Fish farming in paddy fields is the use of shallow water environment in paddy fields. At the same time when rice is grown, fish products such as fish and shrimp are cultured.
There are many benefits to fish farming in paddy fields, mainly including: low investment and high income; weeding and disinfestation are conducive to the growth of rice; improved fertility of paddy fields and improved soils;
In recent years, on the basis of summarizing the traditional experience of rice and fish symbiosis, our province has explored and summed up a set of pit-type rice field fish farming models that are known to the masses as “a thousand kilograms of rice, a hundred kilograms of fishâ€. Farmers, especially mountain farmers, have provided a good way out of poverty.
First, the effect of stable grain production increases significantly. Gully pit type rice farming fish, pit ditch accounts for about 10% of the rice field area, from the perspective of common sense, this will reduce rice production, but the test results show that rice yield increased without diminishing. The paddy rice yield per acre in the control field of paddy rice and fish farming was 410 kg, while that of a paddy paddy field using pit ditch paddy field was an average of 450.9 kg per mu, which increased production by 10%. The reason for this is that the rice stalks occupied by the fish ditch and the fish pit are closely inserted into the ditch and the periphery of the pit. On the surface, they account for 10% of the area of ​​the paddy field, but the number of rice transplanters only decreases by about 5%; the second is the fish in the ditch pit. Wide range of activities in rice fields can weed and eat insects, slop fertilization, and promote the growth of rice, especially the rice around the gully, and increase rice satiety.
The second is the significant increase in farmers' income. According to the data provided by the Wenzhou Ocean and Fisheries Bureau, from the input and output statistics of the control field of fishery rice fields and non-fish culture, the average per mu rice production area is 450.9 kg, the fish production is 57.7 kg, and the mu production value is 2813.16 yuan. Deduction of various expenses of 1,482 yuan / mu, net profit of 1,331.16 yuan; control field average production of 410 kg of rice, mu production value of 820 yuan, the cost of 676.5 yuan, net profit of only 143.5 yuan. Per acre of fish rice fields can increase income for farmers 1187.66 yuan, the effect of increasing income is very obvious.
The third is the prominent role of environmental improvement. From the experimental point of view, compared with the non-fish culture field, the use of chemical fertilizers was reduced by 44.4% and the use of pesticides was reduced by 60%. After the fish was harvested, the content of soil organic matter in the fishery paddy fields was 30.43 g/kg, which was 12.4% higher than the control field (27.06 g/kg). It can be seen that fish farming in paddy fields has a good role in enhancing soil fertility and improving farmland ecological environment; at the same time, rice quality and quality and safety have also been improved.
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