1. To escape from the escape, it is necessary to build a wall at the perimeter of the pond to prevent escape. The height of the wall should be about 80-90 cm. The underground part should be 30 cm or more. The inside of the wall should be plastered with cement and sand to form a matte surface. The smoother the easier it is to escape). 2, more than aquatic plants, water hyacinth and duckweed should be the main, because the water blisters are afraid of direct sunlight, they are both the snail's feed, but also for the blisters shading, blisters can also spawn on the top. 3. For each mu of paddy fields, 50 kg of snails should be thrown in one-time. The snails should be large in size. The snails have strong reproduction ability, and they can continuously provide feed for mink. In addition, blood clots of livestock and poultry should be given once a week for the leeches, but the blood clots should not contain salt. In order not to affect the water quality, it is not possible to directly put water in the water. The blood clots can be placed on wooden pieces to make them float on the water. After the water scoop smells the flavour, it can climb up to eat, but blood clots must not be removed more than two days. 4. The leeches shall not be put into the pond directly after the introduction, because the leeches themselves will produce a layer of mucous membrane as a protective layer during transportation. A cool, wet place should be selected around the pond and the leeches should be put there. Climb into the pond naturally to reduce death. 5. When the otters are breeding, they are in the soil under the cover and do not breed in the water. During the breeding period, if the water is diffused through the soil bed for about 7 days, the mink eggs die due to lack of oxygen. Attention should be paid to inspection to ensure the success of breeding. 6, the harvest period is generally in October, the mink to be salvaged should be separated by large, medium, small, large to be filtered out and put back into the pool to stay as a kind of leeches, the second year to continue breeding, the small should be placed in addition Keep in a pond for the second year to raise more than 15 grams of salvage for sale, medium should be processed immediately into dry for sale.
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