Red star apple;The largest can reach three or four hundred grams.Good color, ripe apple red, very appetizing;The fruit is round;The fruit is smooth, waxy, and has a lot of powder. When the fruit is first colored, there are obvious intermittent red stripes, followed by red clouds. After fully coloring, the whole fruit is thick red and has obvious purple and thick stripes.The pulp is light yellow, crisp, juicy and sweet.The bigger advantage is that it has a strong aroma, which is that after eating the apple, the mouth can still leave a fragrance.We provide the best quality for the customer, if you have any need, please tell us.
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Green shrimp artificial breeding technology
Selection of broodstock Broilers can be caught in natural water bodies, and mature individuals can also be selected among farmed shrimp. The selected broodstock should be physically sound, disease-free, non-injured, strong in vigor, well-developed and full of gonads, and 4 cm or more in length. Wintering of broodstock management Every year from December to March of the following year is the wintering period of the shrimps, which can be used for wintering in ponds or cages: the pond area is 1 to 2 mu and the water depth is 1.5 meters or more; the cage area is 50 to 100 square meters and the depth is 1.2 meters. , The pool of water, peanuts, water hyacinths and other water plants, cages can be put some brown, willow root or other plants. Stocking densities can put 5 to 10 tails per square meter, and 15 to 20 tails for running water or inflatable pools. During the winter, the broodstock is rarely active. Occasionally they feed and may feed some concentrates from time to time. The key is to maintain water quality and prevent predators. Incubation (1) Pond Incubation: The pond area is 0.5-2 acres, and the water depth is 1-1.5 meters. The sediment quality is better with silt and the floating mud should not be too much. In the pond, some water-repellent and water-repellent plants are planted, accounting for about 1/4 of the pool surface. In April and May, 500 to 800 females are stocked per mu, and 300 to 500 males are reared: 5% of the body weight is dropped every 2 days. 1 fine feed. At the water temperature of 20°C, the first batch of prawns hatched about 10 days after the brooding broodstock went down. (2) Incubation of cages: First, a large net cage with an area of ​​about 70 square meters and a height of 1.7 meters is made with a mesh of 196 mesh per square centimeter, with 2 to 3 square meters of water plants. Place two small cages of 2 cubic meters of water in large boxes. The mesh is 9 mesh per square centimeter and a small amount of plants are placed in the box. Each cage holds 200 to 300 female eggs. After about 1 week, the larvae hatch out and the small boxes are removed. The larvae in the large boxes are fed with soy milk twice a day, and a small amount of bran and peanut cake are added after half a month. , about 25 days after emergence. (3) Incubation in indoor pool: The cement pool is 0.8 to 1 meter deep. Well water is preferred, and the dissolved oxygen is kept at about 8 mg/l. The eye shank on one side of the broodstock is cut off from the base, and the knife edge is disinfected with 70% alcohol. After being put into the spawning pool, put 8 to 10 pairs of broodstock per cubic meter of water and feed some concentrated feed every day until the males are released after spawning. Keep the female eggs in the hatchery and keep them in the pond until the eggs are hatched more than 80%. After about 1 month of cultivation, the shrimp can be cultivated when it reaches 1.5-2 cm.