Circular saws introduced The editor Circular saws The series of products by
single-phase series motor power through the transmission mechanism to drive the
Circular Saw blade sawing operation tools, have a safe and reliable, reasonable
structure, high working efficiency, etc. Suitable for wood, fiber board, plastic
and soft cable and similar materials sawing operations. Structural
characteristics of Carry climbing type shape structure, electric circular saw
mainly composed of motor, reducer, shield, regulating mechanism and blank,
handle, switch, do not plug, circular saw blade, etc. Motor single-phase series
motor, according to the set, and rotor core over the ground between with and
without additional insulation is divided into single insulated electric circular
saw (without additional insulation between stator and ground, is also called â…
tools) and double insulation electric circular saw (, have additional insulation
between rotor and ground, is also called â…¡ tools). Regulating mechanism by the
depth adjustment plate, Angle adjustment plate, fastening nut and base plate and
so on, twist elastic fixation nut can be adjusted base plate Circular Saw circular saw, electric circular saw, electro trephine ZHE JIANG ULITE TOOLS MANUFACTURE CO.,LTD , http://www.ulitepowertool.com
Aoni fish, also known as all-male tilapia, is a descendant of the cross between Oriya tilapia (father) and Nile tilapia (maternal). Its hybrid superiority is very obvious. The male rate is more than 90%, and it has strong adaptability. It can tolerate water temperature of 4°C and temperature of 1°C. It can naturally overwinter in most parts of the south of the Yangtze River. Aoni fish has the advantages of good body and meat quality, mixed food, fast growth, high meat yield, and delicious taste. The fish species about 5 cm in size can weigh about 500 grams in 5 months, which is faster than that of tilapia. % ~ 30%, significant aquaculture benefits. 1. The pond requires that the pond should be east-west and rectangular. The area should be 1,000 square meters to 2,000 square meters, and the depth should be 1.8 meters to 2 meters. It requires sufficient water, good water quality, no pollution, easy access to water and drainage, firm foundation, smooth bottom, less sludge, and good water retention. Before pooling, pool water will be drained, exposed to ponds, debris and excess sludge will be removed, and every 667 square meters will be disinfected with fresh lime of 75kg to 100kg. 7 days to 10 days before stocking, 60 cm to 80 cm depth is filtered with a 60-mesh sieve to filter water, and 300 kg to 400 kg of fermented and decomposed pig manure, cow dung or chicken manure and other organic fertilizers are stacked in the pool. /4 ~ 1/3 of the surface of the water L. lucidum or Hongping to ensure that the fish ponds are rich, palatable natural biological food. 2. The stocking stocking density of fish should be determined according to pond conditions, fish species specifications and management levels. Generally, 1200 to 1500 tail fins weighing 50 grams per 667 square meters or 2000 to 5 centimeters to 8 centimeters in length, and 50 to 60 tails of carp species and 40 grass carp species at the same time -50 tails and 150 to 200 tails. After breeding for a period of time, when the Oini fish grows to more than 100 grams, California salmon or carp seeds of 4 cm to 6 cm per 667 square meters are placed in 50 to 80 tails to feed on the natural breeding fry. When the fish species are stocked, they are soaked with 3% to 5% salt water for 10 minutes to 20 minutes. 3. Feeding the fish species In the beginning of the pond, the plankton in the water was used as food, and a small amount of feed was fed at the same time. After 1 week, the animals were fed normally. Aoni is a vegetal omnivorous fish, which can be fed to wheat, corn, cakes, etc., and can also be fed with compound feed. The main raw materials for compound feeds should be fish meal, soybean meal, peanut bran, corn meal, bran, rice bran, etc. The protein content of feed should reach 25% to 30% at the early stage of the breeding, and the protein content of feed must be reached from the length of the long fish to 300g. More than 35%. Feeding should adhere to the “four set†method and determine the amount of feed based on weather, water temperature, water quality, and fish growth. Before a body weight of 200 grams, the daily dose is 4% to 7% of the body weight of the fish. The particle size of 3 mm pellet feed is used for feeding 3 times a day. More than 200 grams of body weight, the daily feeding amount of 2% to 4% of the body weight of the fish, the particle size of 4 mm to 5 mm pellet feed, fed twice a day. The feed was placed on the food table. The food table was set 2 meters away from the pool. Three fish were set for every 667 square meters, and each fish was fed with “80% fullnessâ€. At the same time as feeding, depending on the quality of water, it is necessary to chase fertilizer in a timely manner. Generally, fertilization is performed once every 10 days or so, and every 100 to 150 kg of fermented manure per 667 square meters is used to keep the water, fertilizer, living, and tenderness of the pool. Cool. 4. During the day-to-day management of the culture, keep the water in tea green and have a transparency of 25 cm to 30 cm. Water quality regulation methods: When the weather is clear, the transparency of the water is more than 30 cm, and the fish activity is normal, the amount can be adjusted by increasing the amount of fertilizer; if the water quality is too fat (less than 25 cm in transparency), the amount of fertilizer should be reduced and new water or appropriate amount should be added. Change the water. During the hot season, we must pay special attention to the changes in water quality, increase the number of water injections and the amount of water injection, and generally change the water once every 10 days, and change the water pool 15% to 20% each time. If the color of the water becomes dark and the odor changes, the water should be changed immediately. The water in the pool should be drained 1/3 to 1/2, and then the new water should be injected. Every half a month, every 667 square meters of lime water 10 kg ~ 15 kg of water Quanchiposa 1, in order to improve water quality, control of pool water pH changes. In the late morning of the breeding period, fish floating heads often occur. The aerator should be started on a regular basis and should be turned on for 1 hour to 2 hours before dawn and at noon. Large amounts of fish, weather changes, low air pressure, and severe floating heads require extended boot time. Adhere to the morning and evening patrol ponds, timely remove bait and dirt, maintain environmental hygiene, and strengthen fish disease control. Every cubic meter of water body per month uses 1 g of bleaching powder to spill water once every 1 day; every 20 days, use allicin, fish and other medicines and other drugs and baits (according to the instructions) to feed 1 course of treatment, each treatment course is 3 days ~ 5 days, can effectively prevent fish disease.