Since the beginning of the winter, a large number of grass carp grasses have entered the Huaibin market, and the price of fish has dropped significantly. Especially during the winter of this year, conventional fish prices have been the lowest in recent years. At this time, selling fish is actually not worth the candle. If you are able to support the Spring Festival or sell it in April or May of next year, you will get better results. Practice has shown that grass carp rearing for 2 to 3 months, in the case of adequate green feed, the general increase of 20%, the price rose 15% to 20%. Taking a 2-kilogram grass carp as an example, the price is RMB 14 for dry ponds, and it can be sold for about RMB 20 when it is sold for sale in May, increasing its income by 13%.
Management of grass carp technology points:
1. Choosing a suitable pond for conservation: The area of ​​the pond should be 2 to 5 mu. The area should not be too large. The water depth should be 1.5 to 2.0 meters. It should not be too deep and the bottom of the pool should be flat. This is convenient for fishing at any time.
2. Choose the type and size of the fish: The suitable fish is mainly grass carp and carp. Carp, carp and carp should not be raised. Fishes generally require more than 1 kilogram of fish, grass carp is the best 2 kilograms or more, this type of fish can be listed at any time when the price is good.
3. Determine a reasonable stocking density: After the fish ponds are bred with enough fish for normal aquaculture production, 750 to 1,250 kilograms of grass carp or 1,000 to 1,500 kilograms of squid can be stored. The total weight is not to exceed 2,000 kilograms. .
4. Elaborate management: Feed the feed at regular intervals. Grass carp can be fed with high quality green fodder such as ryegrass, and it is advisable to feed it in 24 hours. Can also be fed from 1% to 2% of the fish's body weight with pelleted diet, once daily. The fish pond can be fed with dried vegetables, dried peanuts, or fermented pig manure and chicken manure. Maintain a steady water depth and regularly add fresh water.
Baby Monitor Security Camera
The performance of the Baby Monitor Security Camera
The performance of the baby monitor is reflected by its built-in parameters and function combination. The following shows some properties that a high-quality and applicable baby monitor should have. The requirements for baby monitors in this part apply to all audio/video, digital/analog home baby monitors and wireless baby monitors, and are not changed due to the combination mode of the monitoring end and the control end.
The size shall be as small as possible: the small baby monitor (monitoring end and control end) is more convenient to install and carry in the family.
Low power display: the baby monitor, especially the monitoring terminal, must work continuously for a long time. Once the product is low in power, it cannot remind parents to charge it in time. When the power continues to be consumed until it is exhausted, the control terminal will be unable to continue to receive any signal.
Voice trigger prompt: Voice trigger means that once the monitoring terminal detects the noise caused by the abnormal behavior of infants or children, it will be displayed at the control terminal through the noise prompt lamp.
The transmission signal frequency can be adjusted: the monitoring end of the baby monitor provides audio and video digital signals to the control end by transmitting wireless signals. If the transmission frequency of the monitoring end is not selected properly, it will produce electromagnetic interference with other household appliances, digital equipment, etc., which will affect the normal use of the product. Therefore, it is necessary to select a baby monitor that allows users to adjust the frequency of the transmitted signal at the monitoring end.
Adjustable volume: a friendly baby monitor will provide a volume selection knob or button at the control end. When parents are in an environment with loud background sound, they can hear the activity sound of babies and children by turning up the volume; When it is late at night or in a quiet environment, the low volume will not affect the normal rest of the people around you when you are answering normally.
VOX function: VOX is the abbreviation of sound activation start. The monitor with VOX function is in standby mode under normal conditions, and the screen and horn stop working, thus reducing the energy consumption of the product; Once it is detected that the monitored object has an abnormal sound exceeding the set standard, it will immediately flash its alarm lamp at the control terminal or directly light up the screen, and simultaneously play the audio and video information sent by the monitoring terminal.
Digital signals and analog signals: baby monitors using digital signals, such as Baohushen baby monitors, will have better transmission efficiency and provide users with clearer sound and picture quality; Moreover, digital signals can be encrypted to prevent being intercepted and interpreted by other receivers, effectively protecting users' family privacy; The electromagnetic signal interference of digital signal will be lower than that of analog signal, so as not to affect the normal work of other household appliances and equipment.
Monitoring end extension: The baby monitor with a friendly user experience should allow users to use one control end to manage the activities of several monitoring ends at the same time, especially in some families with multiple children. This good scalability not only reduces the trouble of carrying multiple control ends at the same time, but also reduces the objective additional expenses for these families.
Temperature display: some products will have the function of realizing the current indoor temperature, and even can set a critical value. Once the room temperature exceeds or falls below the critical value, an alarm signal will be sent. This is a very considerate function for temperature sensitive newborn children or sick children.
Intercom function: The high-end baby monitor allows parents to have a direct conversation with the baby (child) at one end of the monitoring end through the control end, so that children who are alone can provide psychological comfort. If children have any temporary needs or words, they can be known without bothering the guardian to run to the child.
Signal range: theoretically, the signal sent by the monitoring terminal can be received by the remote control terminal, which is more convenient for users to use the baby monitor flexibly. Now more and more families live in large family rooms, even multi-storey villas, and the baby monitor with strong signal receiving ability provides these families with a more convenient way of use. Parents no longer need to set the room beside the children in order to see and hear their children's every move. They can even take the control terminal to go out for a short walk!
Power supply mode: The baby monitor with built-in battery can automatically switch to the battery power supply mode when the external AC power supply is suddenly stopped, so that the user will not be affected to continue to monitor the child in the power failure environment.
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