寒冬栽培的西红柿在低温、弱光下生长,极易形成黄化、徒长、细弱的植株,果实小而空,甚至不结果。因此,保温增光对产量影响极大。靠煤火炉加温的温室,可通过添火和盖草帘(苫)保温。日光温室除应准备草帘(苫)外,还应准备3～5层牛皮纸或棉被,以备防寒保温定植初期,室温宜高些,白天应保持在22～23℃,夜间在18～20℃。缓苗后要通过防风降温,使室温白天保持20～22℃,夜间15～16℃进入坐果期天气已冷,应以保温防寒为主,室温 Winter tomatoes grown in low temperature, low light growth, easily formed yellow, leggy, thin plants, fruit small and empty, not even the result. Therefore, insulation and lighting have a great impact on output. By the coal stove to heat the greenhouse, can be added through the fire and covered straw curtain (苫) insulation. Daylight greenhouses should be prepared in addition to the straw curtain (苫), but also should be prepared 3 to 5 layers of kraft paper or quilts to prepare for cold insulation planting early, room temperature should be higher, daytime should be maintained at 22 ~ 23 ℃, night at 18 ~ 20 ℃. Huanmiao to wind through the cooling, the room temperature during the day to maintain 20 ~ 22 ℃, night 15 ~ 16 ℃ into the fruitsetting has been cold, should be mainly cold insulation, room temperature