In-situ purification and ecological comprehensive utilization method for freshwater aquaculture pond

Abstract

The invention relates to an in-situ purification and ecological comprehensive utilization method for a freshwater aquaculture pond. The in-situ purification and ecological comprehensive utilization method comprises the following steps that 1, dry pond solarization is performed, the pond bottom is flattened, the whole pond is cleaned, and fresh water is filled to keep soil wet after one week; 2, rice is planted, an aquaculture operation zone with the width of 6-8 meters is reserved for the surrounding of the pond and serves as a ground cage setting and feeding zone, bunch planting is conducted on rice seeds in the remaining zone of the pond, the water level can be increased with plant height of the rice after rice seedlings resume growth; 3, macrobrachium nipponense larvae are bred, and the water level of the pond is increased with rice growth; 4, timely using ground cages to catch large macrobrachium nipponense and reserve small macrobrachium nipponense, and listing and selling are performed, and harvesting is performed in a rice ear cutting mode after the rice matures; 5, grass carp stocking is performed after the rice is harvested, the grass carps are utilized to consume rice straws in the pond; 6, all grass carps and remaining macrobrachium nipponense are caught. Compared with an existing pond purifying technology, the in-situ purification and ecological comprehensive utilization method is economic and effective, conforms to environment-friendly trend and can be accepted by farmers.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for in-situ purification and ecological recycling of fish and shrimp culture ponds. Background technique [0002] In the freshwater aquaculture pond culture system, the intensive intensive culture mode of "high input, high energy consumption and high efficiency" has greatly increased the production of aquatic products and achieved high economic benefits, but left a lot of harm to the ecological environment. The extensive use of fertilizers, feeds, fishery medicines and other inputs has caused a series of problems such as water and soil pollution, increased resistance of pathogenic organisms, and fragile ecosystems; at the same time, a large amount of residual bait and aquaculture animal manure are transformed into pairs of breeding objects in specific environments. Toxic and harmful compounds such as nitrite, ammonia nitrogen and hydrogen sulfide, all of ...

AI Technical Summary

Problems solved by technology

The extensive use of fertilizers, feeds, fish medicines and other inputs has caused a series of problems such as soil and water pollution, increased resistance of pathogenic organisms, and fragile ecosystems; at the same time, a large amount of residual bait and aquaculture animal manure are transformed into pairs of breeding objects in specific environments. Toxic and harmful compounds such as nitrite, ammonia nitrogen and hydrogen sulfide, all of which directly caused the death of fish and shrimp, or reduced their immunity to cause diseases

[0003] In the pollution control of traditional freshwater aquaculture ponds: remove pollutants by physical methods such as dredging, sedimentation, and filtration, or use chemical reagents, or plant aquatic plants such as Elodea and scorpion grass, or use floating beds to plant terrestrial plants, etc. Removal by biological methods, there are problems such as increased capital and large labor input, resulting in increased investment and reduced economic benefits, and it is difficult to obtain active support from the majority of farmers

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