1. Putian preparations
Farming and muddy fields should be selected for sheltering from the sun, adequate water, convenient drainage and irrigation, fertile bottoms, more humus, and no pesticide pollution. The area is generally about 1,000 square meters. Before stocking the seedlings, widen and strengthen the field ridges, and use mesh or plastic around the ridges to prevent the wall from escaping. The wall is 30 cm above the pool and buried 30 cm underground to prevent muddy holes from escaping. In addition, a net stop was added to the inlet and outlet, and a number of rakes with an area of ​​5 to 8 square meters and a depth of 60 centimeters or more were excavated in the field. Connected with the rafts, dig trenches with a width and depth of 30-40 cm. The pits and trenches account for about 10% of the total area of ​​Sakata. It is used for high temperatures in the summer, pesticides, fertilizers, and paddy fields. As a muddy habitat, it also facilitates centralized fishing. Before stocking, apply lime to disinfect fish gills and fish gutters, and apply and apply manure such as livestock and manure to cultivate food organisms. The dosage per acre is 100-200 kg.
2. Feeding seedlings
After the drug disappears and the water is turned into fertilizer, you can put it into use. The seedlings can be placed before and after the seedlings. Before the seedlings are introduced, the seedlings should be put into the fish gills and fish gutters. After the lotus seedlings emerge, they will rise with the water level, and then enter and live in the paddies. The seedlings should be placed as early as possible, so that the seedlings can adapt to the environment of Putian as soon as possible, and early feeding and early growth, relatively prolong the growth period. Stocking stocks should be strong in physique, disease-free without injury, specifications, put 4 to 6 centimeters of seedlings per acre, about 25,000 seedlings or 3 to 4 centimeters, about 30,000 seedlings, water-based conditions to be drug-resistant After the water disappears and the water is turned into a fertilizer, you can put it into use. For 3-4 centimeters long pupa species, the stocking density per square metre is 15 to 30, and the flow conditions can be appropriately increased. Before the pupa is applied, the seedlings are soaked with 3 to 4% saline for 8 to 10 minutes.
3. Feeding management
In order to improve the quality of water and provide natural food, animal feeds such as locusts, cockroaches, quail meats, fishmeal, small miscellaneous fish, livestock and poultry waste shall be added, as well as wheat bran, rice bran, bean dregs, and cakes. For the feed, the two feeds can be mixed in a certain proportion and then grouped into groups for feeding, or artificial feeds can be fed directly. Normally, they are fed once a day in the afternoon and afternoon, and the daily feed is 5% to 10% of the loach body weight. Feeding should be based on water quality, weather, and food conditions. When the water temperature is above 15°C, the loach appetite gradually increases, 20-30°C is the proper temperature range for feeding, the appetite is particularly strong at 25-27°C, and the temperature is over 30°C or lower than 15°C and thunderstorm days may not be fed. In addition, reasonable fertilization should be carried out according to the water quality. The transparency of the pool water should be controlled at 15 to 20 cm, and the water color should be yellow-green. When the water temperature reached 30°C, the pool water should be changed frequently and the water depth should be increased. When the muddy ducks often swim to the surface of the floating head to “swallowâ€, indicating that there is lack of oxygen in the water, fertilization should be stopped and new water should be added.
4. Management of Tianshui
The control of the water level in Putian needs to meet both the needs of the growth and development of lotus roots, as well as the requirements for the life and growth of the loach, so the water level should be increased as much as possible without affecting the growth of the lotus root, so as to provide a larger size for the loach as much as possible. Growth and living water space. Tianshui's transparency can be maintained at about 30 cm, pH is between 7.0 and 7.5, and dissolved oxygen is above 3 mg/l. And in accordance with the quality of water, timely injection of new water, high summer water temperature, feeding more, the water is more likely to deteriorate, but should change the water.
5. Reasonable fertilization
Lotus root fertilizer in addition to base fertilizer, but also should be a reasonable application of top dressing, top dressing should be done to meet the growth of lotus root, so that the field water to maintain a certain degree of fat, without affecting the growth of loach. Decomposition of organic fertilizer or chemical fertilizer can be used, and the amount of one application should not be too large when topdressing. When urea or potash is used as top dressing, dry field water can be put first to collect mud loach in the fish gills and fish ditch, and then the whole field can be used to quickly contact the fertilizer with the soil to better facilitate the absorption of roots of lotus root.
6. Anti-escape, anti-adversary, disease prevention
Putian breeding mud loach, to do a good job escape, otherwise it will cause great economic losses to farmers. Therefore, it is necessary to stick to the daily inspection of the pond and find that the collapse of the field collapse, or the blocking of the fish net mesh or the blockage of the slag is promptly repaired or eliminated. In the event of heavy rains and floods, it is necessary to attend the patrol ponds to prevent flooding, collapse, blockage of fishing nets, and blockage of fishing nets.
Muddy enemies include rats, water snakes, waterfowls, and ducks. They should be strictly prevented from entering the breeding fields and trying to drive them out. During the breeding period, the lime field shall be splashed once a month. The fish ditch and the fish gills should be splashed heavily, or splashed with other fishery medicines to prevent the grub from becoming ill.
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