High-density aquiculture method

Abstract

The invention relates to a high-density aquiculture method. The method comprises control on water temperature of a culture pond and control on water quality of the culture pond. The control on the water temperature of the culture pond is arranging the culture pond in a factory designed with constant temperature; and the control on the water quality of the culture pond is as follows: firstly, pumping ground water for water culture and bacterial culture, determining change of the water quality at any time, and then adding the ground water to the culture pond when the water quality index reaches N-NO2<0.1mg / L, N-NH3<0.1mg / L and pH value at 7-8.5 and no H2S nor CO2 toxic gas exists. The control on the water temperature of the culture pond causes the water temperature to be constant at the most suitable temperature range for fish growth, and optimization process on the water quality of the culture pond causes the water quality to always keep the most suitable water-quality requirement for the fish growth, which realizes high-density aquiculture, the culture density reaches 113kg / m, thus greatly reducing occupancy of farmlands and coastal zones caused by the aquiculture, and the method has high economic value.

Description

【Technical field】 [0001] The invention belongs to the technical field of aquatic product cultivation, and relates to a high-density aquaculture method suitable for high-density cultivation of various aquatic products without being affected by environmental factors. 【Background technique】 [0002] Explanation of terms: Breeding density: the weight of aquatic products farmed per cubic meter of water. [0003] In the traditional aquaculture mode, due to the greater influence of environmental factors, it is difficult to guarantee the water temperature and water quality of aquaculture. In terms of water temperature, the annual temperature difference in most areas is above 30 degrees Celsius, and the suitable growth temperature zone for fish is generally within the range of 15 degrees Celsius, so fish usually choose a place with a relatively suitable temperature on the entire water body. Water layer activities, thereby reducing the breeding density. In terms of water quality, fi...

AI Technical Summary

Problems solved by technology

In terms of water quality, fish manure is decomposed by microorganisms in the pond, and the decomposition time is relatively long. The content of harmful substances such as carbon dioxide, ammonia nitrogen, and nitrite in the water will increase with the increase in the number of fish. When these substances When the concentration reaches a certain level, it will pose a threat to the health of fish; on the other hand, in the traditional breeding method, oxygen supplementation is mainly through natural air supplementation or power oxygenation, that is, using water wheel, impeller, etc. A kind of aerator increases oxygen, the efficiency is low, and generally can only meet the low-density breeding