First, cold vegetables and cold protection measures: 1, using electric hotbed, brewed hotbed nursery. Warming before emergence, after the emergence of temperature control, encountered freezing cold weather, warming the seedbed to prevent frostbite seedlings. 2, strengthen the hardening seedlings, nurturing strong seedlings. After Qi Miao, pay attention to water control, temperature control, dehumidification, sunny ventilation, strengthen hardening seedlings, and enhance seedlings resistance to cold and disease resistance. 3, enhance lighting, cover the cover. In case of rainy weather and cold weather, artificial lighting may be appropriately enhanced to increase the temperature of the shed. After the small shed is covered with a film at night, the mulch may be covered with straw and other coverings. 4, in the shed soil trenches, seedbeds spread dry fine soil, suction surface moisture, reduce the humidity within the greenhouse, can reduce the freezing of vegetable seedlings. 5. In case of snow days, in addition to covering the film in advance, it is necessary to pay attention to the reinforcement of the greenhouses, especially the bamboo and wood structures with poor pressure capacity. On both sides of the greenhouse, additional rods or sheds can be added to the columns, and the snow can be cleared in time. The pressure in the sheds prevents the snow from overwhelming or the wind from damaging the shed. At the same time, the sun can be irradiated as much as possible into the shed after the snow to increase the shed temperature. Second, Daejeon vegetable cold and frost protection measures: 1, timely drainage ditch to prevent accumulation of water. 2, timely cover film, reduce frost damage. Winter vegetables such as lettuce, celery, garland chrysanthemum, spinach and other fast-growing leaf vegetables usually encounter slightly higher temperatures, fast growth, plant young and cold resistance, vulnerable to freezing damage, before the advent of snow and ice days, it should be timely film, enhance protection . 3, timely prevention, reduce losses. After freezing vegetables are susceptible to disease, generally after the disaster, such as lettuce and other leafy vegetables should be sprayed with carbendazim, thiophanate and other fungicides to prevent vegetables from feeling sick. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Notebook Color Doppler Ultrasound Machine Notebook Color Doppler Ultrasound Machine,Heart Color Doppler,Ultrasound Machine For Cardiac,Color Doppler Ultrasound Machine Mianyang United Ultrasound Electronics Co., Ltd , https://www.uniultrasonic.com