In recent years, the main mode of development of the muddy industry is the high density of the main culture. Due to the shallow water level of most breeding ponds and large feed input, the eutrophic cyanobacteria grow vigorously, causing threats to the environment and the threat of mud quality. In order to speed up the healthy development of the loach industry, based on the special experiments, a model of loach eco-culture will be summarized for your colleagues' reference.
I. Tongkou condition: The area is 2-3 mu, the water depth is 0.7-1.5 meters, the thickness of sludge is 15 cm, the soil quality is loam, the water-holding capacity is strong, the water inlet and drainage system is complete, and the water source water quality meets the fishery water quality standards. Build anti-escape facilities and bird repellent facilities.
Second, pond clearing:
The muddy seedlings were sterilized in clear ponds 15 days before the next pond. First drain the pool water, check for leaks, and then spill the calcined water on a per-mu basis. Qingtang 7 days into the water, put into the first 10 days of basal fertilizer, raising water quality, acres of fermentation manure 150 kg.
Third, seed stocking:
1. Restocking time: It is advisable to stocking in April-June.
2, seed disinfection: 10% povidone iodine solution 10PPM disinfection 10 minutes.
3, stocking density: 200-300 kg per acre Fangmiao.
Fourth, the spinach planting:
Four bamboo cuttings or polyhexene meshes were placed on each of the ponds, and four corners were fixed with bamboo poles. Each section was 2-3 square meters. Bamboo cutting was used to punch and cut the water spinach, with 80 plants per square meter. The cut time of water spinach is better when the water quality is more fat than cutting.
Fifth, feed feeding:
Adhere to the principle of "four determinants" feeding, set up 3 feeding points for each pond mouth, and set up a feeding table at the feeding point to facilitate observation of food residue. Each day and night will be fed 1 time, depending on the amount of feeding. The water quality and water temperature conditions depend on the amount of 4-5% of body weight from June to July and 10% of body weight from August to October.
Sixth, daily management:
At the beginning of the seedling stage, they adhered to the patrol pond and observed the activities of mud loach, and carried out drug prevention and treatment according to the situation. In the middle and late period, the growth status was measured in time. The growth of loach was measured every half month. The amount of feed was adjusted timely according to weight gain, and daily records were made. Pruning should be carried out in time according to the growth of the water spinach, and the enemy birds should be promptly driven.
VII. Disease Prevention and Control:
Regular use of EM bacteria for water quality regulation, regular disinfection of water with chlorine dioxide.
Eight, effect:
Tangkou is used to grow water spinach, and EM bacteria are used to regulate water quality regularly. The water quality of the water body is tender and cool, and the muddy water floats less. The general pond is more fat, showing the strong growth of blue algae, muddy floating more. There was no significant difference in growth rate and yield from the Tangkou of the general population. From the investigation and analysis of the input, the planting aquatic plants in the Tangkou changed the water and used fish medicines, which was most significant compared with the high-density Tangkou, and saved more than 1,000 yuan per mu. .
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