Green and efficient method for culturing shrimps and crabs and cultivating rice in rice field

Abstract

The invention discloses a green and efficient method for culturing shrimps and crabs and cultivating rice in a rice field. The method comprises the following steps that rice field transformation is conducted, wherein digging is performed along the inner sides of ridges to form annular culture ditches, one culture ditch is widened and deepened to form a temporary culture pond, the center of the rice field is taken as a rice planting area, a plurality of field ditches are formed in the rice planting area through digging, and the field ditches are enabled to communicate with the culture ditches and the temporary culture pond; aquatic plants are planted; before putting larvae in the pond, anti-escape walls are arranged on the peripheries of the ridges, anti-escape nets are arranged the peripheries of the temporary culture pond, and protective nets are installed on the other three sides of the rice planting area except the side, adjacent to the temporary rearing pond, of the rice planting area; crab larvae and crayfish larvae are put in the pond; after crayfish culture and fishing are finished, the anti-escape net arranged on the side, adjacent to the rice planting area, of the temporary culture pond is reserved, the anti-escape nets on the other three sides of the temporary culture pond are removed, and river crabs enter the culture ditches; rice is cultivated, the protective netsof the rice planting area and the anti-escape net on the side, adjacent to the temporary culture pond, of the rice planting area are removed, and the river crabs are allowed to enter the rice field; and commercial crabs and rice are harvested. By means of the method, rice, shrimps and crabs are high in yield.

Description

technical field [0001] The invention belongs to the technical field of rice cultivation and aquaculture, and relates to a method for co-cropping shrimps and crabs in rotation in green and high-efficiency rice fields. Background technique [0002] In recent years, rice field farming of crayfish has been widely promoted as an important rice-fishing comprehensive farming model, and has achieved good economic and ecological benefits. Most of the production adopts the "one rice and two shrimps" model, that is, one crop of crayfish is raised before rice planting (crop rotation, one crop of shrimp), and after rice is planted, another crop of crayfish is raised (co-cropping, two crops of shrimp), but the second crop Shrimp is affected by the high temperature in summer, and crayfish are susceptible to bacteria and disease, and they will dig holes to escape the heat at high temperature, resulting in a low catch rate of commercial shrimp. It is difficult to manage in aquaculture produc...

AI Technical Summary

Problems solved by technology

Most of the production adopts the "one rice and two shrimps" model, that is, one crop of crayfish is raised before rice planting (crop rotation, one crop of shrimp), and after rice is planted, another crop of crayfish is raised (co-cropping, two crops of shrimp), but the second crop Shrimp is affected by the high temperature in summer, and crayfish are susceptible to bacteria and disease, and they will dig holes to escape the heat at high temperature, resulting in a low catch rate of commercial shrimp. It is difficult to manage, high in cost, and low in economic benefits in aquaculture production.

The long-term "one rice and two shrimps" model will also lead to the degradation of paddy soil, the reduction of soil organic matter in the plow layer, and the destruction of the micro-ecosystem balance in the farming area. If it is not improved, it will threaten the health of the paddy ecosystem and the sustainability of agriculture. sustainable development

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