Save water, use drugs, reduce pollution. How to raise loach in rice fields

Raising Loach in rice field has many advantages: first, it has two uses of one water, two harvests in one place, and high economic benefits; second, it has outstanding ecological effects, which mainly shows that Loach can directly eat some harmful insects, play part of the function of biological pest control, save pesticides and reduce food pollution.

Raising Loach in Paddy Field

Misgurnus anguillicaudatus likes to inhabit on the surface of the putrid soil at the bottom. It can breathe not only with gills but also with skin and intestines. Misgurnus anguillicaudatus is an omnivorous fish, which likes to feed at night. It feeds on insects, small crustaceans, tender leaves of aquatic plants, diatoms, cyanobacteria, green algae, xanthophyta, zooplankton and so on. Artificial feeding can be fed, such as peanut cake, rice bran, wheat bran, bean cake, silkworm pupa powder, snails, earthworms, water worms, fish, poultry and livestock viscera and so on. Misgurnus anguillicaudatus is small, light, gluttonous, overfull, easy to cause indigestion, affect normal breathing, causing bloating to death.

Misgurnus anguillicaudatus is a warm water fish, which is yellow in rice field. Its growth water temperature is 15 ℃ ~ 34 ℃, and the optimum temperature is 24 ℃ ~ 30 ℃. When the water temperature is lower than 35 ℃ ~ 6 ℃ or higher than 35 ℃ ~ 36 ℃, it will dive into the 10cm~30cm mud layer for dormancy.

Rice field construction: to raise Loach in rice field, we should choose a rice field with sufficient water source and good water quality, covering an area of 2 muri 10 mu, and build an anti-escape wall with high 80cm around the rice field with cement, plastic sheet, film, screen window and so on (mud 30cm). Build a wide 20cm step along the ridge, 15cm away from the top of the ridge. A zigzag ditch is dug around and in the center of the field. The width and depth of the ditch is 50cm. There is one inlet, one drain pipe and one overflow pipe, and the pipe mouth is intercepted with fine barbed wire. The drains are usually sealed with cement.

Loach species stocking: Loach species had better come from the original Loach farm or caught from natural waters, requiring strong physique, disease-free and injury-free, age 2 years old, female weight 15Mel 25g, male more than 12g. 1000 kg fermented pig manure was applied per mu, and the influent water was filtered into the field. The water depth in the ditch was 30-40cm, and the water transparency was about 25cm. After the seedlings turn green, put 2-25000 loach seedlings of 5 grams per mu. Before stocking, soak them with 3% salt for 10 minutes and enter the field after disinfection.

Feeding and management: fertilization, in order to ensure continuous plankton, organic fertilizer must be applied timely, a small amount and evenly in the process of breeding. Fertilize 150 kg fertilizer per mu every 10m / m for 15 days. In addition, according to the water color, about 1.5 kg urea or 2.5 kg ammonia bicarbonate per mu is applied each time to keep the water body yellow and green.

Bait: due to the high density of Loach in the field, artificial feed should be fed, such as bean cake, silkworm pupa powder, fly maggots, earthworms, snails, clams, slaughterhouse scraps, rice bran, bean dregs, rapeseed cake, wheat bran, etc., to supplement natural bait. July-August is the peak growing season of Loach. Silkworm pupa powder is required to reach 15%, meat and bone powder 10%, bean cake 25%, bait twice a day, and the feeding rate is 10%. From September to October, plant feeds such as wheat bran and rice bran are mainly fed once a day in the morning and once in the afternoon, accounting for 2% of the total weight of Loach. 4%. About 2% in early spring and late autumn. According to the feeding situation of Loach, it is generally appropriate to finish eating within 2 hours after each feeding.

Control water level: the actual water level above the field surface is generally controlled above 5cm. Add new water at the right time, usually once every half a month, and the high temperature in summer should deepen the water level appropriately.

Disease prevention and control: Misgurnus anguillicaudatus is suitable for paddy field culture, generally no disease occurs. In order to prevent red skin disease, sprinkle it in the whole pool with 15 kilograms of raw lime pulp per mu every month. The time of applying pesticide to rice is usually 5 days before transplanting or 7 days after transplanting.

Daily management: patrol the fields twice a day, check the escape prevention facilities, especially in rainy days, and check for loopholes. Prevent the invasion of natural enemies (such as water snakes, ducks, etc.) and observe the activity and feeding of Loach. Water containing highly toxic pesticides such as methamidophos, toxicol, carbofuran and pentachlorophenol sodium is strictly prohibited from entering rice fields.

Fishing method: first, flushing fishing, near the nozzle, spread the net, release water from the inlet, because the Loach has the characteristics of water, after a certain period of time, the net will be picked up and caught. This method is suitable for the love activity of Loach when the water temperature is about 20 ℃; the second is bait trapping, putting the fried bran or wheat bran in the bamboo cage, placing the cage in the ditch to lure the Loach into the cage; the third is to catch the dry field and slowly release the dry field water, so that the Loach is concentrated in the exposed place of the ditch soil to catch.