In winter, when keeping earthworms outdoors, it's essential to adjust the temperature based on the size of the area and local conditions. Various heating methods can be applied to ensure that the lowest temperature inside the trampoline stays between 10°C and 15°C. This helps boost the growth and reproduction rate of the earthworms, making the process more efficient.
Some farmers use a single layer of plastic film over the trampoline. While this may raise the temperature by 8–10°C on sunny days, it doesn’t provide consistent warmth during cold mornings. In such cases, the trampoline might only be 1–2°C warmer than the outside, which isn’t enough to maintain stable conditions for earthworms. Therefore, a single layer of film isn't sufficient for effective temperature control.
To address this, two improved methods can be used for better insulation and warmth:
1. Double-layered film with a straw curtain in between: This method is simple and cost-effective. It provides significantly better insulation compared to a single layer of film, raising the temperature by about 6°C. Additionally, it allows for better temperature regulation in March, when the trampoline’s temperature might otherwise drop below the flat cover film. This technique ensures more stable conditions for the earthworms throughout the colder months.
2. Bamboo frame plastic greenhouse: Using a bamboo frame covered with plastic offers good insulation at a low cost. The average daily temperature inside can reach 10°C, and over a 150-day cold period, this results in a total temperature increase of 1,500°C. This is equivalent to 75 days of 20°C, meaning the earthworms effectively gain an extra two months of growth time. As a result, they grow faster and reproduce earlier, laying a strong foundation for high yields throughout the year.
Inside the plastic greenhouse, the north and west sides should be covered with straw curtains to block cold winds. A straw cage should be placed in the center of the trampoline for ventilation, followed by a thin layer of plastic. In areas with extremely low temperatures, two layers of plastic can be used along with a straw curtain for added insulation. These adjustments help maintain optimal conditions for earthworms even in harsh winter climates.
Blood Pressure Meter
Electronic smart digital Upper arm and Wrist Blood Pressure Monitor automatic.
we are manufacturer of Blood pressure monitor for more than 12 years, we can accept OEM/ODM as for your requirements.
More closer to our peoples' heart, so the result of measurement will be more accurate.
Main Feautures For Electronic Sphygmomanometer Automatic BP Machine Digital Upper Arm Blood Pressure Monitor:
· Measurement method: oscillometric method
· Display screen: LCE big digital display shows high pressure / low pressure / pulse
· Blood pressure classification: WHO sphygmomanometer classification indicates blood pressure health
· Intelligent pressurization: automatic pressurization and decompression, IHB heart rate detection
· Year/month/day time display
· 2*90sets of measurement results memory for two people; the average reading of the last 3 measurements for data comparison
· One button measuremment,automatic turn on-off for convenient operation
· Blood pressure value unit Kpa and mmHg for conversion (boot default unit is mmHg)
Comfortable cuff included
· voice broadcast function is optional,any OEM demand available
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Shenzhen Urion Technology Co., Ltd. , https://www.urionhealth.com