The fry cultivation stage means that after about 25 days, the flower is grown to the inch (about 3 centimeters). Since it is summer at this time, it is called summer flower.
Cultivation pond conditions The cultivation pond should be close to the water source, with sufficient water, good water quality, abundant bait source, convenient drainage and irrigation, no sun-shading, no pollution source, which is conducive to the life and growth of the fry, and convenient for feeding and management and pulling nets and fishing. Tangkou is an east-west direction and a rectangular area with an area of ​​(3-5) 667 square meters. The soil quality is clay loam and the water depth is 0.8-1.2 meters. The cultivation pool is equipped with electromechanical equipment such as pumping and oxygenation.
Prepare quicklime clear ponds before releasing seedlings. Dry clear ponds are used at a rate of 80 kg/667 square meters to 100 kg/667 square meters. Water clear ponds (1 meter water depth) are used at a rate of 120 kg/667 square meters to 150 kg/day. 667 square meters, the method is to dissolve the molten lime slurry into the pool evenly and hot, leaving no dead ends to kill pathogenic bacteria, parasites, wild fish and other predators. The fermented livestock and poultry manure was injected into the pond from 7 days to 10 days before the fry in the pond, and the amount of the manure was 200 kg/667 m2 to 300 kg/667 m2. The purpose of fertilization is to cultivate water quality, promote the growth and reproduction of plankton, and provide enough palatability feeds for fry in the future.
The fry released fry to the summer flowering stage, generally adopts the monoculture mode. Storks and storks have stocking densities of 100,000 to 667 square meters, 150,000 to 667 square meters, grass and blue to 80,000 to 667 square meters, 150,000 to 667 square meters, and 150,000 to 10,000. Tail / 667 square meters - 200,000 / 667 square meters. The stocking method is to first adapt the fry bag to the pool, and after the water temperature is the same, the fry is put into the holding box. When the fish fry cluster swims against the water in the box, the cooked egg yolk (generally every 10 Millet fry were fed with 1 egg yolk. After wrapped in double layers of gauze, the egg yolk water was rinsed in the bowl, and then sprinkled uniformly into the holding box for feeding. After the fry were eaten, the holding box was moved to the holding box. Cultivate the pool and put the seedlings up slowly to allow the fry to swim freely into the cultivation pond.
Feeding the fish into the pond for 1 to 5 days, the main feed is soybean milk, which is fed 3 times daily and fed at 9:00, 14:00 and 18:00 respectively. The amount of daily soybeans is 3 kg. /667 square meters. Soymilk should be freshly ground to maintain freshness; fry during the 6 days to 10 days in the pool, in addition to intermittent splashing of soy milk, it is necessary to increase some of the bean dregs, bean cake paste and other condiments, daily feeding 2 times - 3 times The daily amount of soybeans is 6 kg/667 square meters-8 kg/667 square meters. When the water in the breeding pond is light and the natural food is not enough, organic fertilizer should be applied in a timely manner. Generally, the top dressing is applied for 3 days to 4 days, and the topdressing amount is 30 kg/667 square meters to 50 kg/667 square meters. The purpose of topdressing is to increase the nutrient elements of pool water, promote the growth and reproduction of plankton, and ensure that there is a certain amount of natural food organisms for the feeding of fish fry; the fish is fed with floating granular material and the particle size is 0.01 millimeters during the period of 11 days to 25 days. - 0.3 mm, protein content 30% -32%, fed twice a day, respectively, fed at 10:00, 17:00, the daily feeding amount of about 8% of the total weight of fish in the pool. The specific feeding amount should also be controlled flexibly according to the weather, water temperature, water quality, and the active feeding conditions of fry.
Water quality management In the early stage of the fish entering the pond, the water depth in the pool is controlled at 40 cm-60 cm to increase the water temperature and promote the growth and reproduction of plankton. Later, according to the water color and the growth of fry, add water once every 3 days to 5 days, add 10 cm to 15 cm each time, in order to expand the fry growth space. When adding water, try to keep the water flowing straight into the pool. Add water for too long, so as not to fry for a long time, increase physical energy consumption and affect growth. When water is added, it must be filtered with a dense net to prevent enemy fish such as wild fish from entering the cultivation tank with water.
Strengthen the patrol pool to adhere to the patrol pond once a day in the morning and evening, and carefully observe the water quality, fry activity and eating conditions. If it is found that the disease, dead fish should be promptly removed and immediately identify the reasons for the diagnosis of fry have been sick, should be treated promptly; if the discovery of dissolved oxygen is insufficient, should be promptly opened oxygen equipment to keep the pool dissolved oxygen above 5 mg / liter; If there are loopholes in the pool and inlet and outlet, measures should be taken in time to prevent the fish from fleeing.
Timely sub-pool fry after 25 days of careful cultivation, specifications have reached 3 cm summer flower standard, this time should be divided pool, reduce the pool density, promote summer flower growth and improve the species out of the pool specifications. Before the fish fry out of the pool, it should pull the net to exercise 2 times -3 times, in order to enhance the physical fitness and improve the survival rate of the sub-pool.
Chemical intermediate, which is used to make dyes, pesticides, medicine, resins, auxiliaries, plasticizers, etc. from coal tar or petroleum products as Chemical Materials. In China, raw materials and intermediates for the production of 11 categories of fine chemicals are called chemical intermediates. Fine chemicals are classified into 11 categories, including pesticides, dyes, coatings, pigments, reagents and high purity substances, information chemicals, food and feed additives, adhesives, catalysts and various additives, chemicals and daily chemicals, and functional polymers in polymer. In China, raw materials and intermediates for the production of the above 11 categories of fine chemicals are called chemical intermediates.
The main chemical intermediates are:The main chemical intermediates are: 2 - Chloro - 2 - Methylpropane, Lithium Amide, Cyclopentyl Chloride, 4 - Allylanisole Bromocyclopentane.We can do Amino Acid subpackage, filling Healthcare Products in capsules and tablets to meet all your needs. But we always believe that good ingredients will have good function of the product, good function of the product will have more customers, also will have a larger market, only our customers have a larger market, we can have more product sales. We will do our best to support qualified products to expand the market for you.
2-Chloro-2-Methylpropane,Lithium Amide,Cyclopentyl Chloride,4-Allylanisole,Bromocyclopentane
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