Winter is extremely cold. How can pepper seedlings survive the winter smoothly?

In winter, pepper seedlings are suddenly hit by a cold wave and the temperature suddenly drops, making the seedlings vulnerable to the East China Sea. If the temperature slowly drops, the saplings will be less likely to freeze. The temperature is not too low, but the low temperature lasts for a long time, especially when it is accompanied by low temperature and plum rain, seedlings are also prone to Donghai. The severity of seedlings crossing the East China Sea is related to the rate of temperature rise after low temperatures. The temperature rises slowly, and the seedlings thaw slowly, making it easy for them to regain their vitality. If heated and thawed too quickly, the seedling tissue is prone to dehydration and drying, resulting in dead seedlings. The use of artificial seedling raising methods such as improved seedling raising methods, electric hotbeds, and factory seedling raising is the fundamental measure to solve the problem of frozen seedlings.

Enhance the cold tolerance of the seedlings and prevent the seedlings from taking off the covering as much as possible before the cold snap arrives, so that the seedlings can shine more and accept movement. During periods of rain, snow and low temperatures, take advantage of possible weather conditions to clear gaps and open curtains to allow pepper seedlings to bathe in sunlight. When it suddenly clears up after the rain or snow stops, cover the seedlings with a few curtains around noon to prevent them from withering. The bed soil has high humidity, and the seedlings are susceptible to the influence of the East China Sea. Water the motherboard before the cold snap arrives. If the bed soil is too wet, spread hay and wood to absorb moisture. The overall principle is to train the mother-in-law. It is necessary to avoid the occurrence of East China Sea and prevent the occurrence of diseases. In terms of temperature management, the optimal growth temperature for pepper seedlings is 25 to 28°C. The temperature in the warehouse usually exceeds 28°C and requires reasonable ventilation.

When planting pepper seedlings in winter, from December every year to February next year, the temperature outside the shed is extremely low, so ventilation needs to be reduced, and the lid of the shed should be opened late to maintain the indoor temperature of the shed. After the beginning of spring, the temperature gradually rises. Chulian should open the cover early and ventilate properly during the day. In terms of humidity management, it is generally necessary to control the moisture so that the pepper seedlings can survive the winter smoothly. If the soil is too dry, even watering will need to be done "little and often." Choose to water on sunny days for several consecutive days. Generally speaking, water lightly every 4-5 days on sunny days in early winter. Try to avoid or reduce swelling in cold winter, early spring, and damp weather. The water should be better adjusted 7-10 days before planting. When your finger is inserted into the soil 2-3 cm deep, the soil must feel dry before watering.

But controlling watering does not mean not watering. If the seedlings show signs of weakening growth or wilting due to lack of water, they should be watered appropriately. After pouring mild well water for watering during lunch time, let the soil cool for 1 to 2 hours and then ventilate properly, which can make the seedlings evaporate without water droplets. If you find that the air humidity in the warehouse is too high, water it and control proper ventilation. After transplanting the saplings, if the humidity is too high, you can combine cultivation and weeding, spray dry grass and allow ventilation for 1-2 hours.