Frozen Black Squid,Frozen Black Squid Whole,Frozen squid cleaned IQF,Frozen Whole Black Squid Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com
Top dressing bait
It is well-known that there is a biological food chain for fish farming, such as cockroaches, squid, etc., which need to filter for plankton. Therefore, in the autumn, it should be seen that water fertilization, cultivation of biological food bait in order to meet the needs of the growth of carp and carp filter. Fertilization in the fall should adhere to a small number of principles. If it is a fertilizer pond, applying a small amount of fertilizer can not only avoid the deterioration of water quality, but also keep the water quality fat, live, tender and cool. Generally, 2.5 mu of urea and 5 kg of superphosphate are applied in order to make the pool water green or tea green suitable. If it is a semi-thin pond of clear water, the excrement of livestock and poultry excreted and human feces is mainly used. Mushi 400 to 500 kilograms, applied 7 to 10 days apart, can quickly cultivate plankton, to meet the needs of fish feeding. At the end of autumn, if the water temperature drops, organic fertilizer should be used to make the pool water become fat, the water color turns thick, and the plankton is promoted to multiply, providing sufficient nutrition for the wintering of the fish.
The temperature in the autumn began to drop significantly, the temperature difference between day and night was large, and fish began to accumulate energy to prepare for winter. At this time, on the one hand, it is necessary to ensure that sufficient green feed is fed, which is fed once a day in the afternoon and in the afternoon, and it is advisable to eat within 2 hours after each feeding; on the other hand, it is necessary to increase the amount of fodder, which can be used as bran. Rice bran, peanut bran, soybean meal and other mixed preparations were fed once a day, and the amount of fish fed was 2.5% to 3% of the total amount of fish. The amount of feed at the end of autumn should be increased appropriately to ensure the nutritional requirements of the fish.
Do a good job of water quality
Maintaining good water quality at all times and creating a good environment for fish growth are the keys to promoting long-term growth of fish.
Generally should be poured every 7 to 10 days of new water, each changing the amount of water 20 to 30 centimeters deep; second is the splash of lime 20 kilograms per acre surface. Quicklime can neutralize acidity, increase the pH of water body, release nutrients, improve water quality and sediment quality, and it is advisable to splash it once or twice a month. If it is a fertilizer pond or a fish pond that is mainly fed with concentrate feed, and the ponds of supporting livestock and poultry farms, the water quality is easily eutrophic. It is best to use bamboo rafts for every mu pond and plant it on 50-60 square meters of water. Hydroponics and water peanuts, etc., to absorb excess ammonia nitrogen, to improve the regulation of water quality. At the same time, water peanut leaves can also be fed grass carp.
Prevent floating head
For ponds with large intensive density and high yield, due to the large amount of fertilizer applied for feeding, the organic matter content is high, and the fish activities are frequent, the phenomenon of anoxic floating heads can easily occur. At this time, it is necessary to strengthen the patrol pool in the morning and evening, especially in the middle of the night. During feeding, once fish were found to be eating less, eating longer, and more residual bait in the pond, especially when the grass carp headland was swimming without signs of grazing, the water began to lack oxygen. If waves can be seen on the surface of the water during the day, the fish groups are frightened and visible waves are visible on the surface of the water, indicating that “drifting heads†have appeared. If measures are not taken in time, flooding is likely to occur. When fish heads are found to have signs of floating heads, they need to immediately start aerators to increase oxygen, or to inject fresh water into ponds to increase the amount of dissolved oxygen. If there is no new water infusion and there is no aeration machine to increase oxygen, use 5 alum per acre.
Autumn Fish Fertility Increase Production Management Technology
Autumn is the golden period for fish to grow into a long-lasting crop, and a good management of the aquaculture during this period can increase production by about 30%. The following measures should be taken in the fall of the fish: