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Density of snapper mixed four large fish

Turtle mixed farming four large fish density: 120 pounds of four large fish per mu, 60 pounds of turtle fry.

The ponds should be dried and exposed to the sun or wind frozen in winter, and the aging ponds should be cleared of excessive substrate silt. Before stocking, water injection 0.8m-1.0m, with about 150kg / mu of quicklime to clear the pond. Then applied after the fermentation of human, animal, poultry manure and other organic fertilizer fertilizer, newly excavated pond fertilizer amount of 500kg / mu or so, aging pond fertilizer amount of 250kg / mu -350kg / mu.

Ten days after the pond was cleared, it was stocked with 30kg/mu-100kg/mu of lake snails. The fish and turtle mixed culture ponds can be stocked in the winter before the above operation, while the turtle fish and turtle mixed culture ponds in the first and middle of May each year to carry out the above operation. in the first and middle of June, in the greenhouse of young turtles out of the pond in about 1 week before the greenhouse doors and windows to open the greenhouse cooling, so that the greenhouse inside and outside of the air temperature, the water temperature gradually converge, and then young turtles out of the pond stocked in the mixed fish and turtle ponds.

Advantages of mixed turtle farming

Mixed turtle farming reduces costs by not feeding feed. Since the main species is grass carp, the feed is only grass carp feed, and the turtle is not fed feed at all. The advantage of doing so is to make the breeding cost of snappers very low, or even only the cost of seedlings. Because of the low density of snapper, basically no disease, there is no drug costs, no disease, survival rate is also very high, which is the key point to increase the benefits.

In addition, the use of winter fields planted ryegrass, for grass carp winter provides a wealth of low-cost bait, grass carp only when there is no ryegrass available to feed with feed, which saves a large amount of feed expenses. Mixing a small number of snappers in a domestic fish pond does not interfere with the normal growth of domestic fish, so the benefits generated by the snappers in the mix are pretty much a net increase in the profitability of the pond.