A new model of high-yield and high-efficiency integrated breeding of pond fishes

In the pond where the main cultivated grass carp is provided, a dedicated cage is also used to raise (or raise) the scutellaria. Each 667 square meters (1 mus) can produce 500 kilograms of commercial Fish and astragalus (double jin), and the net profit is more than 10,000 yuan. It is a new model of good integrated breeding that makes full use of water bodies and greatly improves economic efficiency. The author will organize specific practices as follows for the reader's reference.

1. Pond conditions and disinfection pond area 3300-6670 square meters (5-10 acres), water depth of 2-2.5 meters, adequate light, quiet environment, plenty of water, good water quality, convenient drainage and drainage, the bottom is relatively flat. Before the fish puffers are stocked, they must use clear lime to completely disinfect the ponds to kill pests and diseases. The amount is: dry pool (about 10 cm deep at the bottom of the pool) 75 kg of water per 667 square meters of the whole pool sprinkled; or with water (in terms of 1 meter water depth) 150 kg per 667 square meters of water Quanchiposa. 7-10 days after the release of fingerlings.

2. Set cages and set up cages for aquatic grass transplanting ponds. Each cage has an area of ​​15 to 20 square meters, but the total area of ​​cages does not exceed 20% of the total surface area of ​​the pond. There are two types of cage setups: fixed and automatic. The cages are arranged in rows, with two rows as a group. Between the two rows is the “bridge” for feeding management, and the “bridge” is the guard shed. The fixed type uses long bamboo wood piles to enter the bottom of the pool. Each cage has four piles. The neighboring cages can share the wooden piles. The wooden piles are thick and firm, and the mud is deep and stable, 80-100 above the normal surface. cm. The piles are arranged neatly and vertically and horizontally on the same straight line. Nylon ropes can be connected between the piles and piles, and the fiber ropes can be fixed to the outer ends of the boxes to make the piles more stable. The four corner ropes of the cages are stably tied to the stakes and tensioned to open the cages so that the upper edge of the cages is more than 60 cm above the water to prevent escape. Automatic lifting type is to replace wooden stakes with large buoyancy objects such as oil drums, and to fix the frame horizontally with reinforced angle iron or bamboo wood according to the size of the cage, and the four corners of the cage are tied to the vertical piles on the frame. Automatic lifting cages can lift automatically as the water level rises. Heavy rain and flooding have little effect on their anti-escape effects. In addition, this method can not only use a pedestrian management bridge between two rows of boxes, but also facilitates the construction of a pedestrian bridge around the box, which provides convenient conditions for feeding feedstuffs, observing jaundice, and other operations. The cost is slightly higher than the fixed price. The variety of aquatic weeds introduced into the cages is ideal for water peanuts. It can prevent heatstroke, cool water, support carcasses and provide excellent habitats. In the middle and lower reaches of the Yangtze River, the sources of water peanuts can be collected from the wild in March and April every year to move into cages for cultivation. Water plants in cages account for more than 80% of the surface of the water, and the growth of dense plants can only be used to raise seedlings.

3. It is advisable that fish in stocking ponds be stocked in winter and spring. Each 667 square meters stocks 150 white tails weighing 0.2-0.25 kilograms, 300 tail weights of 0.075-0.13 kilograms, 100 tails of 0.2-0.25 kilograms of carp tail weight, and 180 tails of grass carp weight 0.2-0.25 kilograms. The head of the head of the head is 0.05 pounds and the tail of the carp is 0.025 kg. In addition, it is also possible to increase the cultivation of fingerlings of summer fish fry. The stocking of the seedlings is different because of different purposes, and the stocking time is sooner or later. If considering the double benefits of growth gain and seasonal difference, stocking time must start from March to April, stocking is early, growth time is long, and weight gain is large; if just to earn the seasonal price difference, do not increase weight, then pre-winter Autumn seedlings can be raised temporarily. The stocking density of Astragalus in cages is 2-10 kg per square meter. If dual purposes are taken into account, the stocking density should be small, and the stocking density in winter can be large; there can be large stocking densities with technical experience, whereas the stocking amount should be reduced. The stocking of Astragalus seedlings must strictly control the quality, size of the seedlings, and soaking and disinfecting “three levels” before stocking.

4. The feedstuffs for feedstuffs for fish are compounded feeds, cakes and grasses; the feedstuffs for astragalus are mainly feedstuffs for complex feedstuffs, alfalfa, small junk fish, fresh fish, snail meat, liver and intestine and other live baits of livestock and poultry. It requires fresh feed, nutritious and palatable, and feeds on the feed table. (Each of the yellow locusts in the cage is set on a 2-4 square meter basis, and is made of net cloth and bamboo pieces. 60-40 cm wide rectangular or square, sinking at the bottom edge of the cage). The fish were fed once in the afternoon and once in the evening. The weather is fine and the water temperature is suitable (fish 18-32°C, Astragalus 21-28°C). The water quality is good, the individuals are large, the food is prosperous, and the fodder has more feed. Otherwise, the feeding amount should be reduced.

5. Fertilization and water quality management The principle of fertilization is to reapply basal fertilizer and apply topdressing skillfully, mainly organic fertilizer, supplemented by chemical fertilizer. Three days after the pond is completely sterilized, 300-400 kg of organic fertilizer per 667 m 2 of fermentation is used as a base fertilizer. Fermentation of organic fertilizer is often applied as a top dressing during the cultivation process to keep the pool water “fertile, live, tender, and cool”. Transparency is about 30 centimeters, and there is no heavy floatation of fish. 15-20 days to wash around the cage, so that the water inside and outside the tank can be fully exchanged, Huang Qi can be adapted. Poor water quality in ponds should be scientifically started with aerators or replaced with new ones.

6. Disease prevention Fish and yellow locust disease control should take regular comprehensive measures, that is, the ponds are completely sterilized before stocking, the healthy bred stocks are selected, the stocks are immersed and sterilized when they are stocked, and the drugs used for anti-inflammatory sterilization are often added to the feed. Every 20 days or so ponds use quicklime (or bleach) and trichlorfon alternately. Common diseases of fish are rotten gills, enteritis, red skin, and fulminant bacterial diseases. Common diseases of jaundice are enteritis and erythroderma. It is necessary to prevent them in time and find that the disease is treated in time.

7. The ponds inspected the ponds in the morning and in the evening to observe the fish and jaundice activities and prevent the floating of the fish. Frequently check the damage of the cage and the stability of the stakes, and prevent livestock, birds, and other birds from harming.

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