEL VARIATION, branch canal because of irrigation and drainage, adopt separation net, division board or the isolation cloth of fixing rack structure to stop oncomelania and spiral shell ovum to move with waterline, and the intrusion that stops external source oncomelania and spiral shell ovum, and then killing oncomelania.The separation net of fixing rack structure, division board or isolation cloth are provided with along embankment direction appropriate location on the beach, continent; If trunk canal or branch canal are provided with at upper edge, slope, channel both sides channel.
6. specific embodiment.To flood season level variation rivers and lakes Zhou Tan, river shoal greatly, and, adopt the suspension spacer to stop oncomelania and spiral shell ovum to move with waterline because of irrigation and drainage cause the big trunk canal of SEA LEVEL VARIATION, branch canal, and then killing oncomelania.The suspension spacer is provided with along embankment direction appropriate location on the beach, continent; If trunk canal or branch canal are provided with at upper edge, slope, channel both sides channel.If rivers and lakes Zhou Tan, river shoal have external source oncomelania and spiral shell ovum to invade, according to current and continent beach environment, on certain position and direction on beach, continent, isolation facility is set, stop the intrusion of external source oncomelania and spiral shell ovum.
The suspension spacer can be used for any place that fluctuation in stage is arranged, and is specially adapted to the physical features complexity, surface relief is big, and that flood passage requires is high, sediment charge is big, have the outside to drift about in the water beach, continent that oncomelania and spiral shell ovum invade.
7. specific embodiment.To flood season level variation rivers and lakes Zhou Tan, river shoal greatly, and landform, flood season, vegetation and circumstance complication, adopt the multiple tracks isolation facility to stop oncomelania and spiral shell ovum to move with waterline, and the intrusion that stops external source oncomelania and spiral shell ovum, and then killing oncomelania.The per pass isolation facility is specifically selected isolating trenches, suspension spacer, still is separation net, division board or the isolation cloth of fixing rack structure, decides according to concrete condition.
8. specific embodiment.To not covered Luo Jiangxintan, beach, the middle of a lake being arranged flood season, along certain direction isolation facility is set at suitable elevation, stop oncomelania and spiral shell ovum to move with waterline, and the intrusion that stops external source oncomelania and spiral shell ovum, and then killing oncomelania.Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
9. specific embodiment.To by what water logging did not have Luo Jiangxintan, beach, the middle of a lake being arranged fully flood season, isolation facility is placed in the water-break process, can stop external source with the water place that oncomelania and spiral shell ovum invade that floats.Because in the flood season watering-out process, therefore original oncomelania, as long as stop moving into of external source oncomelania and spiral shell ovum, just can make the oncomelania on the beach, continent wither away gradually by the water logging oedema and dead.
Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
10. specific embodiment.Flood season level is changed greatly and have Jiang Tan, lakeshore, and the river shoal of enough width, and less as if sediment charge in the flood season water, beach, continent soil property is hard, no external source spiral shell is invaded, beach, continent dike side elevation is big, stops oncomelania and spiral shell ovum to move with waterline with isolating trenches, and then killing oncomelania.Isolating trenches excavates at suitable position along the direction of embankment, and the earth of excavating is used to raise beach, dike side continent, and one reinforces embankment, makes beach, dike side continent be not suitable for oncomelania in the time of two and multiplies.Isolate furrow dam lateral sulcus wall with the spiral shell pad that goes out along the waterline place mat.
11. specific embodiment.On the intensive reed that multiplies of oncomelania-sedge beach, after burning or manually evening out, cover the spiral shell pad that goes out and suppress multiplying of oncomelania, to eliminate topmost Luo Yuan on the beach to greatest extent.Stop oncomelania and spiral shell ovum to move with waterline with isolation facility simultaneously in flood season, and the intrusion that stops external source oncomelania and spiral shell ovum.
Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
12. specific embodiment.The spiral shell pad that will go out covers beach, the continent lower edge of spiral shell dense distribution, and the upper limb of water potential arrival.The spiral shell pad that goes out of beach, continent lower edge can suppress effectively to rise first ripple breeding growth of oncomelania in early stage and the breeding of the ripple after water-break growth.The spiral shell pad that goes out of upper limb then can suppress highstand, the breeding growth of oncomelania.Stop oncomelania to move with waterline with isolation facility simultaneously in flood season, and the intrusion that stops external source oncomelania and spiral shell ovum.
Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
13. specific embodiment.To not exclusively Luo Jiangxintan and beach, the middle of a lake being arranged flood season, when covering high water level, about the long waterline of holding time with the spiral shell pad that goes out by what water logging did not have.Isolation facility then on certain elevation, is arranged along this waterline direction.Isolation facility is used to stop oncomelania and spiral shell ovum to move with waterline in flood season, and the intrusion that stops external source oncomelania and spiral shell ovum.Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
In the enforcement isolation facility and the spiral shell pad that goes out go out the spiral shell process, should effectively reduce the vegetation height and remove the supporter that stands on the water surface.The spiral shell pad that goes out can cover the intensive high bar vegetation regions of oncomelania such as reed, sedge on the beach, continent simultaneously, stops plant growing and stretches out the water surface; Concrete overlay area determines according to concrete condition.
14. specific embodiment.To by what water logging did not have Luo Jiangxintan and beach, the middle of a lake being arranged fully flood season, stop plant growing and stretch out the water surface with the spiral shell pad that goes out, specifically the overlay area determines according to concrete condition.The moving into of external source oncomelania and spiral shell ovum when isolation facility is used for water-break, the orientation that its position may be imported according to current and external source oncomelania and spiral shell ovum is arranged.
Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
15. specific embodiment.After using isolation facility, at dike side regional area the place of snail distribution is arranged, need at first dig the headrace channel, with lowering of watertable.The headrace channel is compressed to oncomelania in the ditch simultaneously, covers with the spiral shell pad that goes out and eliminates.
Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
16. specific embodiment.Lower to elevation, as to have oncomelania to distribute in flakes forest land can not effectively raised under the situation of its elevation, tackles the oncomelania that moves with water with isolation facility in forest land water side or dike lateral edges; The mode on ridge is lifted in the employing ditching in the forest land, oncomelania is compressed in the ditch distribute, and concentrates with the spiral shell pad that goes out and kills.
Isolation facility is specifically selected isolating trenches, suspension spacer, or the separation net of fixing rack structure, division board or isolation cloth, adopts several roads isolation facility, decides according to concrete condition.
17. specific embodiment.The spiral shell pad that goes out be macromolecular material make certain flexible flaky material arranged, have higher-strength and light-proofness.It covers the mud face that spiral shell exists, and can suppress and hinder the growth of plant, limits the activity of oncomelania and ingests, and cause the death of oncomelania.The spiral shell pad that goes out after the covering, its upper surface is because of no plant and earth, and oncomelania can't be multiplied thereon.
The spiral shell pad that goes out can be made into permeable and fluid-tight type, to be applicable to the different spiral shell points that goes out.
18. specific embodiment.The related spiral shell pad that goes out can manufacture the form that contains the slow release medicine in the 17th kind of scheme, to quicken go out the spiral shell process and the spiral shell efficient of going out.The slow release medicine drives the spiral shell medicine for the spiral shell that goes out; Also can add simultaneously extremely the cercaria miracidium, press down antibacterial, as to suppress plant growing material, and the medicine of mouse bite preventing that is used to protect and termite-proof erosion.
After the spiral shell pad that goes out also can be made, add medicine by methods such as soaking, spray, whitewash.
The spiral shell pad (pastille and non-pastille) that goes out can in use periodically add new medicine by methods such as soaking, spray, whitewash.
19. specific embodiment.17th, the related spiral shell pad that goes out in 18 kinds of schemes reaches in the use before use, in its surface spraying, whitewash the stickum that contains medicine.
20. specific embodiment.The suspension spacer be a kind of by self buoyancy in water, opened and form that a kind of water can pass through block the spiral shell isolation facility.Net, cloth or flexible flexible panel structure that it can can't be passed through by, oncomelania and spiral shell ovum by water, and the component or the member that play suspension effect in water are formed.Suspension spacer bottom is with press strip or the seamless ground of being fixed in of other utensil during use, and other parts are then because buoyancy forms the barrier that stops oncomelania and spiral shell ovum to pass through together in water.
The suspension spacer can be made various versions.Only need to satisfy and in water, to rely on self buoyancy to open one oncomelania and spiral shell ovum isolation " net ".
A kind of structure of suspension spacer: the member that buoyancy is provided on the suspension spacer is rule or non-regular strip, it with water in play buffer action seamless linking to each other of net, cloth or flexible board; Net, the seamless ground of being fixed in of cloth or flexible board bottom.Suspension spacer dependence self buoyancy forms " net " that stops oncomelania and spiral shell ovum to move and stop the intrusion of external source oncomelania and spiral shell ovum with waterline in water like this.The width of this kind suspension spacer buoyant member on the water surface is narrower, can be used in the process of rising water surface calmness, less beach, continent, the river shoal of stormy waves.
A kind of structure of suspension spacer: the member that buoyancy is provided on the suspension spacer is the elongated buoyant raft of tool certain width.Seamless link separation net, isolation cloth or flexible plate under the buoyant raft, separation net, the seamless ground of being fixed in of isolation cloth or flexible plate bottom.This kind suspension spacer water surface buoyant member broad.In the process of rising, this kind suspension spacer is used in beach, continent, river shoal that water surface stormy waves is bigger, can reduce oncomelania and spiral shell ovum " are crossed " the suspension spacer with stormy waves probability.
A kind of structure of suspension spacer: the suspension spacer is the strip planar structure, and only portion is added with buoyancy component or member in the plane.The seamless ground of being fixed in, bottom of no buoyancy part below during use, top there is not the part in the entry to form buoyant raft in water.
A kind of structure of suspension spacer: the suspension spacer is the strip planar structure, and buoyancy component or member are evenly distributed on the plane floatation spacer.With the seamless ground of being fixed in, one side, top there is not the part in the entry to form buoyant raft during use.
A kind of structure of suspension spacer: the suspension spacer is the strip planar structure, and buoyancy component or member non-uniform Distribution are on the plane floatation spacer.With buoyancy component or the few seamless ground of being fixed in, one side of member, top there is not the part in the entry to form buoyant raft during use.
A kind of structure of suspension spacer: other version.
More than on the suspension spacer of all versions, the resistance spiral shell plate that is made of lamellar material also can be installed.Resistance spiral shell plate is distributed on the buoyant raft along suspension spacer edge parallel direction, and perpendicular to buoyant raft and separation net, cloth or flexible board.After loading onto resistance spiral shell plate, big oncomelania by absorption affinity on buoyant raft during disordered motion, can't be by resistance spiral shell plate.And be equal to the young spiral shell and the spiral shell ovum of suspended matter in the water, because of resistance spiral shell plate is arranged, it also will significantly reduce with the probability of water wave by the suspension spacer.
The suspension spacer provides the component of buoyancy or parts in water can be material, porous material, expanded material, the hollow object lower than water density, inflatable articles etc.
The suspension spacer in use, the net that it has been opened in water can suitably be added and subtracted at the width of different piece, with the fluctuations of adaptation to the ground, and guarantees in the process of rising to form one complete isolation " net ".
21. specific embodiment.Related suspension spacer in the 20th kind of scheme can manufacture the form that contains the slow release medicine, to strengthen the resistance spiral shell ability of suspension spacer.The slow release medicine drives the spiral shell medicine for the spiral shell that goes out; Also can add simultaneously cercaria miracidium composition extremely, and algal control is antibacterial, the material of inhibition plant growing, and the medicine of mouse bite preventing that is used to protect and termite-proof erosion.
After the suspension spacer also can be made, add medicine by methods such as soaking, spray, whitewash.
Suspension spacer (pastille and non-pastille) can in use periodically add new medicine by methods such as soaking, spray, whitewash.
22. specific embodiment.20th, related suspension spacer in 21 kinds of schemes reaches in the use before use, in its surface spraying, whitewash the stickum that contains medicine.
23. specific embodiment.The separation net of fixing rack structure, division board or isolation cloth are with the fixed support of certain mechanical support power is arranged, and support, fixedly separation net, division board or isolation cloth.Separation net, division board or isolation cloth can allow water pass through, but oncomelania and spiral shell ovum can't pass through.Like this, the separation net of fixing rack structure, division board or isolation cloth just can rise and the water-break process in, in water, form one barrier, stop oncomelania and spiral shell ovum to move, and the intrusion that stops external source oncomelania and spiral shell ovum with the variation of waterline.
Resistance spiral shell plate also can be installed on the separation net of fixing rack structure, division board or the isolation cloth.
24. specific embodiment.Separation net, division board or the isolation cloth of related fixing rack structure can manufacture the form that contains the slow release medicine in the 23rd kind of scheme, to strengthen its resistance spiral shell ability.The slow release medicine drives the spiral shell medicine for the spiral shell that goes out; Also can add simultaneously cercaria miracidium composition extremely, and algal control is antibacterial, the material of inhibition plant growing, and the medicine of mouse bite preventing that is used to protect and termite-proof erosion.
After the separation net of fixing rack structure, division board or isolation cloth also can be made, add new medicine by methods such as soaking, spray, whitewash.
The separation net of fixing rack structure, division board or isolation cloth (pastille and non-pastille) can in use periodically add new medicine by methods such as soaking, spray, whitewash.
25. specific embodiment.23rd, separation net, division board or the isolation cloth of related fixing rack structure in 24 kinds of schemes reach in the use before use, in its surface spraying, whitewash the stickum that contains medicine.

Claims (10)

1. the method for a killing oncomelania and facility obtain suitable breeding environment by stoping oncomelania, and then killing oncomelania, it is characterized in that: stop oncomelania to obtain suitable breeding environment with one of following manner:
(1) with suppressing plant growing and stoping the spiral shell pad covering oncomelania that goes out of oncomelania turnover earth to multiply the zone;
(2) utilize the variation of flood season level, water can stop oncomelania and spiral shell ovum to move with current by, oncomelania and the intransitable isolation facility of spiral shell ovum; When rising, stop isolation facility water side oncomelania and spiral shell ovum and external source oncomelania and spiral shell ovum to move to the breeding place of higher elevation with waterline, during water-break, stop isolation facility dike side oncomelania and spiral shell ovum and external source oncomelania and spiral shell ovum to move to the breeding place of low height above sea level with waterline;
And by one of following manner killing oncomelania:
(1) the small-sized irrigation canals and ditches to there being oncomelania to multiply, spiral shell pad covering bottom of trench and both sides are domatic with going out;
(2) trunk canal, the branch canal to there being oncomelania to multiply, and the little river of SEA LEVEL VARIATION, river, lake, the pool, creek, river etc., on it is domatic, remove bigger plant and barrier, after evening out, along the waterline direction, suitable position covers and lays on waterline with the spiral shell pad that goes out;
(3) flood season level is changed greatly, Jiang Tan that oncomelania multiplies, lakeshore, river shoal are arranged and not exclusively Luo Jiangxintan and beach, the middle of a lake arranged by what water logging did not have, in position along embankment or the setting of waterline direction together to the multiple tracks isolation facility, stop oncomelania and spiral shell ovum rise and the water-break process in move with waterline, and stop the intrusion of external source oncomelania and spiral shell ovum;
(4), isolation facility is arranged in the water-break process, stops external source with the water place that oncomelania and spiral shell ovum invade that floats to by what water logging did not have Luo Jiangxintan, beach, the middle of a lake being arranged fully flood season;
(5) flood season level is changed greatly, Jiang Tan that oncomelania multiplies, lakeshore, and river shoal are arranged, the spiral shell pad that will go out covers beach, the continent lower edge of oncomelania dense distribution, and the upper limb of water potential arrival; The spiral shell pad that goes out of beach, continent lower edge can suppress effectively to rise first ripple breeding growth of oncomelania in early stage and the breeding of the ripple after water-break growth; And the spiral shell pad side of going out of upper limb can suppress the breeding growth of highstand oncomelania; Simultaneously with isolation facility stop oncomelania and spiral shell ovum rise and the water-break process in move with waterline, and stop the intrusion of external source oncomelania and spiral shell ovum;
(6) flood season level is changed greatly, oncomelania is multiplied complicated Jiang Tan, lakeshore, is reached the river shoal, in position along the direction setting of embankment together to the multiple tracks isolation facility, stop oncomelania and spiral shell ovum rise and the water-break process in move with waterline, and stop the intrusion of external source oncomelania and spiral shell ovum; Cover the local snail distribution point of isolation facility dike side with the spiral shell pad that goes out;
(7), after burning or manually evening out, cover the growth that the spiral shell pad that goes out suppresses reed and sedge, and then suppress multiplying of oncomelania, to eliminate topmost Luo Yuan on the beach to greatest extent to the intensive reed that multiplies of oncomelania-sedge beach; Stop oncomelania and spiral shell ovum to move with waterline with isolation facility simultaneously, and stop the intrusion of external source oncomelania and spiral shell ovum in flood season;
(8) to not exclusively Luo Jiangxintan and beach, the middle of a lake being arranged flood season, when covering high water level, about the long waterline of holding time with the spiral shell pad that goes out by what water logging did not have; Isolation facility then on certain elevation, is provided with along this waterline direction, stops oncomelania and spiral shell ovum to move with waterline in flood season, and stops the intrusion of external source oncomelania and spiral shell ovum.
2. the method for a kind of killing oncomelania according to claim 1 and facility is characterized in that: the described spiral shell pad that goes out that can suppress plant growing and stop oncomelania turnover earth, the certain flexible flaky material of making for macromolecular material of tool.
3. the method for a kind of killing oncomelania according to claim 1 and facility, it is characterized in that: described isolation facility is the suspension spacer, be a kind of with its bottom when being fixed in ground, can be in water by self buoyancy opened and form that a kind of water can pass through block the spiral shell isolation facility, net, cloth or the flexible flexible panel structure that can can't pass through by, oncomelania and spiral shell ovum by water, and the component or the member that play suspension effect in water are formed;
The component or the member that play suspension effect can be material, porous material, expanded material, the hollow objects lower than water density, inflatable articles;
The suspension spacer can be made various versions, only needs to satisfy when its bottom is fixed in ground, can rely on self buoyancy to open in water and forms one oncomelania and spiral shell ovum separation net, specifically can be down one of array structure:
A kind of structure of suspension spacer: the structure that buoyancy is provided on the suspension spacer is a strip, it with water in play buffer action seamless linking to each other of net, cloth or flexible board; The width of buoyant member on the water surface of this kind suspension spacer is narrower;
A kind of structure of suspension spacer: the member that buoyancy is provided on the suspension spacer is the elongated buoyant raft of tool certain width, seamless link separation net, isolation cloth or flexible board under the buoyant raft; The wider width of buoyant member on the water surface of this kind suspension spacer;
A kind of structure of suspension spacer: the suspension spacer is the strip planar structure, only portion is added with buoyancy component or member in the plane, the seamless ground of being fixed in, bottom of no buoyancy part below during use, top there is not the part in the entry to form the buoyant raft of certain width in water;
A kind of structure of suspension spacer: the suspension spacer is the strip planar structure, and buoyancy component or member are evenly distributed on the plane floatation spacer, and with the seamless ground of being fixed in, one side, top there is not the part in the entry to form buoyant raft during use;
A kind of structure of suspension spacer: the suspension spacer is the strip planar structure, buoyancy component or member non-uniform Distribution are on the plane floatation spacer, with buoyancy component or the few seamless ground of being fixed in, one side of member, top there is not the part in the entry to form buoyant raft during use.
4. the method for a kind of killing oncomelania according to claim 1 and facility, it is characterized in that: described isolation facility is separation net, division board or the isolation cloth of fixing rack structure,, the fixed support that support fixing by rising and can allow water form by separation net, division board or isolation cloth that, oncomelania and spiral shell ovum can't pass through, separation net, division board or isolation cloth are fixed on the barrier that formation stops oncomelania and spiral shell ovum to move with waterline together on the fixed support.
5. the method for a kind of killing oncomelania according to claim 3 and facility is characterized in that: described suspension spacer is the suspension spacer that resistance spiral shell plate is installed, and resistance spiral shell plate is a lamellar material, and along continuous straight runs is distributed on the suspension spacer.
6. the method for a kind of killing oncomelania according to claim 4 and facility, it is characterized in that: the separation net of described fixing rack structure, division board or isolation cloth are separation net, division board or the isolation cloth that the fixing rack structure of resistance spiral shell plate is installed, resistance spiral shell plate is a lamellar material, and along continuous straight runs is distributed on separation net, division board or the isolation cloth of fixing rack structure.
7. according to the method and the facility of the described a kind of killing oncomelania of one of claim 2 to 6, it is characterized in that: separation net, division board or the isolation cloth of described go out spiral shell pad, suspension spacer and fixing rack structure is separation net, division board or the isolation cloth that contains go out spiral shell pad, suspension spacer and the fixing rack structure of slow releasing pharmaceutical.
8. according to the method and the facility of the described a kind of killing oncomelania of one of claim 2 to 6, it is characterized in that:, add medicine by methods such as soaking, spray, whitewash before use separation net, division board or the isolation cloth of described go out spiral shell pad, suspension spacer and fixing rack structure.
9. according to the method and the facility of the described a kind of killing oncomelania of one of claim 2 to 6, it is characterized in that:, in use periodically add new medicine by methods such as soaking, spray, whitewash to separation net, division board or the isolation cloth of described go out spiral shell pad, suspension spacer and fixing rack structure.
10. according to the method and the facility of the described a kind of killing oncomelania of one of claim 2 to 6, it is characterized in that:, in use spray, whitewash the stickum that contains medicine on its surface to separation net, division board or the isolation cloth of described go out spiral shell pad, suspension spacer and fixing rack structure.
CNA2007100514170A 2007-01-30 2007-01-30 Method and facility for killing oncomelania Pending CN101233842A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101926320A (en) * 2009-06-24 2010-12-29 康强胜 Method for killing pests such as oncomelania by spraying membrane with mud in sustained-release manner
CN102687718A (en) * 2011-03-21 2012-09-26 复旦大学 Depositing molluscicidal method
CN105256759A (en) * 2015-09-06 2016-01-20 长江水利委员会长江科学院 Bottomland transverse layered ecological disturbing comprehensive oncomelania-killing-resistant method
CN105265248A (en) * 2015-11-02 2016-01-27 湖南理工学院 Mechanism for ecologically eliminating oncomelania snail population
CN110178831A (en) * 2019-07-11 2019-08-30 四川省疾病预防控制中心 A kind of method of rotten bubble ground draining killing oncomelania

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101926320A (en) * 2009-06-24 2010-12-29 康强胜 Method for killing pests such as oncomelania by spraying membrane with mud in sustained-release manner
CN101926320B (en) * 2009-06-24 2014-09-03 康强胜 Method for killing pests such as oncomelania by spraying membrane with mud in sustained-release manner
CN102687718A (en) * 2011-03-21 2012-09-26 复旦大学 Depositing molluscicidal method
CN105256759A (en) * 2015-09-06 2016-01-20 长江水利委员会长江科学院 Bottomland transverse layered ecological disturbing comprehensive oncomelania-killing-resistant method
CN105265248A (en) * 2015-11-02 2016-01-27 湖南理工学院 Mechanism for ecologically eliminating oncomelania snail population
CN110178831A (en) * 2019-07-11 2019-08-30 四川省疾病预防控制中心 A kind of method of rotten bubble ground draining killing oncomelania

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