Ecological breeding pond for shrimp and vegetable crop rotation

Abstract

The invention discloses an ecological breeding pond for shrimp and vegetable crop rotation. The ecological breeding pond comprises a settling pond, a filtering pond, a purifying pond, a breeding pondand an oxygen increasing device. A grid is installed between the settling pond and the breeding pond; a water pump is installed between the purifying pond and the breeding pond; the filtering pond isinstalled between the settling pond and the purifying pond; a high water opening is form between the settling pond and the filtering pond; a low water opening is form between the filtering pond and the purifying pond; the oxygen increasing device is located at the water outlet of the water pump; the purifying pond is provided with an external water pipe; a sludge layer with the thickness of 0.2-0.4 meters is installed at the bottom of the breeding pond; the pond bank slope ratio of the breeding pond is 1:2.5. On one hand, the characteristic of strong fertilizer absorption ability of vegetablesof broccoli, potherb mustard, brassica juncea var.tumida and the like is used to hardening sludge and to reduce organic materials in the pond, and on the other hand, residue leaves after growing period of the vegetables are used to provide an excellent condition for the growth of South America white shrimps; meanwhile, the vegetables of the broccoli, the potherb mustard, the brassica juncea var.tumida and the like greatly improve output effect of the pond. Not only is the land utilization efficiency improved, but also the output effect of unit area farmland is greatly improved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a novel shrimp-vegetable rotation ecological breeding pond. Background technique [0002] With the expansion of market demand for aquatic products, aquaculture has achieved rapid development by catering to people's growing demand for aquatic products with its huge development potential. The vigorous development of aquaculture and the continuous expansion of aquaculture scale; With the rapid development, the aquaculture area is gradually expanding, leading to a series of environmental problems, such as the decline in the utilization rate of land resources brought about by the continuous development of new aquaculture ponds for freshwater aquaculture, and the high nitrogen and phosphorus content in the bottom mud of shrimp ponds often makes the The impact on the water quality of shrimp ponds has become a matter of great concern to the country and the industry. Excessive pond...

AI Technical Summary

Problems solved by technology

The input of artificial feed causes serious environmental pollution caused by intensive farming. In terms of freshwater aquaculture, the feces produced by raising 1 ton of freshwater fish is equivalent to the amount of feces produced by 20 pigs. In terms of mariculture, each ton of shrimp needs to be cast Feed is 3 to 5 tons, which is equivalent to 1 ton to 1.3 tons of protein, but the utilization rate is only about 20%. A large amount of nitrogen flows into the water body, causing secondary pollution of the breeding waters

At the same time, due to the large amount of wastewater involved in this feeding method, water treatment and pollution control are more difficult

In addition, as inland water bodies and coastal waters are affected by industrial, civil and agricultural pollution, the water quality deteriorates, affecting its applicability for aquaculture, resulting in a further reduction in available water sources

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