Rice fish culture system and micro flood and drought rotation irrigation method based on same

Abstract

The invention discloses a rice fish culture system and a micro flood and drought rotation irrigation method based on the same. The rice fish culture system comprises a rice field and a preprocessing pool, a wide ditch for fish culture is excavated between a ridge and the first side of the rice field, the surface of the rice field is heightened along with increase of the distance between the rice field and the wide ditch, a non-pluggable movable submersible sewage pump is arranged in the wide ditch, the preprocessing pool comprises a pool body, a clean water irrigation pump and an excrement liquid irrigation pump, the pool body is internally provided with a partition plate for partitioning the pool body into a clean water region and a fermentation region, the clean water region is providedwith a filter plate, a water outlet of the non-pluggable movable submersible sewage pump stretches into the upper side of the clean water region through a water pumping pipe, a water inlet of the clean water irrigation pump is located at the lower side of the clean water region, a water inlet of the excrement liquid irrigation pump is located at the fermentation region, and water outlets of the clean water irrigation pump and the excrement liquid irrigation pump are located inside the rice field. More fish excrement can be absorbed by rice, the fish culture water quality is improved, and the rice and fish yield is increased.

Description

technical field [0001] The invention relates to the technical field of paddy-fish farming, in particular to a rice-fish farming system and a micro-water dry rotation irrigation method based on the system. Background technique [0002] At present, fish farming in rice fields mainly adopts the mode of excavating ring ditches around the paddy fields, planting rice on the surface of the fields, and raising fish in the ring ditch. This method has the effect of one field for two purposes, and fish are harvested while producing rice. However, this method has three disadvantages: first, fish excrement is mainly accumulated at the bottom of the ring ditch, which may easily cause local water quality deterioration; second, the exchange of water in the rice field is not smooth, and the absorption effect of rice on fish excrement is not good; The third is that the fish raised in the ring ditch are difficult to manage and catch. [0003] In addition, long-term irrigation of paddy fields ...

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Problems solved by technology

However, this method has three disadvantages: first, fish excrement is mainly accumulated at the bottom of the ring ditch, which may easily cause local water quality deterioration; second, the exchange of water in the rice field is not smooth, and the absorption effect of rice on fish excrement is not good; The third is that the fish kept in the ring ditch are not easy to manage and catch

[0003] In addition, long-term irrigation of paddy fields or insufficient soil moisture are not conducive to the growth of rice, especially the root system of seedlings; when paddy fields are flooded for a long time, the water surface area is large and the water evaporation is large, which is not conducive to water conservation.

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