Ecological composite breeding system with cooperation of fishing and rice

Abstract

The invention discloses an ecological composite breeding system with cooperation of fishing and rice. A fish pond is positioned in one side of a rice field; a first water channel is formed from the fish pond to the rice field; and a second water channel is formed from the rice field to the fish pond. The system is characterized in that the configuration ratio of the area of the fish pond to the area of the rice field is 20:1 to 35:1. Small ridges are constructed in the rice field, and the small ridges form an "S"-shaped water flow routes from a water inlet end to a water outlet end in the ricefield. When the water level of the fish pond is lower than that of the rice field, a water pump is arranged in the first water channel, and a first gate is arranged in the second water channel; and when the water level of the fish pond is higher than that of the rice field, the first gate is arranged in the first water channel, and the water pump is arranged in the second water channel. By adopting the scheme, the function that nitrogen, phosphorus and other eutrophy substances are effectively absorbed in the growth process of the rice field is sufficiently taken into play, pollutants such astotal nitrogen, total phosphorus, ammoniacal nitrogen, nitrate nitrogen and CODs (chemical oxygen demands) which are discharged into the environment can be also effectively reduced, and meanwhile, anormal yield of rice can be achieved under a condition that fertilization is reduced.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of agro-ecological aquaculture, and specifically an ecological compound cultivation system for fish and rice interaction in which an aquaculture system and a rice system are mutually beneficial and coupled. Background technique [0002] The rapid development of freshwater pond aquaculture in our country has become increasingly important in freshwater aquaculture. According to statistics, in 2010, the aquaculture area of ​​freshwater ponds in my country reached 2.377 million hm 2 , accounting for 43% of the freshwater aquaculture area, and the output of pond aquaculture aquatic products reached 16.47 million tons, accounting for 70% of the total freshwater aquaculture output. In order to increase the production of aquatic products, high-density intensive aquaculture is generally adopted in my country's freshwater aquaculture at present, and there are outstanding problems such as ...

AI Technical Summary

Problems solved by technology

[0006] The invention provides an ecological compound cultivation system of fish-rice interaction, and its purpose is to solve the problems of the existing complex cultivation system of fish-rice interaction and high cost of use and maintenance

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