Steps of excavator digging fish pond

1, upper east, lower west, aspect ratio

The direction of the fish pond should be adapted to local conditions, and it is best to choose the east-west direction, which is conducive to the lighting of the fish pond and avoids the wind and waves. The width of the pond is maintained at 28-32 meters, the ratio of length to width is about 5: 1, and the area is 5-6 mu. This width is suitable for breeding, which is convenient for daily feeding management and spraying. In engineering, it is also a suitable length for the arm length of the conventional excavator, and the bank can be completed by left and right excavation without secondary excavation, which wastes labor.

2. The ridge is narrow, with gentle slope and suitable depth.

The width of the ridge surface in the pond should be kept at 0.8- 1.0m, the slope ratio should be 1:2-2.5, and the depth of the pond should be1.5-1.6m. The narrow ridge surface is beneficial to land saving, and the wind and waves in the pond are small, which will damage the pond ridges. The slope should not be too large. When the water temperature is high in summer, the pool is too shallow, and the high water temperature affects food intake. Appropriate ridge standard effectively saves the development cost.

3. Bottom arc, middle groove and concave head

The bottom of the pool is curved, deep in the middle and shallow on both sides. When digging, the excavator only needs to dig 5-8 meters of soil in the middle of the pool bottom, and the radian of the pool bottom can be naturally formed. A 2× 1× 0.5m water-collecting tank is designed at the drainage end of the pond, which is beneficial to the water control at the bottom of the pond when it basks in the sun in spring.

4, water, water, residual

When digging a pond, we should consider the place close to the drainage, leaving room for entering and leaving the road. Don't save too much land, and don't leave enough road access distance, which leads to rework after the project is completed.

Extended data:

Generally, ponds are large in area, deep in water, full of sunlight, unobstructed in water source, fertile in water quality and convenient to transport, which is conducive to the growth of fish and the improvement of production management. Specifically, the following conditions should be met: 1, area and water depth. The size and depth of the pond are closely related to the fish yield. Production practice has proved that a mature fish pond has an area of 4- 10 mu and a water depth of 2-3 meters. The fish pond area can be below 5 mu and the water depth is about 1.5 m.

2. Soil quality and sediments. Fish ponds are mostly dug up, and soil quality has a great influence on water quality. The soil quality of the pond is black soil, followed by clay and sand.

After a period of time in pond culture, a thick layer of silt gradually formed at the bottom of the pond, which was formed by the continuous deposition of residual feed, fertilizer, fish manure and dead organisms, and mixed with the sediment at the bottom of the pond. There is a certain amount of silt in the pond, and the pond water is easy to become fat, which is beneficial to fish farming and has high yield. However, too much silt will worsen the water quality, affect the growth of fish and even cause fish death. Therefore, excessive silt must be removed in time to maintain good water quality.

3. Water source and water quality. Good water quality requires sufficient dissolved oxygen, moderate pH (7-8.5), good water temperature (preferably 25-30℃), rich nutrition, rich water quality (water color is mung bean color, yellow green color, yellow brown color, light soy sauce color, transparency 25-30cm) and no toxic substances.

4. The shape and direction of the pond. The pond is rectangular in shape. The length-width ratio is 2-3: 1 and the width is 30-50m, which is convenient for management and trawling. The direction of the pond should be east-west, which is conducive to prolonging the sunshine time, plankton in the water and increasing dissolved oxygen. There should be no mountains and tall trees around the pond to keep out the wind.

5. Layout and collocation. The pond foundation should not be too narrow. Generally, there should be a base surface of more than 2 meters. When building supporting livestock pens, it is required to be wider. At the same time, it is necessary to build a perfect drainage and irrigation system, so that each fish pond can be drained and irrigated independently to avoid ponds being connected in series. The bottom of the pond should be inclined from the irrigation side to the drainage side to facilitate the drainage of pond water. At the same time, the power supply should be considered in order to use the aerator.