对普通塑料大棚内加盖中棚、以及用电热线加温条件下 ,棚内冬季的温度动态变化规律进行了详细的测定 结果表明 ,覆盖中棚后 ,棚内白天升温加快 ,夜间保温效果提高 在中棚内夜间使用电热线 ,加温效果较好 试验表明 ,采用大棚内覆盖中棚 ,再辅之以电热线加温 ,是塑料大棚冬季栽培番茄等喜温作物的有效方法 The general plastic greenhouse covered with the shed, and the use of electric hot wire heating conditions, shed temperature dynamics during the winter of a detailed determination results show that after covering the shed, the greenhouse warming during the day to speed up the insulation effect at night to improve In the shed at night using the electric heating line, heating effect is better Experiments show that the use of greenhouses covered in the shed, supplemented by hot wire heating is plastic greenhouse winter cultivation of tomatoes and other thermophilic crops effective method