Method for ecologically culturing young crayfish in rice field

A technology for paddy fields and lobsters, applied in rice cultivation, climate change adaptation, animal feed, etc., can solve problems such as unsatisfactory production, and achieve the effect of large-scale and batch production

Pending Publication Date: 2020-03-17
ZHEJIANG UNIV
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The predecessors have reported that the industrialized breeding of crayfi

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  • Method for ecologically culturing young crayfish in rice field

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Embodiment 1

[0070] Select 6 flat rectangular paddy fields with good ecological environment and no pollution sources in Quanjiao area, Anhui Province, with an aspect ratio of 2:1, and each paddy field is about 15 mu;

[0071] (1) The combination of "U"-shaped ditch + "non"-shaped ditch in the seedling paddy field

[0072] Paddy field structure reconstruction, combining 1 "U"-shaped ditch and 2 "non-"-shaped ditch in each paddy field, digging "U"-shaped ditch into the paddy field along the inner side of the paddy field ridge 2 meters, the ditch width is 2 meters, and the ditch depth is 100 meters centimeters, the water level is relatively deep, and crayfish are concentrated here during the rice drying period; within the field range in the "U" shaped ditch, a "non" shaped ditch is excavated (the design and excavation will not affect the mechanized transplanting and harvesting of rice), and the ditch The depth is 30 cm, and the ditch width is 20 cm. It does not affect the density of rice plan...

Embodiment 2

[0089] Select 6 flat rectangular paddy fields with good ecological environment and no pollution source in Huoqiu area, the aspect ratio is 2:1, and each paddy field is about 10 mu;

[0090] (1) The combination of "U"-shaped ditch + "non"-shaped ditch in the seedling paddy field

[0091] The structure of the paddy field is reconstructed, combining 1 "U"-shaped ditch and 2 "non-"-shaped ditch in each paddy field to increase the places where broodstock shrimp inhabit, dig holes and lay eggs: excavate a "U" shape into the paddy field along the inner 2 meters of the paddy field ridge The ditch is 2.5 meters wide, 110 cm deep, and the water level is relatively deep. During the rice drying period, crayfish are concentrated here; in the field range of the "U" shaped ditch, the "non" shaped ditch is excavated (design and excavation Does not affect mechanized rice transplanting and harvesting), the ditch depth is 35 cm, the ditch width is 25 cm, does not affect the density of rice plant...

Embodiment 3

[0108] Six flat rectangular paddy fields with good ecological environment and no pollution sources were selected in Dingyuan area, with an aspect ratio of 2:1, and each paddy field was about 18 mu.

[0109] (1) The combination of "U"-shaped ditch + "non"-shaped ditch in the seedling paddy field

[0110] The structure of the paddy field is reconstructed, combining 1 "U"-shaped ditch and 2 "non-"-shaped ditch in each paddy field to increase the place where broodstock shrimps inhabit and dig holes to hold eggs: it is better to carry out rice and shrimp co-production around the paddy field, along the 2 meters inside the paddy field ridge. A "U"-shaped ditch is excavated in the paddy field. The ditch is 3 meters wide and 120 cm deep. The water level is relatively deep. Crayfish gather here during the rice drying period; ""-shaped ditch (design and excavation will not affect mechanized rice transplanting and harvesting), the ditch depth is 40 cm, and the ditch width is 30 cm, which ...

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Abstract

The invention provides a method for ecologically culturing young crayfish in a rice field. The method includes the steps of firstly, ditching the rice field to form a grid ditch; secondly, screening out robust parent crayfish, and placing the selected parent crayfish into the rice field; thirdly, feeding the parent crayfish with feed capable of promoting gonad development; fourthly, dynamically regulating and controlling the water level of the rice field to induce the parent crayfish to dig holes, mate, lay eggs and hatch in the ditch; fifthly, during the harvesting of rice planted in the ricefield, controlling the height of left rice stubbles, and controlling water level to be lower than the height of the rice stubbles after water is filled into the rice field; sixthly, using natural bait and artificial feed in a combined manner to feed the hatched young crayfish in the rice field; seventhly, catching the young crayfish. By the method, ecological crayfish culturing can be performed in contiguous rice fields in a flat area, and large-scale batch production of young crayfish can be achieved.

Description

technical field [0001] The invention relates to a method for raising crayfish seedlings, in particular to a method for ecologically raising crayfish seedlings in paddy fields in plain areas, and belongs to the technical field of crayfish seedling breeding. Background technique [0002] Procambarus clarkii belongs to the genus Procambarus clarkii belonging to the phylum Arthropoda, Crustacea Crawfishidae. Its scientific name is "Procambarus clarkii", also known as "crayfish" (hereinafter collectively referred to as "crayfish"). It is loved by people and is the main species of shrimp farming at present. In recent years, due to the sharp increase in market demand, the natural resources of crayfish have decreased sharply, and the price has gradually increased. Therefore, artificial scientific breeding is used to meet market demand. Crayfish paddy farming has developed rapidly, and seedlings have become a bottleneck for the further development of crayfish farming. Due to the bi...

Claims

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Application Information

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IPC IPC(8): A01K61/59A23K10/20A23K10/24A23K10/26A23K10/30A23K10/18A23K20/147A23K50/80A01G22/22
CPCA23K10/18A23K10/20A23K10/24A23K10/26A23K10/30A23K20/147A23K50/80A01K61/59A01G22/22Y02A40/81Y02A40/818
Inventor 唐建军奚业文陈欣
Owner ZHEJIANG UNIV
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