Winter fish species, because of low water temperature, tight fish scales, and weak fish activity, the fish body is not easy to be injured during the stocking operation, and the survival rate of the fish species after the pond is high. For stocking fish in winter, the following points should be noted: First, pay attention to pond reform and clear. In the winter season, the small ponds, shallow ponds, dead water ponds and leaking water ponds were reconstructed. The small ponds were changed to big ponds, the shallow ponds were changed to deep water ponds, the dead water ponds were changed to live water ponds, and the leaking water ponds were changed to water ponds. While renovating the pond, clean up the pond and remove excess silt. The thickness of the silt should not exceed 15 cm. Eradicate weeds and raise the height of the pond. Second, pay attention to pond disinfection. Disinfection is generally selected on sunny days. First, dry disinfection: 10 cm of water, 80,100 kg of lime per acre, or 45 kg of bleach containing 30% of available chlorine; second, water disinfection: 1 meter of water, 150 kg of lime per acre, or The bleaching powder containing 30% of available chlorine 12 13 kg, add water-soluble, evenly spilled. Disinfect fish 710 days after disinfection. Third, pay attention to fertilizer. After the pond is disinfected for 57 days, it can be fertilized with water, applying 250,500 kilograms of man or animal dung per acre to fertilize the water quality and increase the amount of food organisms in the water. The new pool should be applied in multiple ways. After fertilization, water should be injected. The fertilizer ponds can be applied with little or no fertilization. Fourth, pay attention to reasonable stocking. Winter fish should be selected for normal appearance, strong physique, rich back muscles, short tail shank, complete scales, smooth surface with mucus, bright eyes, lively beating, slightly larger size (turtle, grass carp, carp 12 About 10 centimetres, about 10 centimetres of salmon, about 6 centimeters of salmon). Fish stocking generally choose between water temperatures of 610 °C, fine weather at noon and afternoon, cloudy and foggy days should not be put. After the fish species are released, they should pay attention to frequent patrol ponds. Once the weather turns cold, the water level should be deepened in a timely manner to avoid a sharp drop in water temperature. Increased water temperature on sunny days can be used to feed some concentrates to promote rapid growth of fingerlings. Fifth, pay attention to early release. The winter solstice to the beginning of the spring is a good season for stocking. At this time, the water quality is stable, the fish body is strong, the scales are tight, and the activity is small. It is convenient for fishing operations and transportation, and it is not easy to be injured. The survival rate of the fish species is high and the weight gain is fast. The fingerlings were soaked in salt water with a concentration of 3% to 4% in front of the pond for 510 minutes to disinfect the fish. 6. Pay attention to the ratio of delivery. Fertilizer ponds should be dominated by plutonium and plutonium, and their polyculture ratios should be: 55% 66%, 15% plutonium, 10% grass carp, 10% plutonium, 10% 15% of plutonium, lotus root, lotus root, etc. Water lean and green fodder should be dominated by grass carp, and the ratio of polyculture with: grass carp 45% 50%, 鲢 20%, 鳙 5% 10%, 鲤 10%, 鲫, 鲂, etc. 5% 10%. Seven, pay attention to strengthening management. First, it is appropriate to feed in the winter. The water temperature is above 8°C on sunny days, and it is fed once a day. The amount of each feeding is 1% 2% of the fish's body weight; the second is to be diligent in observing the water conditions. Fresh water is preferred, water quality is black or brown, water quality is deteriorated, water injection and oxygen increase must be timely, and temperature difference should be prevented when filling water. When the water level drops, new water should be added in time to maintain the water level above 1.8 meters; the third is to create a good wintering environment. Keep quiet around the wintering pond, prohibit vehicles and pedestrians from disturbing, prohibit sewage from entering the pool, and prohibit livestock and poultry from entering the pool; Fourth, prevent fish diseases. During the wintering period, appropriate amounts of quicklime should be regularly applied to prevent fish diseases. The most common fish disease in winter is watery mildew, which can be splashed with 0.04% of salt and 0.04% of baking soda mixture. It can also be splashed with 2 grams of gallnut per cubic meter of water. In addition, we must often clean the table to eliminate weeds and debris.
M-BUS metering data converter is with M-BUS and
USB interface, which is collected with M-BUS meters and meter reading primary
station separately. The communication with M-BUS meters is based on tree
collection. This data concentrator is single non-communication converter, supporting
data transmission and sending reading orders through USB collection. The quantity to collect with the meters(meters data transceiver) is 60pcs and 360pcs.
Function of the M-BUS converter:
Working
voltage:AC220V
Power:10W
Interface: up:USB
down:M-BUS
Quantity:≤60pcs,360pcs
VBUS:high level 39V,low level 23V
BUS
load current:≤200mA
Path
protection:over current,short cut protection,reset automatically when failure deleted; need
man resetting when long-time over current
Status
indicator: power; receiving and sending; over load warning
wiring:0.75mm2~2mm2;wire
resistance≤50Ω
transmission
:1000meters
working
environment:temperature:-30℃~80℃
humidity:≤90
M-Bus Converter,Wireless M-Bus Converter,Wireless Meter Reader,M-Bus Connector,Data Concentrator,Metering Data Converter,Meters Data Transceiver Berggruen Technology Co.,Ltd , https://www.meter-technology.com