1. Impact on overwintering crops Wheat: The benefits of snowfall over winter wheat production outweigh the disadvantages. The favorable factors are: First of all, the winter wheat in the overwintering period is covered with snow, which reduces the occurrence of frost damage. Secondly, the decrease in temperature slows down the momentum of wheat growth and helps to improve the structure of the population. During the cold period, some late weak seedlings are killed and the population structure is frozen. More reasonable; Third, low-temperature and heavy snow reduces the population density of overwintering worms, inhibits the spread of diseases, and is beneficial to reducing the diseases and insect pests in the coming year. The unfavorable aspect is that in some areas with heavy rain and snow, if the layer of snow and ice that covers the wheat melts and the temperature is stable below zero for a long time, it may cause freezing damage to wheat. Rapeseed: The main hazards are: First, the snowfall has a long duration, and the snow is too large. The tall and fragile plants of the rape can not withstand the heavy pressure and cause mechanical damage such as broken stalks; second, continuous low-temperature rain and snow, especially freezing rain sometimes occurs. As for the cold damage to rapeseed, the early freeze of rapeseed that has been opened is heavier; Third, the long-term rain and snow process will increase the humidity of the farmland too much, which is not conducive to the formation of strong seedlings. 2. Impact on facility agriculture Heavy snow has the most obvious impact on facility agriculture, especially for greenhouse vegetables. Because the snowfall is too long and the snow is too thick, the greenhouse temperature and light transmittance are reduced, which affects the normal growth of greenhouse vegetables. Due to the continuous low temperature, vegetables in greenhouses and exposed vegetables are frozen. Seedlings used for early spring cultivation are also susceptible to freezing. What is even more serious is the appearance of vegetable greenhouses in most areas, the collapse of edible mushroom sheds, and the collapse of poultry sheds. As the continuous low-temperature rain and snow conditions have increased the difficulty of managing greenhouse vegetables, coupled with the serious loss of greenhouses, the supply of vegetables has been affected. Responses First, we must strengthen the management of facilities, fruits and vegetables. Greenhouse vegetable growers should grasp the insulation management of greenhouses, clean up the snow in facilities, and prevent the collapse of greenhouses. The collapsed greenhouses should be repaired in a timely manner, reinforce the membrane lines, press tightly the skirt membranes, close the windows and doors in time, prevent the wind from lifting the shed film, and avoid the further expansion of the disaster. At the same time, a small shed can be added to the greenhouse, covered with straw, multi-layer film, indoor temperature and water control and other measures to regulate temperature and humidity, and enhance the insulation capacity of the facility. Conditional farmers can use incandescent lamps to fill the seedling sheds, turn on the heating furnace, and increase the temperature and ground temperature in the shed to achieve the purpose of preventing snow and freezing. The second is to grab the piped vegetables and vegetables. The mature vegetables should be promptly brought to market and supplemented with market supply. Priority should be given to planting young seedlings on the field, and once the weather improves, the ground hotline or electric hotline should be used for nursery. In severely damaged sheds, it is advisable to take a film in the hut after snow to change cabbage, lettuce and other lettuces. Third, we must strengthen the management of rapeseeds and wheat fields. Rapeseed and wheat field blocks are snow-resistant and anti-freeze heavy. After the snow, they must assault the ditch and gully, so that the gutters can communicate with each other and the internal and external phases are connected to eliminate the water in the field in time. At present, rapeseed and wheat in the land must be treated with fine snow melting before they can be rooted, covered and preserved, and organic fertilizers such as organic fertilizer and potash fertilizer added to enhance the cold resistance of rape and wheat in fields. , to promote their transformation and upgrading of seedlings. Slimming Mints,Best Weight Control Mints,Slimming Power Gum,Best Slimming Mints Soar Biotech Co.,Ltd , https://www.xylitgum.com