CN105486828B - The Accidental mortality method of aquaculture product - Google Patents
The Accidental mortality method of aquaculture product Download PDFInfo
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- CN105486828B CN105486828B CN201510874046.0A CN201510874046A CN105486828B CN 105486828 B CN105486828 B CN 105486828B CN 201510874046 A CN201510874046 A CN 201510874046A CN 105486828 B CN105486828 B CN 105486828B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
The invention discloses a kind of Accidental mortality methods of aquaculture product, including：1) monitoring point is selected；2) water quality sample is taken；3) water quality index measures and online water quality probe monitors；4) computational methods of mortality risk index, safety index；5) early warning determination method.The present invention mainly tracks the rate of change for causing crucial water quality index after aquatic products death, and it can be used to eliminate the negative effect that external environment variation is brought the dissolved oxygen and turbidity auxiliary data that judge whether aquatic products occur death, while monitoring with the amplitude of rate of change and influence.It is an advantage of the invention that it is suitable for most of aquaculture products, and strong antijamming capability, monitoring are fast.
Description
Technical field
The present invention relates to aquaculture field more particularly to a kind of Accidental mortality methods of aquaculture product.
Background technology
The aquatic products of cultivation are lived in water body, are not easy to be realized by raiser after disease has occurred in it, until fish disease is quick-fried
Hair so that raiser can just note abnormalities when the corpse of aquatic products death floats on the water surface.However as aquaculture product
Abundant, especially the famous-brand and high-quality special aquatic products such as mandarin fish, loach, paddlefish, swamp eel, freshwater shrimp, the corpse after death do not float on
The water surface.This is because the meat of the famous-brand and high-quality special aquatic products of these types is close, at the same it is most without fish bubble, when rotting after death
The corpse gas that bacterial decomposition generates cannot form buoyancy in fish is steeped makes corpse float.Since this physiological property is to famous-brand and high-quality special aquatic products
Product cultivation bring huge puzzlement, in process of production raiser be not aware that oneself cultivation kind when have occurred disease,
When cultured product is dead.Usually raiser has found that culture pond mouth can be sold without fish when doing the pool fish listing in the end of the year.
Invention content
It is an object of the invention to overcome the above-mentioned problems in the prior art, a kind of death of aquaculture product is provided
Monitoring method.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme：
A kind of Accidental mortality method of aquaculture product, includes the following steps：
1) according to the wind direction of culture pond mouth, selection measures the monitoring point of culture-pool water quality index；
2) online water quality probe is set at monitoring point, and takes water quality sample below the water surface of monitoring point；
3) in experimental determination water quality sample dissolved oxygen, sulfide and turbidity water quality index data；By online
Water quality probe obtains the monitoring data of Dissolved Oxygen in Water, sulfide, turbidity in real time；
4) water quality index data, monitoring data are updated to mortality risk index respectively, safety index calculation formula obtains
Mortality risk index, safety index,
The calculation formula of the mortality risk index is：
F=kO(Ot-Ot-n)+kS(St-St-n)+kH(Ht-Ht-n),
F represents mortality risk index in formula, and O represents dissolved oxygen content, and S represents sulfide, and H represents turbidity, t
The time is represented, n represents delay step-length, kO、kS、kHIt is the coefficient of dissolved oxygen, sulfide, turbidity, the k respectivelyO、kS、kHIt is
Conversion of measurement unit rate is multiplied by the contribution rate of dead number and is got by dissolved oxygen, sulfide, turbidity, i.e. kO=dissolved oxygen contribution rate
×0.01、kS=sulfide contribution rate, kH=turbidity contribution rate × -0.001；
The calculation formula of the safety index is：
A represents safety index in formula, and m represents monitoring number；
5) when mortality risk index F is more than safety index A, it is possible to determine that death has occurred in the aquaculture product of monitoring,
Warning is made to raiser by early warning system.
Above-mentioned online water quality probe includes that dissolved oxygen sensor probe, sulfide sensor probe and turbidity sensor are visited
Head.
Working principle of the present invention is as follows：
The water quality of breeding water body is not stop to change, and change of water quality rate is metastable.After aquatic products death
Corpse can be decomposed by anaerobic bacteria release hydrogen sulfide, ammonia, methane, carbon dioxide, mercaptan, cadaverine, putrescine, scatol etc. in water
Substance, to change the water quality index of breeding water body and the rate of change of water quality.The present invention mainly tracks sulfide water quality index
The change of rate of change amplitude, to judge whether aquatic products occur death, while the dissolved oxygen and turbidity that monitor can be used to disappear
Except the negative effect that extraneous environmental change is brought influences, such as rains, changes water, seine factor.
The beneficial effects of the invention are as follows：
1, generalization ability is strong, and the present invention does not carry out Accidental mortality just for a certain aquatic products, is suitable for most
Number aquatic products.
2, susceptibility is high, even minimal amount fish is dead, warning can be also made in early warning system.
3, strong antijamming capability often changes the manual operations such as water, seine, rainy, this hair although culture pond choma border is changeable
It is bright still to embody very strong anti-interference ability, the early warning of mistake will not be caused.
Specific implementation mode
The Accidental mortality method of aquaculture product described in the present embodiment, includes the following steps：
1) monitoring point is selected：The wind direction for observing culture pond mouth, close to downstream one third between the upstream and downstream of wind direction
And at the 1.5m~2m of bank for measure culture-pool water quality index monitoring point；
2) water quality sample is taken：The water acquisition of 1L is used when 9 points to 10 of morning at the 25cm~30cm of monitoring point underwater
Device takes the water quality sample of 1L；
3) measurement of water quality index：In laboratory, using test method standard number GB7489 iodometric determination water quality samples
Dissolved oxygen in this, using the sulfide in P-aminodimethylaniline Spectrophotometric Determination matter sample, using spectrophotometry
Measure the turbidity in water quality sample；
Online water quality probe monitors：It is popped one's head in by online water quality and measures water body dissolving at the 25cm~30cm of monitoring point underwater
The monitoring data of oxygen, sulfide, turbidity；
4) water quality index data, monitoring data are updated to mortality risk index respectively, safety index calculation formula obtains
Mortality risk index, safety index,
The calculation formula of the mortality risk index is：
F=kO(Ot-Ot-n)+kS(St-St-n)+kH(Ht-Ht-n),
F represents mortality risk index in formula, and O represents dissolved oxygen content, and S represents sulfide, and H represents turbidity, t
The time is represented, n represents delay step-length, kO、kS、kHIt is the coefficient of dissolved oxygen, sulfide, turbidity respectively., the kO、kS、kHIt is
Conversion of measurement unit rate is multiplied by the contribution rate of dead number and is got by dissolved oxygen, sulfide, turbidity, i.e. kO=dissolved oxygen contribution rate
×0.01、kS=sulfide contribution rate, kH=turbidity contribution rate × -0.001；
The calculation formula of the safety index is：
A represents safety index in formula, and m represents monitoring number；
5) when mortality risk index F is more than safety index A, it is possible to determine that death has occurred in the aquaculture product of monitoring,
Warning is made to raiser by early warning system.
The method of the present invention generalization ability is strong, does not carry out Accidental mortality just for a certain aquatic products, is suitable for big
Most aquatic products.With very strong anti-interference ability, inventor has monitored 11 culture ponds on Hefei, Ningguo, Taihu County and other places
Mouthful, in 2014~2,015 two years supervised periods, the accuracy of monitoring is 92.3%.Monitoring is quick, and monitoring method of the present invention exists
When popping one's head in using online water quality, it can determine whether culture pond saliva product occurs death in 5 minutes.
Claims (2)
1. a kind of Accidental mortality method of aquaculture product, which is characterized in that include the following steps：
1) according to the wind direction of culture pond mouth, selection measures the monitoring point of breeding water body water quality index；
2) online water quality probe is set at monitoring point, and takes water quality sample below the water surface of monitoring point；
3) in experimental determination water quality sample dissolved oxygen, sulfide and turbidity water quality index data；Pass through online water quality
Probe obtains the monitoring data of Dissolved Oxygen in Water, sulfide, turbidity in real time；
4) water quality index data, monitoring data are updated to mortality risk index respectively, safety index calculation formula obtains death
Risk index, safety index,
The calculation formula of the mortality risk index is：
F=kO(Ot-Ot-n)+kS(St-St-n)+kH(Ht-Ht-n),
F represents mortality risk index in formula, and O represents dissolved oxygen content, and S represents sulfide, and H represents turbidity, and t is represented
Time, n represent delay step-length, kO、kS、kHIt is the coefficient of dissolved oxygen, sulfide, turbidity, the k respectivelyO、kS、kHIt is by molten
Solution oxygen, sulfide, turbidity are multiplied by Conversion of measurement unit rate to the contribution rate of dead number and get, i.e. kO=dissolved oxygen contribution rate ×
0.01、kS=sulfide contribution rate, kH=turbidity contribution rate × -0.001；
The calculation formula of the safety index is：
A represents safety index in formula, and m represents monitoring number；
5) when mortality risk index F is more than safety index A, it is possible to determine that death has occurred in the aquaculture product of monitoring, passes through
Early warning system makes warning to raiser.
2. the Accidental mortality method of aquaculture product according to claim 1, which is characterized in that the online water quality probe
Including dissolved oxygen sensor probe, sulfide sensor probe and turbidity sensor probe.
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Effective date of registration: 20190724 Address after: Hefei City, Anhui Province Agricultural Road 230031 No. 40 Patentee after: Anhui Academy of Agricultural Sciences Sea Fisheries Research Institute Address before: 230000 Ninth Floor, Innovation Building, 40 South Agricultural Road, Hefei City, Anhui Province Patentee before: Wang Xiang |
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