CN109618993A - A kind of eurysome golden thread leech seed morning propagating and cultivating method - Google Patents
A kind of eurysome golden thread leech seed morning propagating and cultivating method Download PDFInfo
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- 241000243818 Annelida Species 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/40—Culture of aquatic animals of annelids, e.g. lugworms or Eunice
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Abstract
The invention discloses a kind of eurysome golden thread leech seed morning propagating and cultivating methods, and taken the lead in the key problem in technology for having pulled through eurysome golden thread leech breeding ahead of time at home by this method, and artificial culture is originally carried out in greenhouse to kind of leech and its seed.It takes greenhouse and indoors artificial to hatch orientation raising technology, promotes kind of leech to produce cocoon, hatching and seed early spring fast-growth in advance and succeed.Using mushroom dreg as ovum cocoon hatching medium, humus content and mellowness in soil hatching medium are improved, ovum cocoon hatching rate is promoted to be up to 98%.This technology invention can extend the nearly 2 months growth cycles of seed, and degree of safety crosses high temperature cultivation stages, reduce the seed death rate.Soil hatching medium is replaced using agricultural wastes; increase the mode that agricultural wastes are applied in culture fishery; change it from unification to diversification, while improving leech fry quality and reduce aquaculture cost, may advantageously facilitate the development of rural economy and the protection of ecological environment.
Description
Technical field
The present invention relates to a kind of early propagating and cultivating methods of eurysome golden thread leech seed, and in particular to a kind of eurysome golden thread leech is high-quality
The morning of seed is numerous and artificial culture seed method.
Background technique
Eurysome golden thread leech (Whitmania pigra), belong to Annelida, Hirudinea, Arhynchobdellae, Huang Zhi section, gold thread
Belong to, is commonly called as leech, is one of big hirudo provincialis breed variety in China three, dried product is the traditional Chinese herbal medicines in China.Medicine
Material market is huge to hirudo provincialis demand, wild since environmental pollution and artificial overfishing cause wild resource almost exhausted
Unprocessed leech fishery output has been unable to meet the market demand.On the other hand, American-European consumption market is very big, in recent years Japan, Korea, east
Also from a large amount of import leech in China, cause domestic leech market in short supply in South Asia various countries.In consideration of it, China Jiangsu, Anhui, Shandong,
The work of eurysome golden thread leech artificial breeding has been carried out in multiple areas such as Henan, and entire breeding process can substantially divide: the introduction of kind leech,
Breed ovum cocoon, ovum cocoon is collected and hatching, seed rearing and daily management.Kind of leech breeding ovum cocoon in the low bank of earth between fields that outdoor is built into
Row.The matrix that the breeding of kind leech and ovum cocoon incubation platform use is mainly agricultural land soil.There are many this traditional method for culturing seedlings disadvantage,
Such as: the production cocoon built using agricultural land soil, incubation platform, the problems such as moisture retention, gas permeability, soft degree and insect pest, are difficult to
Control；Heavy workload, time and effort consuming；Vulnerable to weather influence, emergence rate is low, and Seedling production stability is poor；Agricultural land soil is also
It is big to eurysome golden thread leech damage etc. there are pesticide residue.For all the foregoing reasons, cause the quantity of kind of leech breeding ovum cocoon few and
The hatching rate of ovum cocoon is low, and then influences fry quality.
Summary of the invention
Technical problem to be solved by the present invention lies in the shortcomings overcome in traditional eurysome golden thread leech method for culturing seedlings, mention
For a kind of excellent eurysome golden thread leech seed morning propagating and cultivating method of stable and high yields, leech seedling.
The object of the present invention is achieved like this, a kind of eurysome golden thread leech seed morning propagating and cultivating method, which is characterized in that packet
Include following steps:
Step 1) produces cocoon platform building: using greenhouse breeding method, Yu Sanyue builds up kind of a leech breeding greenhouse, land occupation
1 mu of area, the low bank of earth between fields is built in greenhouse, low bank of earth between fields width is 1.2-1.5m, depth 0.4-0.5m, according to greenhouse length
Low bank of earth between fields length is designed, 1-1.2m is separated by between the adjacent low bank of earth between fields, anti-escape network is arranged in low bank of earth between fields bottom and surrounding, and wherein surrounding anti-escape network is high
1-1.5m, anti-escape network edge extend the anti-escape side 0.1-0.2m；
Step 2, kind leech selection: preferably go out that body surface is not damaged, can shorten hemispherical leech into rapidly after energetic, touching makees
For standby parent, then therefrom select before weight 10% individual, as kind of a leech；
Step 3), kind leech are cultivated: kind leech is placed makes it climb into the soil layer of the low bank of earth between fields naturally on the low bank of earth between fields, and it is indefinite to regard soil layer dry and wet situation
Phase watering, keeps the humidity of setting, water temperature mutually should be suitable for preventing soil internal difference in temperature from changing greatly with the soil moisture, make kind of a leech
It generates temperature difference stress reaction and damages；Greenhouse cultivation kind leech 300-500kg per acre, warm indoor culture 1 month, until 4
The beginning of the month, i.e. harvest ovum cocoon；Pay attention to inspecting periodically whether greenhouse has breakage in cultivating process, prevents roof leaking and temperature of shed acute
Strong variation；
Step 4), harvesting of cocoon: opening collection ovum cocoon for the soil layer of the low bank of earth between fields, takes attention during ovum cocoon to handle with care, avoids damage to
Ovum cocoon, collect ovum cocoon during all operations greenhouse carry out；
Step 5), hatching medium: sediment of pond and mushroom dreg are mixed according to 1:1 ratio, as hatching medium；
Step 6), ovum cocoon hatching: using indoor hatching pattern, use the bubble chamber of long 58cm, width 48cm, high 20cm as hatching
Case；The hatching medium 2-3cm that tiling is obtained through step 5) in incubator bottom adds 500 grams of ovum cocoons collected through step 4), by ovum
Cocoon covers one layer of hatching medium, and 3cm hatching medium is covered above 500g ovum cocoon placing, depending on hatching medium dry and wet situation, no
Periodically watering, holding hatching medium humidity are 60%-70%；One layer of water plant is spread above hatching medium, is used for moisturizing and heat preservation；Ovum
Cocoon, which is hatched 20-25 days, obtains young leech；
Step 7), seedling culture: young leech is transferred to outdoor big pond in late April and is cultivated, young leech seed breeding density is
Every leech net cage 2-3 ten thousand, put 100,000 in a suitable place to breed per acre.
In step 1), building main frame structure used by greenhouse is stainless steel tube, the material that overcover uses
It is black and white dual-color plastic film, and black side is outside, for absorbing heat, improves greenhouse internal temperature.
In step 1), before building the low bank of earth between fields, pest and harmful bacteria in soil is removed using quick lime first, avoided damage to
Kind leech breeding place, ovum cocoon breakage etc., dosage is 60-80kg/ mus, then uses black and white film plastic cloth and its steel structure support
In building greenhouse on the low bank of earth between fields.
In step 2, chosen seeds leech, weight should control the ovum cocoon weight that leech weight and breeding are planted in 15-25g at just
Than, and ovum cocoon weight is directly proportional to seed quantity；Selecting kind of the leech time is mid-March.
In step 5), sediment of pond is needed by drying, crushing, three steps of being sieved are used further to subsequent ovum cocoon hatching, together
When mushroom dreg need to kill bed mud and pest and harmful bacteria microorganism in bacteria residue by being mechanically pulverized and hot fermentation,
The two mixed proportion is not less than 4:6.
In step 6), ovum cocoon disposing way should be laid in above hatching medium, cannot be concentrated or at no hatching medium interval
Under the conditions of multilayer place, prevent ovum cocoon from squeezing mutually, so that ovum cocoon is damaged, by Wen Bujun, ovum cocoon hatching rate is caused to decline, one
Case incubator is advisable with placing ovum cocoon 0.75-1kg, and density should not be too large.
The heavy aquatic plant of water of eel grass, hydrilla verticillata or waterweed should be planted in step 7), in leech net cage in a manner of potting
Object plays the role of inhabiting, hide, cool down and purifying water for seedling；Leech net cage bottom margin is equipped with weight, is used for
Fixed leech net cage position.
In step 7), the leech net cage of seedling culture is equipped with the anti-escape edge of 0.1-0.2m, prevents seedling from escaping from；Temperature exists
At 30 degree or less, pond water keeps 0.6-0.8m, when hot weather, Ying Jiashen pond water to 1m, while keeping water layer and leech
Net cage top edges at least 0.2m distance.
In step 7), it is capped with anti-bird net above leech net cage, prevents young leech from being caught by birds.
The advanced science of the method for the present invention has the beneficial effect that eurysome golden thread leech of the present invention early numerous side through the invention
Method takes the lead in having pulled through the key problem in technology that eurysome golden thread leech does sth. in advance breeding at home, originally exists to kind of leech and its seed
Greenhouse carries out artificial culture, takes Oil Temperature Controlling Technigue and indoor hatching technique, and kind of leech sexual gland is promoted to shift to an earlier date mature and improve
Seed quantity and early spring fast-growth succeed, it can be achieved that 80% or more the kind leech rate of recovery.Using mushroom dreg as ovum cocoon
Hatching medium improves humus content and mellowness in soil hatching medium, promotes ovum cocoon hatching rate to be up to 98%, and promote water
Leech seed quality.This morning breeding method collects kind of leech and carry out Seedling production March, extends the growth week of current year seed
Phase nearly 2 months, degree of safety crossed high temperature cultivation stages, reduced the seed death rate, reached the early numerous young leech seed yield of eurysome golden thread leech
Ten thousand/mu of 2-3, the young leech seed constitution bred out is excellent, neat specification, can shorten the artificial breeding period, accelerates Capital Flow, drop
Low cultivation risk has great economy and social benefit for the sound development of eurysome golden thread leech artificial breeding industry.
Specific embodiment
A kind of eurysome golden thread leech seed morning propagating and cultivating method, comprising the following steps:
Step 1) produces cocoon platform building: using greenhouse breeding method, Yu Sanyue builds up kind of a leech breeding greenhouse, land occupation
1 mu of area is advisable.The low bank of earth between fields, width 1.2-1.5m, depth 0.4-0.5m, according to greenhouse Design of length are built in greenhouse
Low bank of earth between fields length is separated by 1-1.2m between the adjacent low bank of earth between fields.Anti-escape network is arranged in low bank of earth between fields bottom and surrounding, wherein the high 1- of surrounding anti-escape network
1.5m, anti-escape network edge extend the anti-escape side 0.1-0.2m；
Step 2, kind leech selection: preferably body surface is not damaged out, bright and lustrous, can shorten half into rapidly after energetic and touching
Spherical leech as standby parent, then therefrom select before weight 10% individual, as kind of a leech；
Step 3), kind leech are cultivated: kind of a leech being placed on the low bank of earth between fields, it is allowed to climb into soil layer naturally, and irregularly spilt depending on soil layer dry and wet situation
Water keeps the humidity of setting.Water temperature mutually should be suitable for preventing kind of leech from generating temperature difference stress reaction and being hurt with soil internal temperature
Evil.Greenhouse cultivation kind leech 300-500kg per acre.Warm indoor culture 1 month, until harvesting ovum cocoon at the beginning of 4 months.It is infused in cultivating process
Meaning inspects periodically whether greenhouse has breakage, prevents roof leaking and temperature of shed acute variation；
Step 4), ovum cocoon are collected: the soil layer of the low bank of earth between fields opened into collection ovum cocoon, is produced from cocoon cave along kind of leech and takes soil, it is general every
A cave can obtain 2-3 pieces of ovum cocoon.It takes and pays attention to during ovum cocoon handling with care, prevent from destroying ovum cocoon, during collecting ovum cocoon
All operations greenhouse carry out；While collecting ovum cocoon, kind of a leech is captured, kind leech is placed respectively with ovum cocoon, kind leech is shone
It is dry, it sells.
Step 5), hatching medium configuration: using sediment of pond and mushroom dreg as hatching medium, the two ratio is according to 1:
1 mixing, hatches for subsequent ovum cocoon；
Step 6), ovum cocoon hatching: using indoor hatching pattern, use the bubble chamber of long 58cm, width 48cm, high 20cm as hatching
Case；In incubator bottom tiling hatching medium 2-3cm, 500 grams of ovum cocoons are placed, ovum cocoon are covered into one layer of hatching medium, and put again
500g ovum cocoon is set, top covers 3cm hatching medium, depending on matrix dry and wet situation, irregularly sprinkles water, and holding hatching medium humidity is
60%-70%；One layer of water plant is spread above matrix, is used for moisturizing and heat preservation；Brooding time is 20-25 days.
Step 7) is collected seedling: firstly, observing ovum cocoon using visual method, being hatched situation to it and just sentence.Ovum cocoon is hand held
In, towards sunlight, according to degree of light transmission, whether observation ovum cocoon still has remaining nutriment.Secondly, selecting part ovum cocoon, tear
Spongy external mold and olive colour inner membrance check that ovum cocoon hatches situation.After to the hatching of most of ovum cocoon, water is added to make seed from ovum
It climbs in cocoon and in hatching medium to the water surface and incubator junctional interfaces.Seed has aggregation habit, and after a period of time, seed can accumulate
Together.After seed is collected, places and cultivated in pond leech net cage.
Step 8), seedling culture: entering the last ten-days period in April, and outdoor ponds water temperature has gone up, using leech raising in cage children
Leech.Bait is fresh and alive spiral shell, and size specification is 0.1-0.3 grams.Feed frequency be every 2-3 ∕ times.It is placed in net cage primary
Property flowerpot, each flowerpot interval 2-3m, the water plants such as plantation eel grass, hydrilla verticillata, waterweed inhabit for seed in basin, water plant
It may also function as the effect to purify water.
Water body and the disinfection of leech net cage: lime disinfection concentration is 300-400mg/L, and when use first adds quick lime suitable
Amount water melts rapidly, and full pond is uniformly splashed, efficacy time 7-10d.
Stocking size: the young leech seedling of weight 0.01-0.02g.
Breeding density: net cage size is long 20m, width 3m, high 1.5m, and every leech net cage puts 2-3 ten thousand young leech seedlings, every public affairs in a suitable place to breed
Just 1,500,000 are put in a suitable place to breed.
Water level management: the pond depth of water keeps 0.6-0.8m, and when encountering hot weather, Ying Jingchang changes water and improves water level, rises
It is acted on to water temperature is adjusted.
Frequently wash etting: the periphtic algae on etting will be scrubbed frequently.
Further, in step 1), building main frame structure used by greenhouse is stainless steel tube；Overcover uses
Material be black and white dual-color plastic film, and black side is outside, for absorbing heat, improves greenhouse internal temperature.It builds
Before the low bank of earth between fields, pest and other harmful bacterias in soil are removed using quick lime first, avoid damage to kind of leech breeding a place, ovum cocoon
Breakage etc., dosage is 60-80kg/ mus, then big in building greenhouse on the low bank of earth between fields using black and white film plastic cloth and its steel structure support
Canopy.
In step 2, chosen seeds leech, weight should be controlled to be advisable in 15-25g, should not be too large or too small.In a certain range,
Kind leech weight is directly proportional to the ovum cocoon weight of breeding, and ovum cocoon weight is directly proportional to seed quantity；Selecting kind of the leech time is March
The middle ten days.
In step 5), sediment of pond is needed by drying, crushing, three steps of being sieved are used further to subsequent ovum cocoon hatching, together
When mushroom dreg need to kill micro- lifes such as bed mud and pest in bacteria residue and harmful bacteria by being mechanically pulverized and hot fermentation
Object.The two mixed proportion suggestion is not less than 4:6.
In step 6), ovum cocoon disposing way should be laid in above hatching medium, cannot be concentrated or at no hatching medium interval
Under the conditions of multilayer place, prevent ovum cocoon from squeezing mutually, ovum cocoon made to be damaged, by the unequal reason of temperature, cause ovum cocoon hatching rate
Decline.One case incubator is advisable with placing ovum cocoon 0.75-1kg, and density should not be too large.
The heavy water water plant such as eel grass, wheel blade dateplum persimmon, waterweed should be planted in step 8), in net cage in a manner of potting,
Play the role of inhabiting, hide, cool down and purifying water for seedling.Net cage bottom margin is equipped with weight, for fixing net
Case position.The net cage of seedling culture should have the anti-escape edge of 0.1-0.2m, prevent seedling from escaping from；When temperature is at 30 degree or less,
Pond water can keep 0.6-0.8m, when hot weather, Ying Jiashen pond water to 1m, while keeping water layer and net cage top edges extremely
Rare 0.2m distance.Anti-bird net should be covered above net cage, preventing young leech by the influence of birds scaring, it is inhabited and is preyed on by the latter.
Embodiment 1
It is located above the low bank of earth between fields using black and white film plastic cloth and its steel structure support and builds greenhouse, occupied area 400m2.Greenhouse
The low bank of earth between fields is built in greenhouse: long 20m, width 1.5m, depth 0.5m are separated by 1m between the adjacent low bank of earth between fields.High 1.2m is arranged in low bank of earth between fields bottom and surrounding
Anti-escape network, anti-escape network edge extend the anti-escape side 15cm.It is built according to tradition and produces cocoon flat-bed format setting control group, above the low bank of earth between fields
Curtain is littered, rain cover and insulation effect are played.3 repetitions are arranged in each processing.After production cocoon platform building is good, kind leech cultivation density is
20/m2。
Daily management: irregularly sprinkling water depending on soil layer dry and wet situation, and production cocoon platform is made to keep certain humidity.In cultivating process
Notice that whether inspect periodically greenhouse and straw screen or mat has breakage place, prevents the cocoon platform temperature acute variation that leaks and produce.Irregularly inspection
It looks into kind of leech and produces cocoon situation, cocoon latter stage to be produced carries out harvesting of cocoon.
Greenhouse and the traditional approach eurysome golden thread leech condition of production are summarized as follows:
| Put kind of a time | The harvesting of cocoon time | The kind leech rate of recovery | The kind leech death rate | It collects seedling the time | |
| Greenhouse | March 10 | April 2 | 81% | 12% | April 22 |
| Traditional mode | April 20 | May 15 | 47% | 23% | June 10 |
Using greenhouse aquaculture model, planting the leech rate of recovery can be improved 72%, while reduce the death rate of kind of leech 48%.Relative to
Traditional cultivation mode, greenhouse can promote leech parent and produce cocoon in advance, so leech seed can increase the week of cultivation in nearly 2 months
Phase.
Embodiment 2
Using the bubble chamber of long 58cm/ wide 48cm/ high 20cm as hatching apparatus, bottom spreads 3cm hatching medium, and ovum cocoon is neat
It is placed in matrix, 3cm hatching medium, indoor hatching is covered above ovum cocoon.Brooding time substantially 20-25 days.
Hatching medium production method: sediment of pond needs to be exposed to the sun by high temperature, dry, crushing, three steps of being sieved are processed,
Kill the microorganisms such as pest and the harmful bacteria in bed mud；Mushroom dreg is by being mechanically pulverized, hot fermentation after addition microorganism,
Kill the microorganisms such as pest and the harmful bacteria in bacteria residue；Sediment of pond and mushroom dreg are mixed according to 1:1 ratio, as incubating
It is spare to change medium；
One layer of water plant of incubator Surface mulch is used for moisturizing.It depending on hatching medium dry and wet situation, irregularly sprinkles water, humidity maintains
60-70%.Test result is as follows:
| Hatching rate/% | Body length/cm | Weight/g | |
| Soil | 90.00a | 1.360a | 0.027a |
| Mushroom dreg+soil | 98.89b | 1.505b | 0.040b |
Note: with a line acceptance of the bid have significant difference between the average value of different lowercases (P<0.05)。
The experimental results showed that ovum cocoon hatching rate 9.88% can be improved in mushroom dreg+soil hatching medium.Mushroom dreg+soil
The young leech fry quality that hatching medium hatches is more high-quality, while can reduce artificial incubation eurysome golden thread leech ovum cocoon cost 20%.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improve and both falls in claimed range.The claimed scope of the invention is by appended claims and its equivalent
It defines.
Claims (9)
1. a kind of eurysome golden thread leech seed morning propagating and cultivating method, which comprises the following steps:
Step 1) produces cocoon platform building: using greenhouse breeding method, Yu Sanyue builds up kind of a leech breeding greenhouse, land occupation
1 mu of area, the low bank of earth between fields is built in greenhouse, low bank of earth between fields width is 1.2-1.5m, depth 0.4-0.5m, according to greenhouse length
Low bank of earth between fields length is designed, 1-1.2m is separated by between the adjacent low bank of earth between fields, anti-escape network is arranged in low bank of earth between fields bottom and surrounding, and wherein surrounding anti-escape network is high
1-1.5 m, anti-escape network edge extend the anti-escape side 0.1-0.2m；
Step 2, kind leech selection: preferably go out that body surface is not damaged, can shorten hemispherical leech into rapidly after energetic, touching makees
For standby parent, then therefrom select before weight 10% individual, as kind of a leech；
Step 3), kind leech are cultivated: kind leech is placed makes it climb into soil layer naturally on the low bank of earth between fields, and irregularly spills depending on soil layer dry and wet situation
Water keeps the humidity of setting, and water temperature mutually should be suitable for preventing soil internal difference in temperature from changing greatly with the soil moisture, generates kind of leech
Temperature difference stress reaction and damage；Greenhouse cultivation kind leech 300-500kg per acre, warm indoor culture 1 month, until April
Just, that is, ovum cocoon is harvested；Pay attention to inspecting periodically whether greenhouse has breakage in cultivating process, prevents roof leaking and temperature of shed violent
Variation；
Step 4), ovum cocoon are collected: the soil layer of the low bank of earth between fields being opened collection ovum cocoon, takes attention during ovum cocoon to handle with care, avoids
Ovum cocoon is destroyed, all operations during collection ovum cocoon are carried out in greenhouse；
Step 5), hatching medium: sediment of pond and mushroom dreg are mixed according to 1:1 ratio, as hatching medium；
Step 6), ovum cocoon hatching: using indoor hatching pattern, use the bubble chamber of long 58cm, width 48cm, high 20cm as hatching
Case；The hatching medium 2-3cm that tiling is obtained through step 5) in incubator bottom adds 500 grams of ovum cocoons collected through step 4), by ovum
Cocoon covers one layer of hatching medium, and 3cm hatching medium is covered above 500g ovum cocoon placing, depending on hatching medium dry and wet situation, no
Periodically watering, holding hatching medium humidity are 60%-70%；One layer of water plant is spread above hatching medium, is used for moisturizing and heat preservation；Ovum
Cocoon, which is hatched 20-25 days, obtains young leech；
Step 7), seedling culture: young leech is transferred to outdoor big pond in late April and is cultivated, young leech seed breeding density is
Every leech net cage 2-3 ten thousand, put 100,000 in a suitable place to breed per acre.
2. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 1),
Building main frame structure used by greenhouse is stainless steel tube, and the material that overcover uses is black and white dual-color plastic film,
And black side is outside, for absorbing heat, improves greenhouse internal temperature.
3. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 1),
Before building the low bank of earth between fields, pest and harmful bacteria in soil are removed using quick lime first, avoid damage to kind of leech breeding a place, ovum cocoon
Breakage etc., dosage is 60-80kg/ mus, then big in building greenhouse on the low bank of earth between fields using black and white film plastic cloth and its steel structure support
Canopy.
4. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 2,
Chosen seeds leech, weight should be controlled in 15-25g, and kind leech weight is directly proportional to the ovum cocoon weight of breeding, and ovum cocoon weight and seed
Quantity is directly proportional；Selecting kind of the leech time is mid-March.
5. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 5),
Sediment of pond is needed by drying, crushing, three steps of be sieved are used further to subsequent ovum cocoon and hatch, at the same mushroom dreg need by
It is mechanically pulverized and hot fermentation, kill bed mud and pest and harmful bacteria microorganism in bacteria residue, the two mixed proportion is not less than
4:6。
6. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 6),
Ovum cocoon disposing way should be laid in above hatching medium, cannot concentrate or multilayer is placed under no hatching medium spaced apart condition, prevent
Only ovum cocoon squeezes mutually, so that ovum cocoon is damaged, by Wen Bujun, causes ovum cocoon hatching rate to decline, one case incubator is to place ovum
Cocoon 0.75-1kg is advisable, and density should not be too large.
7. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 7),
Eel grass should be planted in leech net cage in a manner of potting, hydrilla verticillata or waterweed sink water water plant, play inhabited for seedling,
The effect hidden, cool down and purified water；Leech net cage bottom margin is equipped with weight, for fixing leech net cage position.
8. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 7),
The leech net cage of seedling culture is equipped with the anti-escape edge of 0.1-0.2m, prevents seedling from escaping from；Temperature is at 30 degree or less, pond water
0.6-0.8m is kept, when hot weather, Ying Jiashen pond water to 1m, while keeping water layer and leech net cage top edges at least
0.2m distance.
9. a kind of eurysome golden thread leech seed morning propagating and cultivating method according to claim 1, which is characterized in that in step 7),
It is capped with anti-bird net above leech net cage, prevents young leech from being caught by birds.
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| CN114128653A (en) * | 2021-11-26 | 2022-03-04 | 孙志刚 | Whitmania pigra Whitman cultivation water full-ecological operation system and cultivation method |
| CN118104590A (en) * | 2024-03-18 | 2024-05-31 | 哈尔滨流源农业科技有限公司 | Breeding method of wide-body gold thread medicinal leeches |
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