Preparation before stocking Clear pond disinfection The 15-25 cm deep aquaculture pond is applied with quick lime 75-80 kg, evenly spilled, to kill the pool of harmful organisms and pathogenic organisms. Sprinkle the lime and dry it in the pool for 3-4 days. The water depth is 5-10 cm. The whole pool is spattered with a long-acting water disinfectant to quickly and completely kill pathogens and pests. Cultivate basic food organisms Selection of shrimp and temporary standard The choice of shrimp When selecting Penaeus vannamei, it is necessary to choose healthy and lively, slender body, uniform size, clean surface, full muscle, full stomach, sensitive to external stimuli, obvious directional when swimming, body transparency, body without lesions The seedlings. The stocking size of P. vannamei is preferably 2 cm or more, usually 1.2-1.5 cm. The specifications are too small and the survival rate is low. Holding standard crude Early cultured shrimp should be raised in a nylon greenhouse (or greenhouse) and diluted for 10-20 days. The earliest time for holding nylon sheds is determined according to the weather. When outdoor replenishment, the outdoor pond water temperature should reach 20°C or higher, otherwise it will affect the growth of white shrimp. The holding time of nylon sheds is generally around mid-April. Warming with a boiler for warming can be used as early as possible. The stocking densities during temporary raising should not be too large, usually 1500-2000 tails/m3. At the same time to ensure adequate dissolved oxygen, water quality is good. When desalinating, the salinity of the pool in the holding pool should be adjusted according to the pool salinity of the nursery, and then gradually reduced, and the salinity decreased by no more than 1 per day, until the salinity of the pool's water drops to 1-1.5 Torr, and outdoor. When the salinity of the water in the pond is basically close, the seedlings can be released. In the middle and late period, the larvae cultured can use the corner of an empty pond or a cultivating pool and use a plastic sheet to form a small-area holding pool to dilute the crude. The desalination time can be appropriately shorter, usually 7-10 days. The stocking of shrimp Timely restocking of Penaeus vannamei optimum water temperature for the 20-30 °C, in this temperature range of shrimp growth speed, strong physique, strong resistance to disease. Stocking should be done in the morning or in the evening on sunny days. Do not let the seedlings bloom in the sun at noon or when the water quality is cloudy in rainy weather. The time for planting seedlings in our province is appropriate in the middle or late May. Various products of Wolfberry Tea, providing product images and basic parameters with each Wolfberry tea and High Quality Wolfberry tea; Lycium barbarum tea polyphenols easily oxidative change substances, can still drink overnight after brewing. The effect of Wolfberry Bud Tea Goji Berries is a treasure, its leaves, stems, flowers, seeds, roots and skins have health care effects. The wolfberry leaves, wolfberry bud most of the nutrients are hoarding in the shoots and young leaves, and set the whole body benefits of tea and Chinese wolfberry in one, is strong body, longevity, beauty and beauty of the best.We are a professional Chinese supplierLycium barbarum tea polyphenols easily oxidative change substances, can still drink overnight after brewing. The effect of wolfberry bud tea Goji berries is a treasure, its leaves, stems, flowers, seeds, roots and skins have health care effects. The wolfberry leaves, wolfberry bud most of the nutrients are hoarding in the shoots and young leaves, and set the whole body benefits of tea and Chinese wolfberry in one, is strong body, longevity, beauty and beauty of the best. of Wolfberry tea, and look forward to your cooperation! Wolfberry Tea Wolfberry Bud Tea,Wolfberry Leaf Tea,Lycium Barbarum Tea Leaf Tea,Nature Lycium Leaf Tea Ningxia ZhongYuanDa Agel Ecommerce Ltd. , https://www.freshwolfberry.com
The time for culturing basic bait is generally 10-15 days before seedlings are released. After a week or so, the clear pond is filled with water at a depth of 50 cm. Fermented organic fertilizer and microbial preparations are used to cultivate basic food organisms. Mushi 100-150 kilograms of organic fertilizer or 1-1.5 kilograms of biofertilizer fertilizer water, so that the water was yellow-green or Tea-brown. Pool water transparency 25-35 cm, PH value of 8 or so.
After the shrimp enters the holding tank, it will need to feed it. The bait can be fed directly to the abundance of insects, or the filtered juice can be fed after the prawns are washed, and the shrimp can be fed directly after 4 days. The initial feeding amount of bait is 5-10 g/ten thousand, feeding 5-6 times a day, increasing the amount of feed every day by 20-30%. When the shrimp grows to 1.5-2 cm in length, it can be placed in a rearing pool.
Reasonable stocking If the pond conditions and water quality are in good condition, the water injection and drainage are convenient, the oxygen enrichment equipment is complete, and the stocking density can be 35-40,000/mu, or even 50,000-60,000/mu. This kind of density can not only achieve high yield, but also Guaranteed shrimp outlet specifications.