CN104221977A - Integral farming method for river crab pond and grass carp pond - Google Patents

Abstract

The invention discloses an integral farming method for a river crab pond and a grass carp pond. The integral farming method is achieved through the following steps of (1) preparation of a culture pond, (2) putting in of fish fries and crab seeds and (3) cultivation management. According to the step (1), the pond with the area being 20 mu is chosen, the pond is divided into two parts by a blocking net, one part of the pond occupies 1/4 of the pond in area, the water depth is 2 m, and the part of the pond is used as a grass carp culture area; the other part of the pond is 3/4 of the pond in area and is used as a river crab culture area, the blocking net is made of a polyethylene net piece, the blocking net is supported by pile frames every five meters, and the head line of the blocking net is 0.8 meter higher than a water surface. According to the step (2), the stocking number of grass carps in the grass carp culture area is 800/mu, and the specification of the grass carps is 50 grams per grass carp; the stocking number of river crabs in the river crab culture area is 800/mu, and the specification of the river crabs is 80 river crabs per jin. According to the step (3), in the breeding season from May to September, the cultivation management mode in the grass carp culture area is the same as the cultivation mode of a grass carp pond.

Description

A kind of river crab pond and grass carp pond integration cultural method

Technical field

The present invention relates to a kind of cultural method, particularly a kind of river crab pond and grass carp pond integration cultural method, belong to cultural technique field.

Background technology

Grass carp generally like perch in the waters such as rivers, lake, lower floor and offshore many pasture and water region.The habit of tool You He lake migration, sexually matured individuality is laid eggs in the flowing water such as rivers, reservoir, parent population after laying eggs and juvenile fish enter in tributary and lake, Tongjiang, usually ingest fatten at the meadow, shoal do not had by water logging and flashing region and the attached water body of Heavenly Stems and Earthly Branches stream (pasture and water such as lake, river, gat grow thickly area).Winter then survives the winter at the deep water place in master stream or lake.Grass carp disposition is active, and swimming rapidly, often hunts in packs, and property is voracious, is typical herbivorous fishes.Its fry stage ingests zooplankton, and young stage is held concurrently food insect, earthworm, algae and duckweed etc., and when body is about and reaches more than 10 centimetres, Aquatic Higher Plants of ingesting completely is wherein many with gramineous plants especially.The floristics of Feeding in Grass Carp changes to some extent along with the situation on food basis in living environment.

Summary of the invention

The present invention is based on existing grass carp cultural method, adopt the principles of science of novelty, propose a kind of river crab pond and grass carp pond integration cultural method, it greatly saves labour, reduce the lethality of grass carp, improve the output of grass carp, reach the object of high yield and high quality.

The technical scheme that the present invention solves the employing of its technical problem is: a kind of river crab pond and grass carp pond integration cultural method, its cultural method adopts following steps to realize.

(1) culturing pool prepares: selection area is the pond of 20 mu, pond block is divided into two parts, a part accounts for 1/4 of pond area, the depth of water 2 meters, be grass carp culturing area, another part is 3/4 of pond area, for culture of Chinese mitten crab region, block adopts polyethylene mesh sheet, blocks to support with pile frame every 5 meters, block exaggerated higher than above the water surface 0.8 meter;

(2) throw in fry and juvenile crab: the grass carp stocking rate in grass carp culturing area is 800 tails/mu, and specification is 50 grams/fish, culture of Chinese mitten crab region, button crab stocking rate 800/mu, specification is 80/jin;

(3) aquaculture management: cultivation the busy season May-September, the pasture and water of culture of Chinese mitten crab region floating on water are pulled out and is transferred to grass carp culturing area in time, if pull out not in time, then because pasture and water hide the pond water surface, cause water body printing opacity at the bottom of pond poor, dissolved oxygen is low, the pasture and water of pond floating on water very easily rot and pond water quality are worsened, cause river crab anoxic, cause disease, impact grows even mortality, culturing area was thrown in beneficial bacterium preparation every 7 days-15 days and utilizes the measures such as the end oxygen increasing equipment oxygenation every day, reduce cultivate water nitrite, ammonia nitrogen, hydrogen sulphide isoconcentration, suppress harmful microorganism Growth and Reproduction in water body, purify water, dissolved oxygen content in the water body of culture of Chinese mitten crab region is kept to be not less than 5mg/l, grass carp culturing area aquaculture management is with grass carp pond culture pattern.

Beneficial effect of the present invention: a kind of river crab pond that the present invention proposes and grass carp pond integration cultural method, it greatly saves labour, reduces the lethality of grass carp, improves the output of grass carp, reaches the object of high yield and high quality, has larger promotional value.

Embodiment

Below in conjunction with instantiation, the invention will be further described.

A kind of river crab pond and grass carp pond integration cultural method, its cultural method adopts following steps to realize.

(1) culturing pool prepares: selection area is the pond of 20 mu, pond block is divided into two parts, a part accounts for 1/4 of pond area, the depth of water 2 meters, be grass carp culturing area, another part is 3/4 of pond area, for culture of Chinese mitten crab region, block adopts polyethylene mesh sheet, blocks to support with pile frame every 5 meters, block exaggerated higher than above the water surface 0.8 meter;

(2) throw in fry and juvenile crab: the grass carp stocking rate in grass carp culturing area is 800 tails/mu, and specification is 50 grams/fish, culture of Chinese mitten crab region, button crab stocking rate 800/mu, specification is 80/jin;

(3) aquaculture management: cultivation the busy season May-September, the pasture and water of culture of Chinese mitten crab region floating on water are pulled out and is transferred to grass carp culturing area in time, if pull out not in time, then because pasture and water hide the pond water surface, cause water body printing opacity at the bottom of pond poor, dissolved oxygen is low, the pasture and water of pond floating on water very easily rot and pond water quality are worsened, cause river crab anoxic, cause disease, impact grows even mortality, culturing area was thrown in beneficial bacterium preparation every 7 days-15 days and utilizes the measures such as the end oxygen increasing equipment oxygenation every day, reduce cultivate water nitrite, ammonia nitrogen, hydrogen sulphide isoconcentration, suppress harmful microorganism Growth and Reproduction in water body, purify water, dissolved oxygen content in the water body of culture of Chinese mitten crab region is kept to be not less than 5mg/l, grass carp culturing area aquaculture management is with grass carp pond culture pattern.

Claims (1)

1. river crab pond and a grass carp pond integration cultural method, is characterized in that: described cultural method adopts following steps to realize:

(1) culturing pool prepares: selection area is the pond of 20 mu, pond block is divided into two parts, a part accounts for 1/4 of pond area, the depth of water 2 meters, be grass carp culturing area, another part is 3/4 of pond area, for culture of Chinese mitten crab region, block adopts polyethylene mesh sheet, blocks to support with pile frame every 5 meters, block exaggerated higher than above the water surface 0.8 meter;

(2) throw in fry and juvenile crab: the grass carp stocking rate in grass carp culturing area is 800 tails/mu, and specification is 50 grams/fish, culture of Chinese mitten crab region, button crab stocking rate 800/mu, specification is 80/jin;

(3) aquaculture management: cultivation the busy season May-September, the pasture and water of culture of Chinese mitten crab region floating on water are pulled out and is transferred to grass carp culturing area in time, if pull out not in time, then because pasture and water hide the pond water surface, cause water body printing opacity at the bottom of pond poor, dissolved oxygen is low, the pasture and water of pond floating on water very easily rot and pond water quality are worsened, cause river crab anoxic, cause disease, impact grows even mortality, culturing area was thrown in beneficial bacterium preparation every 7 days-15 days and utilizes the measures such as the end oxygen increasing equipment oxygenation every day, reduce cultivate water nitrite, ammonia nitrogen, hydrogen sulphide isoconcentration, suppress harmful microorganism Growth and Reproduction in water body, purify water, dissolved oxygen content in the water body of culture of Chinese mitten crab region is kept to be not less than 5mg/l, grass carp culturing area aquaculture management is with grass carp pond culture pattern.