Ecological aquaculture method for crucian and crab

Abstract

The invention provides an ecological aquaculture method for crucian and crab. The method comprises the following steps that firstly, an aquaculture pond is built, wherein the aquaculture pond comprises a crab farming area and a crucian farming area which is located on the periphery of the crab farming area, and a crab anti-escape separation net is arranged between the crucian farming area and thecrab farming area; secondly, planting is conducted, wherein reeds are planted on the bottom of the crucian farming area, lemna minor and water caltrop are planted on the water surface of the crucian farming area, an ecological floating bed is arranged on the water surface of the crab farming area, and honeysuckle is planted on the ecological floating bed; thirdly, crab larvae and crucian fry are put into the pond, wherein the crab larvae are put into the crab farming area, when the crab larvae are put, the water temperature is within the range from 10 DEG C to 20 DEG C, the stocking density is400-500 river crabs per mu, and each crab larva is 65-75 g; the crucian fry are put into the crucian farming area, the stocking density of the crucian is 350-400 kg per mu, meanwhile, salmon larvae are released, and the stocking density of the salmon larvae is 10-30 kg per mu; fourthly, breeding management is conducted, wherein the crabs and the crucian are regularly fed in the morning and evening every day, the crucian is fed with fish feed, and the crabs are fed with crab feed. By means of the method, the survival rate and the yield of the crucian and crab can be improved at the same time.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to an ecological breeding method for crucian carp and crabs. Background technique [0002] In high-density aquaculture ponds, because the oxygen consumption of animals is higher than the oxygen production of microalgae photosynthesis, the phenomenon of hypoxia and floating heads often occurs, especially in the middle of the night and around sunrise. In order to ensure the normal growth of fish, an aerator is required. But for raising crabs (mitriocheir sinensis, also known as river crabs, crabs) ponds, because the stocking density is very low, the output of river crabs in high-yield ponds is only about 100kg, and a large amount of aquatic plants need to be planted in the ponds as shelters for crabs to shell. The amount of oxygen produced by photosynthesis far exceeds the oxygen consumption of crabs, resulting in the oversaturation of dissolved oxygen in the pond, es...

AI Technical Summary

Problems solved by technology

However, in the existing crab breeding process, only crabs are cultured in the breeding pond, and the organisms are single, which can easily cause water quality to deteriorate, increase the probability of crabs getting sick, and reduce the output of crabs.