Black and White Ultrasound Scanner "Black and White Ultrasound Scanner" is to emit ultrasonic waves, so that the ultrasonic waves encounter barriers to generate echoes, use the computer to collect these echoes, convert them into corresponding images and display them on the screen, and the images measured by the ultrasonic probe are black and white, so it is called " Black and White Ultrasound Scanner" is also the earliest diagnostic technology adopted by b-ultrasound. Black And White Ultrasound Scanner,Animal Ultrasound Scanner,Palm Veterinary Ultrasound Machine,Animal Veterinary Ultrasound Machine Mianyang United Ultrasound Electronics Co., Ltd , https://www.uniultrasonic.com
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To ensure successful growth of protected peppers, seedlings must be raised under covered conditions from the very beginning. This helps them adapt to the environmental changes after transplanting. If seedlings are grown in open fields, the sudden shift in conditions can negatively impact their growth and increase the risk of disease. When using small or medium greenhouses for seedling production, the width of the greenhouse should be wider than the number of seedlings. For example, if the seedbed is 1.5 meters wide, the greenhouse should be at least 2 meters wide.
Before sowing, seeds should undergo pre-treatment to enhance disease resistance. One method involves soaking seeds in water for 6–8 hours, followed by a 5-minute dip in a 1% copper sulfate solution. After rinsing with clean water, this helps prevent diseases like anthrax and scab. Another option is to soak seeds in water for 4 hours, then place them in a 10% trisodium phosphate solution for 20–30 minutes, or immerse them in a 2% sodium hydroxide solution for 15 minutes. These treatments help inactivate viruses and reduce infection risks. Alternatively, dry seeds can be placed in an oven at 70°C for 72 hours to eliminate pathogens both inside and on the surface of the seeds.
Once properly moistened, the seeds should be kept in a dark, warm environment (25–30°C), turned every 4–5 hours, and washed once or twice daily. Germination typically occurs within 3–5 days.
For seeding, use 40–60 grams of seeds per square meter, which translates to approximately 150 grams per 667 square meters. Water the seedbed thoroughly before sowing, then evenly distribute the sprouted seeds. Cover them with a thin layer (about 1 cm) of medicated soil—mix 8 grams of carbendazim with 15 kg of fine soil. Finally, cover the bed with a plastic sheet to maintain moisture.
During seedling management, keep the daytime temperature between 25–28°C and nighttime temperatures around 18–20°C. The ground temperature should remain at 20°C, allowing the seedlings to emerge within 6–7 days. Once they start to emerge, lower the temperature to 22–25°C during the day and 15–18°C at night. This helps the cotyledons grow thicker and supports root development. If temperatures drop below 15°C during the day or 5°C at night, growth may slow down or stop temporarily.
Keep the seedbed consistently moist. If the soil becomes too dry, sprinkle damp soil over the surface. If it's excessively dry, mist the bed with water and then add a light layer of wood ash to absorb excess moisture. When the seedlings have 1–2 true leaves, they should be thinned out, ensuring no more than 3 true leaves are left. This prevents the formation of flower buds too early. In greenhouse settings, container-grown seedlings are common. Two similarly sized seedlings can be planted 2 cm apart in the same pot.
One week after transplanting, maintain a daytime temperature of 25–30°C and a nighttime temperature of 18–20°C, with a ground temperature around 20°C to promote healthy root development. If the ground temperature drops below 16°C, root growth slows, and below 13°C, growth stops entirely. About 10–15 days before planting, harden off the seedlings by gradually reducing the temperature to 15–20°C during the day and 5–10°C at night. Water only when necessary—keep the soil moist but not waterlogged.