Method for cultivating cray in rice field in southern region

A technology in southern regions and rice fields, applied in the field of aquaculture, can solve problems such as crayfish that have never been reported, and achieve the effects of increasing the quality and output of farming, inhibiting the occurrence of pathogenic bacteria, and increasing output value

Pending Publication Date: 2019-04-05
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] 1. Experimental location

[0028] A farmer in Linzhai Town, Heping County, Heyuan City, with an area of ​​100 mu. In the first half of 2017, rice fields were used to breed crayfish. The seedlings were Hubei Qianjiang crayfish seedlings, and the shrimp seedlings began to be released in late April.

[0029] 2. Stocking and harvesting

[0030] Rice field selection and transformation → escape prevention facility construction → clear pond → aquatic plant planting → crayfish stocking → feeding management → fishing and marketing.

[0031] 1) Paddy field selection and digging ring ditch, soaking field

[0032] Paddy field requirements: sufficient water source, fresh water quality, sufficient dissolved oxygen, no pollution, and convenient drainage. Clayy loam soil is preferred, widen and heighten the ridge, dig a 3-meter-long ditch along the perimeter of the ridge, with a depth of 1.2 meters, a width of 3 meters, and a slope ratio of 1:2. The paddy field a...

Example Embodiment

[0051] Example 2

[0052] 1. Experimental location

[0053] The pond breeding area in Longchuan County, Heyuan City is 60 mu, with a total of 3 ponds. Pond conditions: Excavation is based on the basic shape of the farmland, and the area of ​​each pond varies slightly.

[0054] 2. Stocking and harvesting

[0055] 1) Digging ring ditches, soaking fields

[0056] Paddy field requirements: sufficient water source, fresh water quality, sufficient dissolved oxygen, no pollution, and convenient drainage. Clay loam soil is preferred, the ridges are widened and heightened, and ring ditches are dug around the ridges, with a depth of 1.2 meters, a width of 5 meters, and a slope ratio of 1:3. The paddy field area is 15 mu, rectangular and east-west. Install a 60-mesh silk screen at the inlet and outlet to prevent wild fish and fish eggs from entering the pool with the water flow. Crayfish have a strong ability to escape, and anti-escape facilities must be prepared. Usually, anti-esc...

Example Embodiment

[0073] Example 3

[0074] 1. Experimental location

[0075] There are 3 ponds with a breeding area of ​​80 mu. Pond conditions: Excavation is based on the basic shape of the farmland, and the area of ​​each pond varies slightly.

[0076] 2. Stocking and harvesting

[0077] 1) Paddy field selection and digging ring ditch, soaking field

[0078] Paddy field requirements: sufficient water source, fresh water quality, sufficient dissolved oxygen, no pollution, and convenient drainage. Clay loam is better, the ridge is widened and heightened, and a ring ditch is dug around the ridge, with a depth of 1.5 meters and a width of 4 meters. The area of ​​the paddy field is 20 mu, rectangular and east-west. An 80-mesh silk screen is installed at the inlet and outlet to prevent wild fish and fish eggs from entering the pool with the water flow. Crayfish have a strong ability to escape, and anti-escape facilities must be prepared. Usually, anti-escape facilities are erected along the ...

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Abstract

The invention discloses a method for cultivating cray in a rice field in the southern region. The method comprises the steps that a rice field is selected, a ditch is deepened, rice is planted and cultivated, cray is stocked, and houttuynia cordata is planted in the ditch by adopting the soilless culture technology; the temperature of the water surface can be lowered, the summer survival rate of the cray is increased, and the survival rate is 60-65%; the cray growth rate can be increased by 5-12%, the disease occurrence rate is lowered by 8-10%, the cray culture quality and yield are increased; meanwhile, due to the sterilizing effect of houttuynia cordata, diseases can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for cultivating crayfish in paddy fields in southern regions. Background technique [0002] The scientific name of crayfish is Procambarus clarkia (Procambarus clarkia), commonly known as freshwater crayfish, which is a species of freshwater crayfish. Suborder, crayfish family. Crayfish are native to the southern United States and northern Mexico. From the 1980s to the early 1990s, more than a dozen provinces and cities across the country successively used them as breeding objects. In some places, crayfish even became the dominant population in some lakes and ditches. [0003] In recent years, crayfish has become very popular in the international and domestic markets, and the price has been rising continuously. The supply of sales is in short supply, and the economic benefits of breeding are very obvious; crayfish is also one of the main aquatic species in many pr...

Claims

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Application Information

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IPC IPC(8): A01G22/22A01G31/00A01G33/00A01K61/59
CPCA01G22/22A01G31/00A01G33/00A01K61/59Y02A40/81Y02P60/21Y02P60/60
Inventor 王广军张凯李志斐郁二蒙余德光谢骏田晶晶张军旺孙悦
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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