CN112154950A - Early breeding method for crayfish seedlings in rice field - Google Patents
Early breeding method for crayfish seedlings in rice field Download PDFInfo
- Publication number
- CN112154950A CN112154950A CN202010985185.1A CN202010985185A CN112154950A CN 112154950 A CN112154950 A CN 112154950A CN 202010985185 A CN202010985185 A CN 202010985185A CN 112154950 A CN112154950 A CN 112154950A
- Authority
- CN
- China
- Prior art keywords
- months
- rice
- crayfish
- field
- feeding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention discloses a method for early breeding crayfish seedlings in a rice field, which is used for constructing field engineering suitable for breeding crayfish in the rice field, wherein rice seedlings are planted in the middle and the last days of 5 months in the rice field for 7-8 months, 15-20 kg of parent crayfish with the specification of 20-30 heads/kg is put in each mu, rice is harvested in the last ten days of 9 months, water is fed into the rice field in the last ten days of 9 months, crayfish seedling breeding work is carried out, feed is kept to be fed in winter, and crayfish seedlings are sold in the next 3 months. The invention solves the problem of crayfish early seedling shortage and has great significance for promoting the development of crayfish industry.
Description
Technical Field
The invention relates to an early propagation method of crayfish seedlings, belongs to the field of propagation of the crayfish seedlings in a rice field, and particularly relates to an early propagation method of the crayfish seedlings in the rice field under the condition of normally planting rice.
Background
Jiangsu is a big province for culturing shrimps in rice fields in China, crayfish fries are bred in the rice fields in Jiangsu areas, the fries can be sold only in the middle of 4 months, and a large amount of grown shrimps are sold in the market after the shrimps are sold in the middle of 5 months, so that the price of the grown shrimps is greatly reduced, and the enthusiasm of farmers is seriously influenced. The adult shrimps on the market before ten days in the middle of 5 months are high in price, and the culture profit margin is large. In order to sell adult shrimps in the middle of 5 months, the crayfish fries are put in the paddy field before the bottom of 3 months. At present, only two modes, namely a lotus root pond and a greenhouse, can provide shrimp seeds in 3 months, and the two modes are limited in scale and far from meeting the requirements of farmers, so that a simple and feasible crayfish seed early propagation technology is urgently needed in the market.
Disclosure of Invention
The invention aims to: provides a method for early breeding of rice field crayfish seedlings, solves the problem of crayfish seedling shortage in early breeding, and accelerates farmers to get rich and run to the good.
The invention adopts the following technical scheme: constructing field engineering suitable for breeding crayfishes in a rice field; transplanting rice seedlings in the middle and last ten days of the 5-month rice field; 10-20 kg of parent shrimps with the specifications of 30-40 heads/kg are stocked per mu in 7-8 months; harvesting the rice in the last 9 th month; feeding water to the rice field in the last ten days of the month 9, and carrying out crayfish seedling cultivation work; keeping feeding in winter, and starting to sell crayfish fries in the middle 3 months of the next year.
The method for early breeding the crayfish fries in the rice field comprises the following specific steps:
the method comprises the following steps: engineering construction of rice field
1. Selection of rice field
Sufficient water source, good water quality, no pollution around, convenient irrigation and drainage,
Rice field with good water-retaining property;
2. transformation of rice field
2.1, shrimp ditch excavation: at a distance of 1.5 to 2 meters from the inner side of the paddy field ridge,
excavating an annular ditch along the periphery of the inner side of the ridge, wherein the upper opening of the annular ditch is 2-5 meters wide and 1-2 meters deep, the bottom of the ditch is 1-2 meters wide, the slope ratio of the ridge is 1:2.5, and the area of the annular ditch accounts for 10% of the area of the rice field; laying a pipeline in a circular ditch at one side close to a production road for 3-4 meters, and laying a road on the pipeline to serve as a passage for machinery to enter and exit a field;
2.2 water inlet and drainage facilities: the water inlet and the water outlet are selected at two opposite corners of the rice field, the water inlet is at the highest position of the rice field, and the water outlet is at the lowest position of the rice field; the water inlet is tied with a long mesh bag of 4 m made of 40 mesh silk cloth, and the water outlet is provided with a double-layer dense mesh of 20 meshes;
2.3 escape-proof facilities: setting a fence on the ridge, wherein the height of the fence is 40-50 cm, a nylon mesh is used as a fence material, and plastic paper with the width of 30cm is sewn at the upper end of the nylon mesh; fixing the crayfish by using bamboo poles every 5-6 m, burying the lower end of the net piece into the soil for 15 cm, and enclosing the corners of the field pieces into an arc shape to prevent the crayfish from escaping;
step two: cultivation and management of rice
1. Selection of rice varieties
Planting rice in 5-month middle ten days with planting distance of 23 cm × 26.7 cm in early rice variety Quanliangli silk seedling by manual or mechanical transplanting;
2. management of field
2.1 fertilization: in the rice growing season, 2 times of fertilizer application are carried out, and 6 times of fertilizer application are carried out once
In the middle ten days of the month, the other time is at the beginning of 7 months, and mainly comprises nitrogen fertilizer and compound fertilizer;
2.2 insect pest control: the whole rice planting process uses the Kangwu Henggang rice
Once for each case of mycin;
2.3, field baking: roasting for 7-10 days in late 8 months;
step three: crayfish fry breeding method
1. Ring ditch disinfection and aquatic weed transplantation: at the end of 3 months, 150kg of quicklime is used for thoroughly disinfecting the shrimp ditches per mu; at the beginning of 4 months, the waterweeds are transplanted in the ring ditch, and the plant spacing is 3 m;
2. stocking parent crayfishes of crayfishes: 8 last ten days of the month, selecting sunny morning mu
Breeding 15-20 kg of parent shrimps, wherein the parent shrimps are 30-40 tails/kg and female parent: the male sex is =3: 1; when in stocking, firstly, the seedlings are revived, the parent shrimps are put into water to be soaked for 1-2 minutes, then the parent shrimps are fished out to stand for 5-10 minutes and then are soaked into the water for 1-2 minutes, and the steps are repeated for 2-3 times until all gills of the crayfish suck water, and then the parent shrimps are put to the bank side of the circular groove along the circular groove to enable the parent shrimps to climb into the water by themselves; before parent shrimps are put in the pond, sprinkling emergency agent in the ring ditch;
3. harvesting and watering rice: harvesting the rice in the last ten days of 9 months, leaving 30 stubbles
Centimeters; the bottom of the 9 months, the water is 10 cm above the rice field;
4. building a shrimp culture environment: transplanting the waterweeds 3-4 meters away from the ring furrow on the field surface, wherein the plant spacing is multiplied by the row spacing =8 meters by 10 meters;
5. shrimp field management
5.1, feeding the feed: feeding fodder with the protein content of 36% when shrimp seedlings are seen in the rice field in 10-11 months, feeding 0.5kg per mu once a day, and gradually increasing the feeding amount along with the growth of the shrimps; feeding once a week after the winter is reached from 12 months to 2 months in the next year, feeding at 1-2 o' clock in the afternoon with warm sunshine, feeding 0.5-1 kg per mu, and selecting fermented rapeseed meal and soybean meal as feed; feeding for 1 time every 3 months in the next year, and feeding for 5:00 in the afternoon; feeding 2 times in the next 4 months, wherein the feeding time is 1 time each of 8:00 in the morning and 5:00 in the afternoon, the daily feeding amount accounts for 2-5% of the crayfish amount in the rice field, the feeding amount accounts for 30% of the daily feeding amount in the morning, the feeding amount accounts for 70% of the daily feeding amount in the afternoon, and the specific feeding amount is flexibly mastered according to the weather and the eating condition;
5.2 water level control: the water level of the rice field is controlled to be 30cm in 10-11 months
The rice stump regeneration is promoted; increasing the water level to 40-50 cm from 12 months to 2 months in the next year, and preventing the crayfish from being frostbitten; in the next 3 months, the water level is reduced to about 30cm along with the rising of the air temperature, so that the water temperature of the rice field is promoted to be increased;
6. catching the shrimp larvae: in the next trimester, when the crayfish grows to 400 tails/kg, the crayfish is caught and sold by a ground cage net.
The invention has the following advantages:
1. according to the invention, rice planting and crayfish seedling breeding are effectively jointed in a space-time mode, the rice harvesting time is about 30-50 days earlier than that of conventional rice, the rice field watering time is also 30-50 days earlier, the produced crayfish seedlings can be sold in 3 middle of the month, and the time of marketing is about 30 days earlier than that of the crayfish seedlings in the conventional rice field.
2. The crayfish fries are also fed with feed in winter, and are mainly fed with fermented soybean meal and rapeseed meal.
3. The yield of the crayfish fries produced by the invention is more than 1.5 times of the yield of the crayfish fries produced in the conventional rice field.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific examples. It will be understood that these examples are intended to illustrate the invention and are not intended to limit the scope of the invention in any way.
Example 1: the crayfish fry early propagation is carried out according to the following steps
The method comprises the following steps: engineering construction of rice field
(1) Selecting a rice field: selecting 40 mu of rice field with sufficient water source, good water quality, no pollution around, convenient irrigation and drainage and good water retention;
(2) excavating a shrimp ditch: excavating annular ditches along the periphery of the inner side of the ridge at a distance of 1.5 meters from the inner side of the ridge of the rice field, wherein the upper opening of each annular ditch is 3.9 meters wide and 1 meter deep, the bottom of each annular ditch is 1.5 meters wide, the ridge slope ratio is 1:2.4, and the area of each annular ditch accounts for 10 percent of the area of the rice field; laying a pipeline for 4 meters in a circular ditch on one side close to a production road, and laying a road on the pipeline as a channel for machinery to enter and exit a field;
(3) water inlet and drainage facilities: the water inlet and the water outlet are selected at two opposite corners of the rice field, the water inlet is at the highest position of the rice field, and the water outlet is at the lowest position of the rice field; the water inlet is tied with a long mesh bag of 4 m made of 40 mesh silk cloth, and the water outlet is provided with a double-layer dense mesh of 20 meshes;
(4) escape-proof facilities: setting a fence on the ridge, wherein the height of the fence is 45 cm, a nylon net sheet is used as a fence material, and plastic paper with the width of about 30cm is sewn at the upper end of the nylon net sheet; fixing the crayfish by using bamboo poles every 5 m, burying the lower end of the net piece into the ground by about 15 cm, and enclosing the corners of the field to form an arc shape so as to avoid the crayfish from escaping;
step two: cultivation and management of rice
(1) Selecting rice varieties: selecting the early rice variety Quanliangli Si Miao, 5
Planting rice in 15 days per month with a row spacing of 23 cm multiplied by 26.7 cm, and adopting a mode of manually planting seedlings;
(2) management of field
Fertilizing: in the rice growing season, 2 times of fertilizer application are carried out, and one time is 6 months
15 days, and another 5 days in 7 months, wherein the main raw materials are nitrogen fertilizer and compound fertilizer;
pest control: in the whole rice planting process, the kangda and the jinggangmycin are used for one time respectively;
baking the field: 8, 28 days in month and 10 days in field;
step three: crayfish fry breeding method
(1) Ring ditch disinfection and aquatic weed transplantation: 150Kg of the powder is used for each mu at the end of 3 months
The quick lime thoroughly disinfects the shrimp ditch; at the beginning of 4 months, the waterweeds are transplanted in the ring ditch, and the plant spacing is 3 m;
(2) stocking parent crayfishes of crayfishes: 8 months and 8 days, and selecting sunny morning
20kg of parent shrimps are stocked per mu, and the specification of the parent shrimps is 30-40 shrimps/kg; when in stocking, firstly, the seedlings are revived, the parent shrimps are put into water to be soaked for 1-2 minutes, then the parent shrimps are fished out to stand for 5-10 minutes and then are soaked into the water for 1-2 minutes, and the steps are repeated for 2-3 times until all gills of the crayfish suck water, and then the parent shrimps are put to the bank side of the circular groove along the circular groove to enable the parent shrimps to climb into the water by themselves; VE is splashed in the circular ditch before the parent shrimps are put in the field to prevent and control the crayfishes from generating emergency reaction;
(3) harvesting and watering rice: harvesting rice in 9 months and 8 days
30cm of stubble; after 9 months and 28 days, the rice field is watered by 10 cm;
(4) building a shrimp culture environment: moving 3-4 meters away from the circular ditch on the field surface
Planting the waterweeds, wherein the plant spacing is multiplied by the row spacing =8 m multiplied by 10 m;
(5) shrimp field management
Feeding the feed: after 18 days in 10 months, when shrimp seedlings appear in the rice field, feeding the feed (the protein content is 36 percent), feeding 0.5kg per mu once a day, and gradually increasing the feeding amount along with the growth of the shrimps; feeding once a week after winter (12 months to 2 months next year), feeding at 1-2 o' clock in the afternoon with warm sunshine, feeding 0.5kg per mu, and selecting fermented rapeseed meal and soybean meal as feed in a ratio of 2: 1; feeding for 1 time every 3 months in the next year, and feeding for 5:00 in the afternoon; feeding 2 times in 4 months next year, wherein the feeding amount in each day is 2-5% of the crayfish in the rice field at 8:00 am and 1 time at 5:00 pm, the feeding amount in each morning is 30% of the feeding amount in each day, and the feeding amount in each afternoon is 70% of the feeding amount in each day; the specific feeding amount is flexibly mastered according to weather and eating conditions;
controlling the water level: controlling the water level of the rice field to be about 30cm in 10-11 months to promote the regeneration of rice stumps; increasing the water level to 40-50 cm from 12 months to 2 months in the next year, and preventing the crayfish from being frostbitten; in the next 3 months, the water level is reduced to about 30cm along with the rising of the air temperature, so that the water temperature of the rice field is promoted to be increased;
(6) catching the shrimp larvae: and (5) fishing and selling the crayfishes by using a ground cage net when the crayfishes grow to 400 tails/kg in 15 days in 3 months next year.
Example 2: the crayfish fry early propagation is carried out according to the following steps
The method comprises the following steps: engineering construction of rice field
(1) Selecting a rice field: selecting 50 mu of rice field with sufficient water source, good water quality, no pollution around, convenient irrigation and drainage and good water retention;
(2) excavating a shrimp ditch: excavating annular ditches along the periphery of the inner side of the ridge at a distance of 2 meters from the inner side of the ridge of the rice field, wherein the upper openings of the annular ditches are 4.5 meters wide and 1 meter deep, the ditch bottoms are 2 meters wide, the ridge slope ratio is 1:2.5, and the area of the annular ditches accounts for 10 percent of the area of the rice field; laying a pipeline for 4 meters in a circular ditch on one side close to a production road, and laying a road on the pipeline as a channel for machinery to enter and exit a field;
(3) water inlet and drainage facilities: the water inlet and the water outlet are selected at two opposite corners of the rice field, the water inlet is at the highest position of the rice field, and the water outlet is at the lowest position of the rice field; the water inlet is tied with a long mesh bag of about 4 m made of 40 mesh silk cloth, and the water outlet is provided with a double-layer dense mesh of 20 meshes;
(4) escape-proof facilities: setting a fence with the height of 40 cm on the ridge, using a nylon net sheet as a fence material, and sewing plastic paper with the width of about 30cm on the upper end of the nylon net sheet; fixing the crayfish by using bamboo poles every 5 m, burying the lower end of the net piece into the ground by about 15 cm, and enclosing the corners of the field to form an arc shape so as to avoid the crayfish from escaping;
step two: cultivation and management of rice
(1) Selecting rice varieties: selecting the early rice variety Quanliangli Si Miao, 5
Planting rice in 11 days per month with a row spacing of 23 cm × 26.7 cm, and manually planting seedlings;
(2) management of field
Fertilizing: in the rice growing season, 2 times of fertilizer application are carried out, wherein one time is 7 months and 18 days, and the other time is 8 months and 1 day, and mainly comprises nitrogen fertilizer and compound fertilizer;
pest control: in the whole rice planting process, the kangbai and the jinggangmycin are used once respectively;
baking the field: 8, 28 days in month and 12 days in field;
step three: crayfish fry breeding method
(1) Ring ditch disinfection and aquatic weed transplantation: 3 months and 25 days, and is used per mu
150Kg of quicklime thoroughly disinfects the shrimp ditch; 1 day 4 months, transplanting the waterweeds in the annular ditch, wherein the plant spacing is 3 meters;
(2) stocking parent crayfishes of crayfishes: 8 month and 5 days, selecting sunny morning
20kg of parent shrimps are stocked per mu, and the specification of the parent shrimps is about 30 shrimps/kg; when in stocking, firstly, the seedlings are revived, the parent shrimps are put into water to be soaked for 1-2 minutes, then the parent shrimps are fished out to stand for 5-10 minutes and then are soaked into the water for 1-2 minutes, and the steps are repeated for 2-3 times until all gills of the crayfish suck water, and then the parent shrimps are put to the bank side of the circular groove along the circular groove to enable the parent shrimps to climb into the water by themselves; before parent shrimps are put in the pond, sprinkling emergency agent in the ring ditch;
(3) harvesting and watering rice: harvesting the rice in 9 months and 10 days, and leaving 30cm of stubble; after 9 months and 30 days, the rice field is watered by 10 cm;
(4) building a shrimp culture environment: transplanting the waterweeds on the field surface 4 meters away from the ring furrow, wherein the plant spacing is multiplied by the row spacing =8 meters and multiplied by 10 meters;
(5) shrimp field management
Feeding the feed: 10, 22 days, when shrimp seedlings appear in the rice field, feeding the feed (the protein content is 36 percent), feeding 0.5kg per mu once a day, and gradually increasing the feeding amount along with the growth of the shrimps; feeding once a week after winter (12 months to 2 months next year), feeding 1kg per mu at 1-2 pm in warm sunshine, and selecting fermented rapeseed meal and soybean meal as feed in a ratio of 2: 1; feeding 1 time daily in 3 months next year, feeding 5:00 in the afternoon, feeding 2 times daily in 4 months next year, feeding 8:00 in the morning and 1 time each in 5:00 in the afternoon, wherein the daily feeding amount accounts for 2-5% of the crayfish in the rice field, the morning feeding amount accounts for 30% of the daily feeding amount, and the afternoon feeding amount accounts for 70% of the daily feeding amount; the specific feeding amount is flexibly mastered according to weather and eating conditions;
controlling the water level: controlling the water level of the rice field to be about 30cm in 10-11 months to promote the regeneration of rice stumps; increasing the water level to 40-50 cm from 12 months to 2 months in the next year, and preventing the crayfish from being frostbitten; in the next 3 months, the water level is reduced to about 30cm along with the rising of the air temperature, so that the water temperature of the rice field is promoted to be increased;
(6) catching the shrimp larvae: and 16 days in 3 months next year, the crayfishes grow to 400 crayfishes/kg, and are caught by a ground cage net for sale.
Example 3: the crayfish fry early propagation is carried out according to the following steps
The method comprises the following steps: engineering construction of rice field
1. Selecting a rice field: selecting 60 mu of rice field with sufficient water source, good water quality, no pollution around, convenient irrigation and drainage and good water retention;
2. transformation of rice field
2.1, shrimp ditch excavation: excavating annular ditches along the periphery of the inner side of the ridge at a distance of 2 meters from the inner side of the ridge of the rice field, wherein the upper openings of the annular ditches are 4.85 meters wide and 1 meter deep, the ditch bottoms are 2 meters wide, the ridge slope ratio is 1:2.5, and the area of the annular ditches accounts for 10 percent of the area of the rice field; laying a pipeline for 4 meters in a circular ditch on one side close to a production road, and laying a road on the pipeline as a channel for machinery to enter and exit a field;
2.2 water inlet and drainage facilities: the water inlet and the water outlet are selected at two opposite corners of the rice field, the water inlet is at the highest position of the rice field, and the water outlet is at the lowest position of the rice field; the water inlet is tied with a long mesh bag of about 4 m made of 40 mesh silk cloth, and the water outlet is provided with a double-layer dense mesh of 20 meshes;
2.3 escape-proof facilities: setting a fence with the height of 50cm on the ridge, using a nylon net sheet as a fence material, and sewing plastic paper with the width of about 30cm on the upper end of the nylon net sheet; fixing the crayfish by bamboo poles every 6 m, burying the lower end of the net sheet into the ground by about 15 cm, and enclosing the corners of the field to form an arc shape so as to avoid the crayfish from escaping;
step two: cultivation and management of rice
1. Selecting rice varieties: selecting the early rice variety Quanliangli Si Miao, 5
Planting rice in 18 days per month with a row spacing of 23 cm × 26.7 cm, and mechanically transplanting rice seedlings;
2. management of field
2.1 fertilization: in the rice growing season, 2 times of fertilizer application are carried out, and 6 times of fertilizer application are carried out once
At 18 days a month and at 9 days 7 months for another time, mainly nitrogen fertilizer and compound fertilizer;
2.2 insect pest control: in the whole rice planting process, the kangda and the jinggangmycin are used for one time respectively;
2.3, field baking: 8, 25 days in month and 15 days in field;
step three: crayfish fry breeding method
1. Ring ditch disinfection and aquatic weed transplantation: 150Kg of the product is used for 3 months and 30 days per mu
The quick lime thoroughly disinfects the shrimp ditch; 4, 5 days in the month of 4, transplanting the waterweeds in the annular ditch, wherein the plant spacing is 3 meters;
2. stocking parent crayfishes of crayfishes: 8, 1 day in the month, selecting sunny morning mu
20kg of parent shrimps are stocked, and the specification of the parent shrimps is about 30 shrimps/kg; when in stocking, firstly, the seedlings are revived, the parent shrimps are put into water to be soaked for 1-2 minutes, then the parent shrimps are fished out to stand for 5-10 minutes and then are soaked into the water for 1-2 minutes, and the steps are repeated for 2-3 times until all gills of the crayfish suck water, and then the parent shrimps are put to the bank side of the circular groove along the circular groove to enable the parent shrimps to climb into the water by themselves; before parent shrimps are put in the pond, sprinkling emergency agent in the ring ditch;
3. harvesting and watering rice: harvesting the rice in 9 months and 9 days, and leaving 30cm of stubble; in the last ten days of 10 months, the rice field is watered by 10 cm;
4. building a shrimp culture environment: transplanting Yile in field surface 4 m away from ring ditch
Algae, plant spacing x row spacing =8 m x 10 m;
5. shrimp field management
5.1, feeding the feed: 10 months and 2 days, when shrimp seedlings appear in the rice field, feeding the feed (the protein content is 36 percent), feeding 0.5kg per mu once a day, and gradually increasing the feeding amount along with the growth of the shrimps; feeding once a week after winter (12 months to 2 months next year), feeding at 1-2 o' clock in the afternoon with warm sunshine, feeding 0.5-1 kg per mu, and selecting fermented rapeseed meal and soybean meal as feed in a ratio of 2: 1; feeding 1 time daily in 3 months next year, feeding 5:00 in the afternoon, feeding 2 times daily in 4 months next year, feeding 8:00 in the morning and 1 time each in 5:00 in the afternoon, wherein the daily feeding amount accounts for 2-5% of the crayfish in the rice field, the morning feeding amount accounts for 30% of the daily feeding amount, and the afternoon feeding amount accounts for 70% of the daily feeding amount; the specific feeding amount is flexibly mastered according to weather and eating conditions;
5.2 water level control: the water level of the rice field is controlled to be 30cm in 10-11 months
The rice stump regeneration is promoted; increasing the water level to 40-50 cm from 12 months to 2 months in the next year, and preventing the crayfish from being frostbitten; in the next 3 months, the water level is reduced to about 30cm along with the rising of the air temperature, so that the water temperature of the rice field is promoted to be increased;
6. catching the shrimp larvae: and (4) fishing and selling the crayfish when the crayfish grows to 400 tails/kg by using a ground cage net in 18 days in 3 months next year.
The culture profits are detailed in table 1:
table 1: productive benefit table for early breeding crayfish
Table 2: crayfish early breeding seedling production cost table (mu is unit)
Claims (8)
1. The early breeding method of the crayfish fries in the rice field is characterized by comprising the following steps: constructing field engineering suitable for culturing crayfishes in a rice field, and transplanting rice seedlings in the middle and last ten days of 5 months in the rice field; 10-20 kg of parent shrimps with the breeding specification of 30-40 heads/kg per mu in 7-8 months; harvesting the rice in the last 9 th month; feeding water to the rice field in the last ten days of the month 9, and carrying out crayfish seedling cultivation work; keeping feeding in winter, and selling crayfish fries in the next 3 months.
2. The method for early breeding of the crayfish fries in the paddy field as claimed in claim 1, wherein the method for early breeding specifically comprises the following steps:
the method comprises the following steps: engineering construction in the field
(1) Selecting a rice field: selecting a rice field with sufficient water source, good water quality, no pollution around, convenient irrigation and drainage and good water-retaining property;
(2) transformation of rice field
Excavating a shrimp ditch: excavating annular ditches along the periphery of the inner side of the ridge at a distance of 1.5-2 meters from the inner side of the ridge of the rice field, wherein the upper opening of each annular ditch is 2-5 meters wide and 1-2 meters deep, the bottom of each ditch is 1-2 meters wide, the slope ratio of the ridge is 1:2.5, and the area of each annular ditch accounts for 10% of the area of the rice field; laying a pipeline in a circular ditch at one side close to a production road for 3-4 meters, and laying a road on the pipeline to serve as a passage for machinery to enter and exit a field;
water inlet and drainage facilities: the water inlet and the water outlet are selected at two opposite corners of the rice field, the water inlet is at the highest position of the rice field, and the water outlet is at the lowest position of the rice field; the water inlet is tied with a long mesh bag of about 4 m made of 40 mesh silk cloth, and the water outlet is provided with a double-layer dense mesh of 20 meshes;
escape-proof facilities: a fence is arranged on the ridge, the height of the fence is 40-50 cm, a nylon net sheet is used as a fence material, and plastic paper with the width of about 30cm is sewn at the upper end of the nylon net sheet.
3. Fixing the crayfish by using bamboo poles every 5-6 m, burying the lower end of the net piece into the ground by about 15 cm, and enclosing the corners of the field to form an arc shape so as to avoid the crayfish from escaping;
step two: cultivation and management of rice
(1) Selecting rice varieties: selecting the early rice variety Quanliangli Si Miao, 5
Planting rice in the middle ten days of the month, wherein the row spacing is 23 cm multiplied by 26.7 cm, and adopting a mode of artificial planting or mechanical seedling planting;
(2) management of field
Fertilizing: in the rice growing season, 2 times of fertilizers are applied, one time is in the middle of 6 months, and the other time is in the beginning of 7 months, and nitrogen fertilizers and compound fertilizers are mainly applied;
pest control: in the whole rice planting process, the kangbai and the jinggangmycin are used once respectively;
baking the field: 10-15 days in late 8 months;
step three: crayfish fry breeding method
(1) Ring ditch disinfection and aquatic weed transplantation: 150kg per mu at the end of 3 months
The quick lime thoroughly disinfects the shrimp ditch; at the beginning of 4 months, the waterweeds are transplanted in the ring ditch, and the plant spacing is 3 m;
(2) stocking parent crayfishes of crayfishes: 8 last ten days of the month, select sunny morning
15-20 kg of parent shrimps are bred per mu, and the specifications of the parent shrimps are 30-40 tails/kg and female parent: the male sex is =3: 1; when in stocking, firstly, the seedlings are revived, the parent shrimps are put into water to be soaked for 1-2 minutes, then the parent shrimps are fished out to stand for 5-10 minutes and then are soaked into the water for 1-2 minutes, and the steps are repeated for 2-3 times until all gills of the crayfish suck water, and then the parent shrimps are put to the bank side of the circular groove along the circular groove to enable the parent shrimps to climb into the water by themselves; before parent shrimps are put in the pond, sprinkling emergency agent in the ring ditch;
(3) harvesting and watering rice: harvesting rice in the beginning of 9 months with 30 stubbles
Centimeters; the bottom of the 9 months, the water is 10 cm above the rice field;
(4) building a shrimp culture environment: transplanting the waterweeds 3-4 meters away from the ring furrow on the field surface, wherein the plant spacing is multiplied by the row spacing =8 meters by 10 meters;
(5) shrimp field management
Feeding the feed: feeding fodder with the protein content of 36% when shrimp seedlings are seen in the rice field in 10-11 months, feeding 0.5kg per mu once a day, and gradually increasing the feeding amount along with the growth of the shrimps; feeding once a week after the winter is reached from 12 months to 2 months in the next year, feeding at 1-2 o' clock in the afternoon with warm sunshine, feeding 0.5-1 kg per mu, and selecting fermented rapeseed meal and soybean meal as feed; feeding for 1 time every 3 months in the next year, and feeding for 5:00 in the afternoon; feeding 2 times in 4 months next year, wherein the feeding amount in each day is 2-5% of the crayfish in the rice field at 8:00 am and 1 time at 5:00 pm, the feeding amount in each morning is 30% of the feeding amount in each day, and the feeding amount in each afternoon is 70% of the feeding amount in each day; the specific feeding amount is flexibly mastered according to weather and eating conditions;
controlling the water level: controlling the water level of the rice field to be about 30cm in 10-11 months to promote the regeneration of rice stumps; increasing the water level to 40-50 cm from 12 months to 2 months in the next year, and preventing the crayfish from being frostbitten; in the next 3 months, the water level is reduced to about 30cm along with the rising of the air temperature, so that the water temperature of the rice field is promoted to be increased;
(6) catching the shrimp larvae: in the next trimester, when the crayfish grows to 400 tails/kg, the crayfish is caught by a ground cage net for sale.
4. The method for early breeding of the crayfish fries in the paddy field as claimed in claim 2, which is characterized in that: and on the premise of normally planting rice, carrying out early propagation of crayfish seedlings.
5. The method for early breeding of the crayfish fries in the paddy field as claimed in claim 2, which is characterized in that: the rice variety is selected from Quanliangyousi seedling.
6. The method for early breeding of the crayfish fries in the paddy field as claimed in claim 2, which is characterized in that: in 7-8 months, 15-20 kg of crayfish parents per mu are released: male parent =3:1, female parent shrimps 40 g/female parent shrimps 45 g/female parent shrimps.
7. The method for early breeding of the crayfish fries in the paddy field as claimed in claim 2, which is characterized in that: and (5) feeding water to the rice field in the last ten days of the 9 months, and carrying out crayfish seedling breeding work.
8. The method for early breeding of the crayfish fries in the paddy field as claimed in claim 2, which is characterized in that: in winter from 12 months to 2 months in the next year, the feed is fed once a week, the feed selects fermented rapeseed meal and soybean meal, and the mixing ratio of the rapeseed meal to the soybean meal is 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985185.1A CN112154950A (en) | 2020-09-18 | 2020-09-18 | Early breeding method for crayfish seedlings in rice field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985185.1A CN112154950A (en) | 2020-09-18 | 2020-09-18 | Early breeding method for crayfish seedlings in rice field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112154950A true CN112154950A (en) | 2021-01-01 |
Family
ID=73859112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010985185.1A Pending CN112154950A (en) | 2020-09-18 | 2020-09-18 | Early breeding method for crayfish seedlings in rice field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112154950A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113875661A (en) * | 2021-09-26 | 2022-01-04 | 浙江大学 | Comprehensive planting and breeding method of rice-crayfish-macrobrachium nipponensis |
| CN114532265A (en) * | 2022-02-22 | 2022-05-27 | 江苏虹州农业发展有限公司 | Efficient comprehensive breeding and separating method for rice and shrimp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060091130A (en) * | 2005-02-14 | 2006-08-18 | 김현철 | Rice field structure with pond |
| KR20080105319A (en) * | 2007-05-30 | 2008-12-04 | 이영선 | Manufacturing method of nutritious artificial reef using rice power and food waste |
| CN103931450A (en) * | 2014-04-25 | 2014-07-23 | 全椒县赤镇龙虾经济专业合作社 | Method for breeding rice flower crawfishes in rice field |
| CN106416861A (en) * | 2016-08-31 | 2017-02-22 | 陈冬林 | Procambarus clarkii and paddy rice continuous cropping plant-livestock method realizing grain yield stabilizing and fish yield increasing effect |
| CN111418532A (en) * | 2020-05-06 | 2020-07-17 | 陈晓方 | Method for layered breeding of crayfish fries in rice field |
-
2020
- 2020-09-18 CN CN202010985185.1A patent/CN112154950A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060091130A (en) * | 2005-02-14 | 2006-08-18 | 김현철 | Rice field structure with pond |
| KR20080105319A (en) * | 2007-05-30 | 2008-12-04 | 이영선 | Manufacturing method of nutritious artificial reef using rice power and food waste |
| CN103931450A (en) * | 2014-04-25 | 2014-07-23 | 全椒县赤镇龙虾经济专业合作社 | Method for breeding rice flower crawfishes in rice field |
| CN106416861A (en) * | 2016-08-31 | 2017-02-22 | 陈冬林 | Procambarus clarkii and paddy rice continuous cropping plant-livestock method realizing grain yield stabilizing and fish yield increasing effect |
| CN111418532A (en) * | 2020-05-06 | 2020-07-17 | 陈晓方 | Method for layered breeding of crayfish fries in rice field |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113875661A (en) * | 2021-09-26 | 2022-01-04 | 浙江大学 | Comprehensive planting and breeding method of rice-crayfish-macrobrachium nipponensis |
| CN114532265A (en) * | 2022-02-22 | 2022-05-27 | 江苏虹州农业发展有限公司 | Efficient comprehensive breeding and separating method for rice and shrimp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102301982B (en) | Method for propagating Aphidius gifuensis by pea aphids | |
| CN106718451A (en) | The cultural method that a kind of paddy rice makees altogether with cray | |
| CN102349460B (en) | Method capable of improving cultivation specification of Procambarus clarkii | |
| CN105248242A (en) | Early-maturing grape cultivation method | |
| CN108464208A (en) | A kind of no-tillage comprehensive breeding method of rice fish ecology | |
| CN111789005A (en) | Comprehensive planting and breeding method for rice, rice and shrimp | |
| CN101755581A (en) | Method for three-dimensional planting and breeding of agricultural products | |
| CN105917929A (en) | Greenhouse planting method for watermelons | |
| CN105075785A (en) | Two-stage cultivation method for oil camellia container seedlings | |
| CN103947531A (en) | Manufacturing method of Taxus media water culture bonsai | |
| CN112154950A (en) | Early breeding method for crayfish seedlings in rice field | |
| CN112690184A (en) | Ecological breeding method for Ctenopharyngodon idellus and ecological breeding rice field for Ctenopharyngodon idellus | |
| CN107466754A (en) | A kind of stereo ecological breeding method that rice loach vegetables combine | |
| CN103988657A (en) | Method for cultivating eggplants and cucumbers in greenhouse in interplanting method | |
| CN109156280A (en) | A kind of efficient breeding method of pluralistic agricultural | |
| CN106358655A (en) | Method for cultivating semen euryales | |
| CN109156249A (en) | A kind of one ground of agricultural high-effiency is mostly used breeding method | |
| CN104604472A (en) | Blueberry open field production and cultivation method | |
| CN109006314A (en) | A kind of ridge sugarcane ditch spiral shell zoology breeding method | |
| CN114946723A (en) | Intensive pond culture method for procambarus clarkii | |
| CN1181729C (en) | Artificial cultivation method of paper mulberry | |
| CN1158913C (en) | Industrial quatic turf roll cultivating process | |
| CN112042485A (en) | Strawberry paddy-upland rotation seedling raising method | |
| CN112655620A (en) | Rice and shrimp breeding method | |
| CN112136625A (en) | Implementation method for shrimp, rice and vegetable crop rotation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210101 |
|
| RJ01 | Rejection of invention patent application after publication |