Submerged plant and ecological floating bed combined crab culture method

Abstract

The invention discloses a submerged plant and ecological floating bed combined crab culture method. According to the method, deep water gutters are formed in the bottom of a pond, submerged plants are planted in deep water areas, plant floating beds are laid on water surfaces of shallow water areas, the ecological floating beds and the submerged plants are distributed in a spaced manner, and photosynthesis of plants planted on the floating beds and respiration of the submerged plants are combined, so that in the long run, the method has a good effect on water transparency and culture pond in-situ ecological restoration; in addition, a water area of the pond is divided into a plurality of deep water areas and shallow water areas, which are alternately distributed, through the deep gutters, when the transparency of water is lowered due to pollution, the shallow water areas are used for providing a water-surface-close new shelling environment for crabs, thus, the survival rate of the crabs is increased, and the crab yield of a unit area is increased.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating crabs in combination with submerged plants and ecological floating beds. Background technique [0002] Artificial breeding of crabs has high requirements on the farms. At present, the ponds for breeding crabs generally require an area of ​​1-5 mu. The condition of the crab pond is sufficient water source, good water quality, easy access to and out of the water, and the water depth is generally 1-1.5 meters. . The best quality of the bottom of the crab pond is sandy loam and gravel soil, with good ventilation performance, which is conducive to the growth and reproduction of aquatic plants, benthic animals and plants, and can provide natural feed for river crabs. The thickness of the mud at the bottom of the pond generally does not exceed 5 cm. [0003] Crab Adult crabs like water bodies with clean water quality and high transparency. They are most sui...

AI Technical Summary

Problems solved by technology

However, in recent years, due to the large-scale purse-seine culture in successive years, the water bodies of many breeding bases have been polluted to varying degrees, leading to water degradation, a large reduction in submerged plants, and a decrease in water transparency, which has affected and restricted the growth and reproduction of crabs to a certain extent. Production also fell

On the other hand, during the growth process, crabs can grow into adult crabs after many times of molting, and the survival ability of crabs in the molting stage will be reduced to the lowest level, and the mortality rate is extremely high. In order to ensure the molting of crabs, crabs Farmers need to put a lot of aquatic plants into the water body, which aggravates the water pollution of Yangcheng Lake, which is even more unfavorable for the breeding of hairy crabs