1. After 4 to 5 days of sowing, the seedlings can be emerged. After emergence, the seedlings should be inoculated in batches in time, and the seedlings grow to 2 to 3 leaves during the seedlings. After 20 days of sowing, the radish roots of the radish began to expand. At this time, the mud was pressed against the film break to prevent the film from being lifted up.
2. The growth temperature of radish is above 12 °C. The management in the early stage of growth should be based on heat preservation, appropriately increase the temperature inside the shed, promote the growth of rosette leaves, and cover the cold weather in the case of strong cold air. When the temperature rises in the late growth period, it should be ventilated and cooled in time. During the daytime, the temperature in the shed will be controlled at 20 °C ~ 25 °C, and the temperature in the shed will be controlled at 15 °C at night. The shed film and the greenhouse film will be gradually removed depending on the weather. After mid-April, the shed film can be removed and cultivated in the open field.
3. Generally, no watering is required during the growth of radish, and watering is only appropriate when the gully soil is whitish. In the succulent root expansion period, the radish needs a large amount of water, and it is better to use drip irrigation. If ditch irrigation is used, it should be carried out at noon on sunny days, half-ditch water should be filled, and drained 2 hours after filling.
4. The first top dressing is carried out 30 days after the sowing, and the second top dressing is carried out in about 45 days. When topdressing, 25 kg of compound fertilizer can be used to fill the root of the liquid fertilizer with a concentration of 0.5% per acre. If the soil moisture is large, it can be applied at a distance of 10 cm from the root of the radish.
5. Pest control. The pests are mainly aphids and cabbage caterpillars. The diseases are mainly downy mildew and black rot, and timely control of pests and diseases.
6. Harvest at the right time. When the fleshy root diameter is more than 5 cm and weighs about 0.5 kg, it can be harvested in batches. When harvesting, leave the petiole 3 to 5 cm, cut it off after cleaning, and do not clean it if transported over long distances.
Base Seals are an important component used to seal machines and equipment. They are usually used to prevent liquid or gas leaks and protect machines and equipment from dust, pollutants, and other external elements. Base Seals mainly include rubber seals, oil seals, mechanical seals, O-rings, U-rings, V-rings, X-rings, and other types.
Rubber seals are a type of seal widely used in various machines and equipment. They are usually made of rubber materials and have characteristics such as wear resistance, corrosion resistance, high temperature resistance, and low temperature resistance. Rubber seals are mainly used to seal liquids or gases in machinery and equipment, such as automotive engines, water pumps, pipelines, fans, refrigeration equipment, etc.
Oil seal is a type of seal specifically used to seal lubricating oil. They are usually made of rubber and metal materials and have characteristics such as wear resistance, corrosion resistance, and high temperature resistance. Oil seals are mainly used in equipment such as automotive engines, industrial machinery, water pumps, and hydraulic systems to prevent lubricant leakage.
Mechanical seals are advanced seals used to seal machines and equipment. They are usually made of metal and ceramic materials and have characteristics such as wear resistance, corrosion resistance, high temperature resistance, and low temperature resistance. Mechanical seals are mainly used in high-speed rotating equipment, such as centrifugal pumps, compressors, fans, centrifugal separators, etc.
O-ring is a common sealing element, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. O-ring is mainly used in fields such as automobiles, machinery, and electronic equipment.
A U-shaped ring is a sealing element with a U-shaped cross-section, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. U-rings are mainly used in hydraulic systems, pneumatic systems, automotive braking systems, and other fields.
A V-ring is a sealing element with a V-shaped cross-section, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. V-rings are mainly used in fields such as automobiles, industrial machinery, and hydraulic systems.
7. X-shaped ring
An X-ring is a sealing element with an X-shaped cross-section, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. The X-ring is mainly used in hydraulic systems, pneumatic systems, automotive braking systems, and other fields.
X Ring,O Ring,Ptfe Gasket,Back Up Rings
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