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Comprehensive and ecological river crab pond culturing method

A technology of ecological breeding and ponds, applied in fish farming, application, climate change adaptation, etc., can solve the problems of reduced nutritional value and low economic benefits, and achieve the goal of increasing utilization rate, improving economic benefits, and increasing the ratio of output to input Effect

Inactive Publication Date: 2013-12-11
JIANGSU AGRI ANIMAL HUSBANDRY VOCATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of polyculture method of river crab, mandarin fish, freshwater shrimp and Chinese mullet, to solve the problem that the existing method of polyculture of river crab with mullet uses more antibiotics to prevent and control diseases and cause its nutritional value to decrease and this polyculture method The problem of lower economic benefits

Method used

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specific Embodiment approach 1

[0009] Specific Embodiment 1: The method of this embodiment includes the following steps: Step 1. Conditions of the river crab pond: the shape of the river crab pond is "back", the slope ratio is 1:3 to 1:4, the middle of the pond is convex, the surrounding is concave, and the bottom is Lay microporous aeration pipes, and the recessed deep ditch area accounts for 35-45% of the pond; Step 2, river crab pond preparation: After the river crab pond has been cleared, disinfected, fertilized, planted grass, and snails are cast, the river crab pond is sunken with nets The deep ditch area separates a temporary breeding area, which accounts for 20% to 30% of the total area of ​​the pond, and the rest of the water is used to cultivate aquatic plants in the early stage;

[0010] The method also includes the following steps: step 3, Chinese mullet domestication: oxygenate the domestication pond, keep the dissolved oxygen in the domestication pond above 5mg / L, put the Chinese mullet species...

specific Embodiment approach 2

[0012] Specific embodiment two: this embodiment feeds river crab feed in river crab ponds during the breeding period, wherein the weight ratio of animal bait and vegetable bait fed during 3-6 months is 60:40, and the daily feeding amount is 5% of the total weight of crabs, the feeding amount accounts for 25%-30% of the annual feeding amount; the weight ratio of animal bait to plant bait fed during the period from late June to mid-September is 45:55, The daily feeding amount is 3%-4% of the total crab weight, and the total feeding amount accounts for 20%-25% of the annual feeding amount; starting from mid-September, the weight ratio of animal bait to plant bait is 65%. : 35, the daily feeding amount is 5%-8% of the total crab weight, and the total feeding amount accounts for 45%-50% of the annual feeding amount. The ratio of the daily feeding amount in the morning to the daily feeding amount in the evening is 3:7 The advantage of this step is to make full use of the biological ...

specific Embodiment approach 3

[0013] Specific embodiment three: this embodiment carries out water quality regulation and control to river crab pond during breeding period: when crab kind puts in a suitable place to breed begins, pond water level remains on 0.4-0.5m, and water level remains on 0.6-0.8m during April-May, and summer water level maintains At 1.3-1.5 meters, during June-September, change the water in the river crab pond every 7-10 days; change the water every two weeks in spring and autumn, and the depth of each water change is 20cm-30cm, drain first and then irrigate. Oxygenation in the micropores every night, timely oxygenation in special weather, once a month substrate improvement drugs, among which the substrate improvement drugs are calcium peroxide and / or zeolite, and bioactive agents are administered every half a month to a month to adjust Water quality, wherein the bioactive agent is photosynthetic bacteria, EM bacteria solution and / or complex bacillus. The advantage of this step is that...

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Abstract

The invention relates to the field of aquaculture, in particular to a comprehensive and ecological river crab pond culturing method. The method solves the problems that in an existing river crab and Chinese high fin banded shark mixed culturing method, antibiotics are usually used for carrying out prevention and treatment of diseases so as to cause reduction of nutritional value of river crabs, and the mixed culturing method brings lower economic benefits. The method comprises the following steps of step 1 of carrying out preparation of river crab pond conditions, step 2 of carrying out river crab pond preparation, step 3 of carrying out domestication of Chinese high fin banded shark, step 4 of stocking river crab larvae, fingerlings of Chinese high fin banded shark, fingerlings of mandarin fish and freshwater shrimps, and step 5 of uniformly putting fresh and clean margarya into a whole river crab pond according to the use quantity of 150kg to 200kg per mu before the Tomb-Sweeping Day and monthly putting temporarily cultured fresh margarya into the river crab pond according to the use quantity of 60kg per mu during May to August. The comprehensive and ecological river crab pond culturing method is used for culturing the river crabs.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a comprehensive ecological breeding method for river crabs in ponds. Background technique [0002] River crab, also known as crab, scientific name of Chinese velvet crab; mandarin fish, also known as seasonal flower fish, sweet-scented osmanthus fish, which refers to the species of mandarin fish with cocked mouth; freshwater shrimp, scientific name of Japanese river prawn; Chinese mullet, a unique species in my country, the second-class national protection wild aquatic life. River crabs, mandarin fish and freshwater shrimps are all rare and high-grade aquatic products, and the cultivation of river crabs, mandarin fish and freshwater shrimps has also been carried out. With the continuous expansion of their breeding scale and the continuous increase of their breeding output, it is difficult to further improve their breeding benefits . As a unique species of the Yangtze River system in m...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 陈小江王权赵旭庭王健叶建生
Owner JIANGSU AGRI ANIMAL HUSBANDRY VOCATIONAL COLLEGE
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