Purification device and purification method for rice field water quality in rice and fish cultivation

Abstract

The invention relates to the field of rice and fish cultivation, and particularly discloses a purification device and a purification method for rice field water quality in rice and fish cultivation. The purification device comprises a shell, wherein one side of the shell is slidably connected with two dovetail sliding blocks, the shell is slidably connected with an L-shaped vertical plate through the dovetail sliding blocks, the dovetail sliding blocks are fixedly connected to one side of the vertical end of the L-shaped vertical plate, a water outlet hole is formed in the vertical plate, the water outlet hole is fixedly connected to a side wall plate of the shell, a water inlet is formed in the shell and communicated with the water outlet hole, and a filter screen is fixedly connected to the end of the water inlet of the shell. According to the invention, water can be drained and purified under the condition of different water levels in the rice field, fish can be effectively caught through the device when fish eating is needed, fish and shrimps are prevented from entering the device when fish eating is not needed, and the device is very convenient to use.

Description

technical field [0001] The invention relates to a purification device, in particular to a purification device and a purification method for paddy field water quality in rice fish farming, and belongs to the field of rice fish farming. Background technique [0002] The existing rice field cultivation is divided into two methods: monoculture rice and rice fish farming. The existing rice field cultivation requires the use of chemical fertilizers and pesticides, resulting in poor ecological benefits, while fish farming in rice fields can effectively reduce the use of chemical fertilizers and pesticides. But it cannot be avoided, so it is necessary to change the water in the paddy field in time and purify the water in the paddy field. [0003] However, there are still some defects in the purification device and purification method of the rice field water quality in the existing rice fish farming. Because the fish and shrimp have the habit of flowing along the water, it is often u...

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Problems solved by technology

[0002] The existing rice field cultivation is divided into two methods: monoculture rice and rice fish farming. The existing rice field cultivation requires the use of chemical fertilizers and pesticides, resulting in poor ecological benefits, while fish farming in rice fields can effectively reduce the use of chemical fertilizers and pesticides. But it cannot be avoided, so it is necessary to change the water in the paddy field in time and purify the water in the paddy field

[0003] However, there are still some defects in the purification device and purification method of the rice field water quality in the existing rice fish farming. Because the fish and shrimp have the habit of flowing along the water, it is often unavoidable in the prior art that when the water quality is purified, the fish and shrimp enter into the water. Inside the device, when it is necessary to eat fish and shrimp in the rice field, it is very troublesome to enter the rice field to catch them. Secondly, when the water level rises or falls, it is also necessary to adjust the position of the device, which is very troublesome. We propose a rice fish farming Purification device and purification method for water quality in middle paddy fields

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