Do Majiayue seedlings use plastic bags to prevent freezing?

Majiayue seedlings are covered with plastic bags to prevent freezing. According to relevant data, the plastic bags of Majiayue seedlings are preferably white or light-colored, and 8- 10 round holes with a diameter of about 0.5cm are evenly punched around the plastic bags (which is beneficial to the seedlings to breathe and prevent the bags from being blown by the wind). The starting and ending time of bagging is not limited by weather conditions, and the operation period can be appropriately extended according to the specific situation, starting after the sap stops moving. The anti-freezing principle of covering plastic film is to reduce the transmission of cold and hot energy and form a small greenhouse, which is both warm and anti-freezing.