CN102037910A

CN102037910A - Technology for culturing Hongze Lake hairy crab

Info

Publication number: CN102037910A
Application number: CN2009102329050A
Authority: CN
Inventors: 付秀兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-09
Filing date: 2009-10-09
Publication date: 2011-05-04

Abstract

The invention relates to a technology for culturing Hongze Lake hairy crabs, which scientifically implements the choice of an adult crab cultured pond, suitably-planted waterweeds in the crab pond, suitably-fed snails in the crab pond, reasonable stocking of the crab pond, scientific and reasonable bait feeding, the water quality control of the crab pond and crab fishing.

Description

The Hongze lake steamed crab cultural technique

Technical field

The present invention relates to the crab cultivation technology, be specifically related to a kind of Hongze lake steamed crab cultural technique.

Background technology

Hongze lake steamed crab is one of Chinese ten your name crabs, has abundant nutritive value.Crab is just in vogue before more than 200 year Christian era, and the popular name is " beetle ".Original people dare not eat crab, when Henkel master Liu nation leads army to fight, because army provisions are in short supply, soldier's flesh is starved unbearably, Liu nation sees everywhere it being " beetle ", just " beetle " is baked with fire and has eaten, and next day is reaction not, just call officers and men to eat " beetle "-be exactly world-famous crab today, played victorious battle therefrom.From then on people have had the custom of edible crab.By Chinese and the overseas universally recognized cuisines of people, the crab of natural breeding has not been satisfied people's eating requirements far away to crab at present, though rely on the breed of small size to replenish the needs in market in recent years, does not equally alleviate the demand in market yet.Along with the raising of people to the crab nutritive value, very favoring crab is cuisines.And " Chinese ten your name crabs " market is very in short supply.

Summary of the invention

The objective of the invention is to: a kind of Hongchehu Lake crab cultivation technology is provided, utilizes crab cultivation technology of the present invention to culture crab, output height, the good meat aquatic foods of quality have many benefits to health.

The technical scheme that technical solution problem of the present invention is adopted is: scientifically implemented should throw in the pasture and water that should plant in the selection, crab pond of crab cultivating pool, the crab pond that screw, crab pond are rationally put in a suitable place to breed, the fishing for of the control of scientific and reasonable bait throwing in material, crab pond water quality, crab.

Beneficial effect of the present invention is: the crab body is big, Fresh ﹠ Tender in Texture, be of high nutritive value, high yield, good in economic efficiency.

Embodiment

1. become the condition of crab cultivating pool

Have a good transport service the environment peace and quiet; The water source is abundant, and water quality is well pollution-free, and irrigation and drainage are convenient;

Smooth at the bottom of the pond, Chi Gengpo is than 1: 2.5-3.Prevent escaping facility: mainly contain cement brick wall, calcium-plastic board fence, three kinds of forms of polythene net sheet fence.Generally adopt the calcium plastic enclosure at present, calcium-plastic board is imbedded 20 centimetres of compactings in the soil all around along the ridge, fix with timber for 1 meter at interval.Sterilizing is cleaned up the pond: remove too much mud, only stay about 10 centimetres in mud, use the quicklime full pool spilling head, every mu of consumption 200--250 kilogram, reach the sterilization of cleaning up the pond completely, removal of impurities removes wild, and killing pathogenic bacteria is improved substrate, behind the medicine 7 days, promptly cross water 1 time, add water to get rid of dirt, to shine then after pool 3--5 days.

2. the pasture and water that should plant in the crab pond

Culture a pool crab, at first will plant a pool grass, pasture and water are that river crab is liked one of natural bait of eating, can play the good effect that purifies water again, and are the places that river crab perched, hid harmful animal.The area of planting pasture and water should account for more than 70% of pond area, and principal item has hydrilla verticillata, eel grass, waterweed etc., and hydrilla verticillata, waterweed are based on transplanting, cuttage, and eel grass is planted with seeding method.

3. should throw in screw in the crab pond

Screw is one of natural bait of river crab happiness food, can purify water again.Before the crab kind is put in a suitable place to breed and market and and, throw in fresh and alive screw 300--500 kilogram for every mu, to cultivate the foundation bait of river crab.The selection of crab kind: select the Changjiang river water system Eriocheir sinensia crab kind of neat specification, complete, the anosis nothing wound of appendage, Quick off the mark to be advisable.

4. rationally put in a suitable place to breed in the crab pond

General crab kind is put in a suitable place to breed and will be accomplished " three is suitable " " one supports temporarily ", and promptly suitable density is put in a suitable place to breed in good time, and moderate specification is put in a suitable place to breed after supporting temporarily with elder generation.Crab kind breeding density, general every mu is about 500--600, make river crab that life, the growing space of an abundance are arranged like this, the crab kind is put general being advisable to March by the end of February in every year of time in a suitable place to breed, plant too early if put, the injures and deaths of then surviving the winter are heavier, cross slow water temperature and rise, partly river crab shell will influence pool survival rate down.Crab kind stocking size only is advisable with per kilogram 100--200, and specification is excessive, and per shell first time difficulty is damaged heavier; Specification is too small, and the radix of then growing is little, influence listing specification.The crab kind " is supported " temporarily, is necessary transition stage before the crab kind is put in a suitable place to breed, needs to be provided with in the pond earlier one " supporting the district temporarily ", and it supports time length temporarily, should decide on pasture and water growing state in water temperature and the pond, and supporting area temporarily is to put about 1/5 of area in a suitable place to breed.

5. scientific and reasonable bait throwing in material

River crab is the Omnivore of partial eclipse animal bait.On bait feeding, the science bait-throwing method of strict implementation the " four decide four sees ", the principle of grasp " smart in earlier stage, middle green grass or young crops, meat and vegetables are arranged in pairs or groups ".Sooner or later respectively throw something and feed 1 time, day feeding volume generally accounts for the 3--4% of river crab body weight, and is advisable to eat up in 1--2 hour.At the initial stage of putting in a suitable place to breed, based on animal bait, principal item is new fresh and alive small fish, spiral shell freshwater mussel meat etc., progressively increase the vegetal concentrated feed amount of throwing something and feeding later on, as wheat, corn, dregs of beans etc., high temperature season, do not throw animal bait, throw the smart bait of vegetalitas less, throw green and rough feeds, more as pasture and water, pumpkin, potato etc., enter and culture the later stage, for the short fat weightening finish stage of river crab, then should increase vegetalitas concentrated feed and animal bait, guarantee that river crab has enough.

6. the control of crab pond water quality

The general depth of water remains on 0.6--0.8 rice, and high temperature season is adjusted to 1--1.2 rice.Water quality adjustment lays particular emphasis on three aspects: the one, and duty renews water, changes water one time in general 7--10 days, and water filling every day is 10--20 centimetre during high temperature, changes one time water in 3 days.The 2nd, the acid-base value of regulating water body, generally grasping at pH value is between the 7.5--8.5.The main quicklime that adopts is regulated, and 7--10 days full ponds are sprinkled and watered 1 time, and every mu every meter depth of water consumption is about the 10--15 kilogram.The 3rd, regulate water quality with photosynthetic bacteria, every mu of consumption 3--5 kilogram, full pond is sprinkled and is watered, transforming harmful substances such as ammonia in the water body, nitrogen, hydrogen sulphide, the growing and breed of control noxious bacteria.

7. crab fishes for

Generally enter October, according to temperature and market conditions, fish for listing in good time, main tool is the ground cage.

Claims

1. Hongchehu Lake crab cultivation technology is characterized in that: scientifically implemented to become should throw in the pasture and water that should plant in the selection, crab pond of crab cultivating pool, the crab pond that screw, crab pond are rationally put in a suitable place to breed, the fishing for of the control of scientific and reasonable bait throwing in material, crab pond water quality, crab.