Fish farming in rice fields is a three-dimensional breeding model that combines rice cultivation with fish farming. Fish is a natural weeder in rice fields, and fish excreta rich in nutrients such as nitrogen, phosphorus and potassium have become high-quality rice fields. During the foraging process, the fish flipped the topsoil of the paddy field, which improved the soil structure, increased soil permeability, and ate most of the eggs and larvae in the paddy fields to reduce the occurrence of pests and diseases. The rice-fish farming model can obtain stable aquatic products, reduce the input of chemical fertilizers and pesticides, control non-point source pollution, and ensure the quality of rice. Suitable area The field requires sufficient water source, convenient drainage and irrigation, good water and fertilizer retention performance, and suitable for single and double season rice areas with certain breeding habits and foundations. Field works are not matched, and irrigation and drainage fields are not suitable. Technical goal 1. Yield and profit target: The rice yield is about 450 kg per mu, and the fish yield is about 50 kg per mu. The comprehensive benefit of rice field and acreage for raising conventional fish is more than 1,000 yuan, and the comprehensive benefit of rice field and acre for breeding special fish is more than 1,500 yuan. 2. Quality objectives: The quality of rice and fish reaches the above green standard. Technical points 1. Rice field selection It is advisable to choose a hilly mountainous area with good ecological environment and good soil water retention performance. The water source is abundant, the water quality is good, the irrigation and drainage is convenient, the flooding is not easy, the soil organic matter content is high, and there is no pollution. The rice fields with less pests and diseases occur in the past years. 2. Rice field transformation After arranging about 1,500 kilograms of fermented and fermented farmyard manure per acre, the soil is deeply cultivated. Snoring, tamping and heightening around the field, and inserting a fishing net on it; excavating the ring-shaped fish gully with a width of 50-100 cm and a depth of 50-60 cm around the inner side of the field and the center of the field. â•«,#†and other shapes of fish gullies, fish gullies are connected to each other. At the same time, digging a fish that is 1 meter deep and about 3-5 square meters in the center of the Tianjiao or Tian Center near the water inlet, set a 1.5-meter-high fish climbing on the fish with a sunshade or planting loofah, lentils and other climbing plants. Awnings for fish to inhabit. In the opposite corners of the rice field, the inlet and outlet are provided, and the fish-filling grille is arranged at the inlet and outlet. The lower end is inserted into the hard soil by 30 cm, the upper part is 30-40 cm higher than the field, and the width of the net is 40-60 wider than the inlet and outlet. cm. 3. Rice field disinfection Before rice transplanting, the rice fields shall be disinfected in clear fields, and 40-50 kg of quicklime or 4-5 kg ​​of bleaching powder shall be applied per mu to eliminate harmful organisms and eliminate the source of the bacteria. 4. Rice planting It is advisable to select high-quality and high-yield hybrid varieties with compact plant type, strong resistance to pests and diseases, and resistance to lodging and lodging, such as evening ç±¼40; wide-row narrow plants and east-west planting, and appropriate increase of planting density on both sides of the fish ditch. To play a marginal effect. For rice cultivation and field management, please refer to other related articles of Hui Nong. 5. Seed stocking In the middle of May, after the seedlings returned to green, choose healthy grass carp, squid, squid and other fry with a body weight of 50-150 grams, put them in 5% salt water for 5-10 minutes, and stock them in the excavated In the fish ditch, the stocking density is 7.5-10 kg per mu. 6. Feed delivery Grass carp, carp and carp are all omnivorous fish. Artificial feeds are mainly rice bran, grass and other miscellaneous grains, and can also be fed fermented livestock manure (with biogas slurry as well). It is usually delivered every 7-10 days. 7. Daily management Every day, the field is observed. First, observe the activity of the fish to see if there is any abnormality. If there is an abnormal situation such as floating head, it should be dealt with in time; the second is to check whether there are pests and diseases, if there is any occurrence, it is necessary to prevent it in time; The phenomenon of collapse and water leakage, the integrity of the inlet and outlet, and the barrier of the fish are not strong; the fourth is to timely remove the debris from the blocked fish fence in the flood season to ensure smooth drainage; New water to ensure the water level in the field. 8. Fish disease prevention Disease prevention and treatment is mainly based on prevention. In the high temperature season, use 1-2 kg of quicklime or 0.5-1 kg of bleached powdered water every half month of the season, and then spray it once along the fish ditch and fish to prevent bacterial and parasitic fish diseases; feed with oxytetracycline or allicin. Fish prevent intestinal inflammation. If a fish disease occurs, it can be drained slowly, and the fish will gradually be rushed to the fish ditch. According to the fish disease treatment method of pond fish culture, symptomatic medication. Generally, after 2-3 days of application of the fishery medicine, the water level of the paddy field should be restored. 9. Rice pest control For rice pests and diseases, please refer to the article on the prevention and control of other rice pests and diseases in Huinong School. 10. Fishing harvest One week before fishing, first clear the fish ditch, remove the silt, and then slowly release the water, so that the fish are all concentrated in the fish ditch and fish slippery, which is conducive to fishing. The mid-season rice can be harvested and listed at the end of August, and the double-season rice can be postponed until From late September to early October. Well, the above is all the technical points of today's rice-fish farming green ecological breeding technology. 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