Grass-raising fish can use the pond's barren slopes and wastelands. Pond mud can be used as a fertilizer for grasses, and forage grasses can be fed back to the pond to feed fish. This will increase fish production to a certain extent. Now we will introduce the technical points of grass-breeding fish farming as follows: 1. The demonstration and promotion of large areas of clever cutting forage grasses proves that as long as the fertilizer and water are sufficient and the cornices are properly arranged, generally, an acre of water is planted with 350-400 square meters of grassland. It can not only meet the demand of fish farming, but also guarantee the supply of forage grass for the whole year. In the spring, grass should be planted with ryegrass as the main species, and about 200 square meters will be planted at the end of August and the beginning of September. In April of the following year, the grazing is started. Generally, it is possible to cut 3 茬-4 æ¯å¹´ per year, about 25 days apart. When the grass grows to 50 centimeters to 60 centimeters, it can be castrated, and the yield per mu is about 4,000 to 5000 kilograms. Sudan grass and hybrid Pennisetum are the main varieties of summer grass, with about 200 square meters planted per mu of water. Sudan grass can be planted in stages, sowed in early March, available in the middle of June; available early in June, available in late July, and can be cut every 20 days to 25 days, when the grass grows to 70 centimeters - When it is 80 centimeters, it can be castrated, producing 8000-1000 kg of grass per mu. Hybrid Pennisetum began to castrate from June to July and can cut 5 times -6 times. Alfalfa is a perennial forage grass with excellent grass quality. It can be planted in spring and autumn. It is planted with about 150 square meters per acre of water surface. Grass is supplied from the beginning of April and can be castrated three times before the end of June. It can be used with ryegrass. Feeding. During the summer and October-November period of the summer, the grass can be cut and used to replace the Sudan grass and hybrid Pennisetum. After each kind of forage and after each cutting, it is necessary to pay attention to timely cultivation and fertilizer so as to promote its regeneration and growth. 2. Properly pairing with mixed-cultivation grasses and fishes should be based on herbivorous fishes such as grass carp and group head lice, with mixed squid, squid, and other omnivorous fish, while the stocking ratio of carp and carp can be appropriate. Zoom out. Grass carp has strong feeding ability, fast growth, and low mortality rate. A lot of stocking is most beneficial to increase production. Although the head squid has a slow growth, it has a high economic value and can devour the grass squid. Because of its inability to feed on grass carp, it is necessary to win by number when stocking. Carp, squid, etc. eat residual larvae, which can reduce the decomposition of organic matter in the bottom of the pool, so the proportion of stocking can increase with the increase in total output and yield. The proportion of carp and carp stocking is relatively small. The specific proportions of all kinds of fish are: 200 to 250 tails of grass carp per mu of water surface stock size of 0.15 to 0.25 kg, and 180 to 230 tails of head of fish, 50 ton of head size. Water surface 250 tails - 300 tails; 40 grams - 50 grams of squid 80 tails - 100 tails; 25 grams - 30 grams of squid 250 tails - 300 tails; 60 grams - 80 grams of squid 150 tails - 180 fishes; 80 grams - 100 grams of salmon 60 tails - 80 tails. The time for launching is appropriate in late February and early March. At the end of the year, 700 kg of fresh fish can be caught per acre, and the output per mu can reach more than 500 kg, excluding the weight of the fish. 3. Strengthen Feeding Management The amount of forage grass fed daily can be determined according to the climate, water quality, fish appetite, etc., according to the day's climate, water quality, fish appetite, etc. The feeding time should generally be at 8 am When feeding at -9 o'clock, it is advisable to feed it at 4 to 5 pm. If this is done before this time, the amount of straw thrown on the next day should be increased as appropriate; if it is not finished or the weather is bad, the next day can be reduced as appropriate. Residual grass clippings should be removed the evening of the same day to prevent rot from affecting water quality. For grass-fish ponds, top-dressing organic manure is generally used, and only a small amount of fertilizer is applied during the high temperature season. The method, quantity, and number of topdressing should be flexibly controlled according to season, water temperature, and water color. The principles to be followed are: high-temperature weather, indiscriminate application, less application, less or no application on cloudy or rainy days, less water, and more water. Organic manure is generally applied every 10 days and 15 days. Each time, the amount of urea applied can be 1 kilogram to 1.5 kilograms per kilogram, and 1.5 kilograms to 2 kilograms of phosphate fertilizer can be applied. After the two chemical fertilizers are dissolved in water, the whole pool is splashed. Grass-breeding fish should be given a small amount of water at the beginning of stocking. Water should be added every 5 days to 7 days. Each time new water should be filled with 10 cm to 15 cm. By mid-June, the maximum water level should be 2 m to 2.5 m. , Inject water once every 10 days or so. For ponds with poor water quality, the amount of water to be changed each time should be about 1/3 of the original, so that the water quality can be kept as fat, live, tender, cool, and transparent, preferably between 25 cm and 30 cm, and the pH is 7-8. .
Small-Black Wolfberry-Bulk
Dried Type Black Wolfberry,Dried Grapes Crispy,Certified Organic Black Goji Berry
Black wolfberry, Red dates Co.,Ltd , http://www.chwolfberry.com