Method of using biogas manure to raise fish in rice fields under rice-fish symbiosis mode

Abstract

The invention discloses a method for fish farming with biogas fertilizers in a rice-fish symbiosis mode in a rice field, which comprises the following steps:S1, sorting and disinfection on the rice field; S2, fertilizing basal fertilizers; S3, transplanting seedlings; S4, excavating a fish ditch; S5, spraying biogas slurry; S6, putting fish fry to the water; S7, spraying promotion fertilizers; S8, top dressing; S9, daily management:regular oxygen dissolution in water should be carried out, pH and hydrogen sulfide determination are carried out regularly, thereby ensuring the dissolved oxygen in water in the rice field is not lower than 8 mg / L, pH 6.6-7.2; S10, harvesting, wherein the rice is harvested after being mature, and the fish are caught after growing to full maturity. The method for fish farming with the biogas fertilizers in the rice-fish symbiosis mode in the rice field has the advantages that fish farming can be carried out by utilizing the biogas fertilizers in the rice field, thereby improving fertilizer efficiency of the rice, increasing the yield of the rice, increasing the production of the fish in the rice field, increasing the earnings of farmers and improving the effective utilization of the biogas fertilizers.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for raising fish in a rice field by utilizing biogas manure in a rice-fish symbiosis mode. Background technique [0002] Under the rice-fish symbiosis mode, the use of rice fields to raise fish is a comprehensive agricultural production mode with high benefits, which has been vigorously developed in various places. Fish farming on the surface of rice fields can not only obtain fish products, but also use fish to eat pests and weeds in rice fields, excrete manure, turn the soil to promote fertilizer decomposition, and create good conditions for rice growth. However, the existing rice field fish farming exists. The following questions: (1) Due to insufficient fertilizer efficiency, rice cannot achieve the goal of increasing rice production in ideal rice field fish farming; (2) Fish in rice fields often grow slowly due to insufficient food sources, and often after sever...

AI Technical Summary

Problems solved by technology

Fish farming on the surface of rice fields can not only obtain fish products, but also use fish to eat pests and weeds in rice fields, excrete manure, turn the soil to promote fertilizer decomposition, and create good conditions for rice growth. However, the existing rice field fish farming exists. The following questions: (1) Due to insufficient fertilizer efficiency, rice cannot achieve the goal of increasing rice production in ideal rice field fish farming; (2) Fish in rice fields often grow slowly due to insufficient food sources, and often after several months It takes a long time to reach the standard for sale, and the best sales opportunity is missed, causing farmers to suffer losses. In addition, pathogens are prone to exist in the water environment of the fish body. Once the fish body is infected, it is inconvenient to treat it in time.

Biogas slurry and treatment slag are collectively referred to as biogas fertilizer, which is the product of anaerobic fermentation of biomass in a biogas tank, and its effective utilization rate is very low