Self-cultivation seedlings are selected from the large-scale pure Yangtze River water system for the development of new crab breeding crabs. Opening up special ponds to cultivate their own crab species can reduce the cost of raising crabs and increase the survival rate of crab species.
In the first two years, crabs were cultivated in the first year and crabs in the second year were used to make crabs more than 150 grams in size, which can increase the market competitiveness of commercial crabs.
The low-density cultivation of 200 to 500 sticks of crabs per mu will be required to cultivate large-size crabs at the end of the year.
Grass crabs require crabs to cover more than 30% of water plants. Aquatic species can use water hyacinth, wormwood and other emerged plants, or submerged plants such as Elodea, Vallisneria, rotundus and blackgrass, or floating plants such as duckweed. The shore can also be grown with vegetables and water peanuts.
The crab pool throws a certain amount of fresh snails, razor clams, river clams, etc. into the crab pond, which can not only purify the water but also provide the crab with abundant fresh feed.
Science feeds young juveniles, mainly animal feeds, supplemented by plant feeds. During crab breeding, plant-based feeds are mainly used as animal feed supplements. In the later period, it was fed with high quality animal feed for about one month.
Comprehensive prevention and control of disease to strengthen water quality management, regular water body disinfection, every half a month with limed water Quanchiposa once. Try to use as little or no medication as possible and do not use drugs that have side effects on crabs.
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