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随着我国人民生活水平的迅速提高,人们要求四季都能吃到新鲜蔬菜,因此,政府狠抓菜蓝子工程。在我国北方,大力发展塑料大棚等温室,使北方居民在冬季能吃到各种新鲜蔬菜。我国北方冬季寒冷,大棚内气温较低,当温度低于10℃时,作物便不能生长发育了,因此必须及时提高大棚内温度,以确保作物能正常生长发育。北方的冬季,在白天或连绵阴雨天,也常常会使大棚内温度低于10℃,也必须及时增温。目前这种临时性增温,通常采用点燃木炭、电炉子、液化气等,来提高温室
With the rapid improvement of people’s living standard in our country, people are required to eat fresh vegetables in all seasons. Therefore, the government is paying close attention to the project of vegetable basket. In northern China, vigorously develop greenhouses such as plastic greenhouses so that northern residents can eat all kinds of fresh vegetables in winter. In northern China, the winter is cold and the temperature in the greenhouse is low. When the temperature is lower than 10 ℃, the crops can not grow and develop. Therefore, the temperature in the greenhouse must be raised in time to ensure the normal growth and development of crops. Winter in the north, during the day or rainy day, often make the temperature inside the greenhouse is lower than 10 ℃, it must be timely warming. The current temporary warming, burning charcoal, electric stove, liquefied gas, etc., are usually used to raise the greenhouse