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A kind of cultivation method of crayfish in paddy field in mountain area

A farming method and paddy field technology, applied in fish farming, rice cultivation, climate change adaptation, etc., can solve the problems of affecting fishing efficiency, high cost of mechanical operation, thin farming layer, etc., to reduce manual operations and avoid cannibalism , the effect of improving the survival rate

Active Publication Date: 2021-10-26
GUANGXI ACADEMY OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, more than 80% of the paddy fields in Guangxi are in mountainous and hilly areas. The paddy fields have a large height difference, the land is uneven, the cost of mechanical operations is high, and the cultivation layer is thin. After the trenches are excavated, there is often water leakage at the bottom, so it is difficult to popularize.
[0004] The second is that it is difficult to catch seedlings. The basic population of crayfish in Guangxi is small, and the demand for seedlings is large. At present, the catch size of seedlings for breeding in paddy fields is mostly above 4-5g, and the fishing peak can only be reached at the end of November, when the water temperature is relatively low. Low, below 20°C, affects fishing efficiency

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  • A kind of cultivation method of crayfish in paddy field in mountain area

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Embodiment 1

[0043] In 2018, in Xiaoshan Village, Baipeng Town, Liujiang District, Liuzhou City, Guangxi, the 52-acre paddy field was divided into 3 breeding units according to the topographical planning, with 15 mu, 18 mu and 19 mu respectively. The outer ridge is raised to 50cm and 1-1.2m wide. Each culture unit selects one place with the highest terrain as the deep-water area, with areas of 1.4 mu, 1.6 mu, and 1.9 mu respectively. The field ridges in the deep-water area are increased to 50cm and 1m wide. All other original ridges have openings with a width of 50 cm, and the openings are connected with each other by a shallow ditch 30 cm deep and 50 cm wide to ensure unimpeded water flow in the breeding unit.

[0044] The deep-water fields are watered by pumping irrigation, and a 2m-long 60-mesh mesh bag and a 60-mesh filter box are installed at the water inlet to prevent miscellaneous fish. Other fields use the original rice field irrigation canals. The ridges of the outer circle and t...

Embodiment 2

[0054] In 2018, in Qiaoban Village, Datang Town, Nanning City, Guangxi, the 65-mu paddy field was divided into 4 breeding units according to the topographical planning, namely 17 mu, 18 mu, 15 mu, and 15 mu. The outer ridge is raised to 80cm in height and 1.5m in width. Each region selects one of the highest terrain as the deep-water field, with an area of ​​1.6 mu, 1.8 mu, 1.5 mu, and 1.5 mu respectively. The ridge of the deep-water field is raised to 70cm and 1 meter wide. All other original ridges have openings with a width of 50 cm, and the openings are connected with each other by a shallow ditch 30 cm deep and 50 cm wide to ensure unimpeded water flow in the breeding unit.

[0055] The water use method of the deep-water field is pumping irrigation, and the water source is the discharge from the Tunliu Reservoir. A 5m long 60-mesh mesh bag and a 60-mesh filter cage are installed at the water inlet to prevent miscellaneous fish. Other fields use the original rice field irri...

Embodiment 3

[0064] In 2019, in Maze Village, Wushan Town, Xingbin District, Laibin City, Guangxi, the 42-acre paddy field was divided into 3 breeding units according to the topographical planning, with 15 mu, 14 mu and 13 mu respectively. The outer ridge is raised to 1m in height and 2m in width. In each region, one of the highest terrains was selected as the deep-water field, with an area of ​​1.5 mu, 1.3 mu, and 1.3 mu, respectively. The ridge of the deep-water field was raised to 70cm and 1m wide. All other original ridges have openings with a width of 50 cm, and the openings are connected with each other by a shallow ditch 30 cm deep and 50 cm wide to ensure unimpeded water flow in the breeding unit.

[0065] The deep-water fields are watered by pumping irrigation, and the water source is the Roman River. A 6m-long 60-mesh mesh bag and a 60-mesh filter box are installed at the water inlet to prevent miscellaneous fish. Other fields use the original rice field irrigation canals. The ...

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Abstract

The invention belongs to the field of paddy field cultivation of crayfish, and in particular relates to a method for cultivating crayfish in paddy fields in mountainous areas. The method for cultivating crayfish in paddy fields in mountainous areas provided by the invention includes paddy field engineering construction, rice cultivation, management of deep water areas, seedling breeding, seedling winter breeding and shrimp production. The present invention selects the land with the highest terrain to set up a deep-water area, and utilizes the high terrain of the deep-water area to directly put the seedlings bred inside into the entire culture unit through drainage, without the need to catch seedlings, seedlings emerge early, and reduce manual operations. It also avoids cannibalism of seedlings and improves the survival rate; the invention does not excavate surrounding ditches, does not cause water leakage, does not conflict with rice planting, and has little damage to the original ridges of rice fields.

Description

technical field [0001] The invention belongs to the field of paddy field cultivation of crayfish, and in particular relates to a method for cultivating crayfish in paddy fields in mountainous areas. Background technique [0002] At present, the main production areas of crayfish are all the central provinces, and the market time is mainly concentrated from April to September each year. The northern half of Guangxi has a mid-subtropical climate, and the southern half has a south subtropical climate, with abundant rainfall and sunshine. Rain and heat are in the same season. , The short wintering period of crayfish can just make up for the shortcoming of too concentrated crayfish on the market, fill the gap in the supply of crayfish in the South China market and the scarcity of winter and spring seasonal market supply in the north. Judging from the current breeding results, the market time of Guangxi crayfish can be more than 2 months earlier than that of Hubei and other provinc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/59A01G22/22
CPCA01K61/59A01G22/22Y02A40/81
Inventor 王大鹏曾华忠陆专灵唐章生马华威
Owner GUANGXI ACADEMY OF FISHERY SCI