In recent days, unstable temperatures and prolonged cold weather have had a great impact on vegetable growth and nursery. Therefore, vegetable farmers should take active actions and adopt effective technological defense measures to deal with the effects of cold weather on vegetables. Affecting the growth and development of vegetables The effects of low temperature on seedlings are mainly due to lack of light, low ground temperature, slow emergence of vegetables, weak growth, and heavy damping-off; the main impacts on transplanting and colonization are the delay of planting period, prolonged period of seedling growth, and the process of growth and development. The impact is mainly reflected in the weak growth momentum, and the delays in flowering, fruit setting and listing period will be postponed. In the event of severe frost damage, the plants were directly frozen. Defensive and remedial technical measures In early spring, nursery should be prepared for cold protection in advance in accordance with changes in the weather, and films and grasshoppers should be prepared in advance. In the cold weather before the advent of cold weather should be covered with film, take a small shed to keep warm. Seedlings can be sprayed with 0.04% Yunda-120 (Alizarinactone) + 0.3% Potassium Dihydrogen Phosphate, or watered once a day, in order to improve the cold resistance of the seedlings before the sudden cold and cold weather. Obvious effect. When the weather improves, timely top dressing and seedlings are added to strengthen the management of fertilizer and water in the seedling stage and comprehensive prevention and control of pests and diseases. Seedlings should be cultivated at low temperature before colonization. Solanaceous vegetables should be controlled at 22-26°C during sunny days and 5-12 days before planting. Nighttime control should be 8-12°C, and the resistance of the vegetables themselves should be improved through low-temperature hardening. Cold resistance, disease resistance, etc. Transplanting vegetables in early spring should be timely covered with plastic film, take a small shed to keep warm. Pay attention to the weather forecast and spray antifreeze on the leaves before cold freezing damage. The formula is to add 50 grams of urea, potassium dihydrogen phosphate and brown sugar for every 15 kilograms of water. After mixing, spray on the back of the leaves every 5-7 days. Spray 1 time. Prevention of Cold Injury of Vegetables in the Field Before the occurrence of low temperature damage, the soil is cultivated with cultivator, and the depth of soil is 5-10 cm, which can loosen the soil, increase the soil temperature, and protect the roots. In the afternoon before the onset of low-temperature freezing damage, 100-150 kilograms of rice straw per acre was evenly spread over the vegetable pods and vegetables to reduce the freezing damage. Fresh Breaded fish fillet Fish Fillet,Fresh Fish Fillet,Breaded Fish Fillet,Fresh Breaded Fish Fillet Zhoushan Junwei Aquatic Products Co., Ltd. , https://www.junweiaquatic-intl.com