为了明确不同季节麻地膜覆盖栽培保温特性及对作物生长和产量的影响,分别在冬季、春季和夏季进行不同地膜覆盖白菜对比试验。结果表明:不同季节麻地膜覆盖均能提高土壤温度,增温效果平缓,夏季不会出现膜下高温情况。麻地膜覆盖能够促进白菜出叶速率、增加株高和叶片数、增大叶面 In order to clarify the effects of mulching film mulching cultivation and thermal insulation in different seasons and their effects on crop growth and yield, comparative experiments were conducted on winter mulching, spring and summer respectively. The results showed that: Maize film mulching in different seasons can increase the soil temperature, the warming effect is gentle, the summer under the film does not appear under high temperature. Ma film cover can promote the rate of cabbage leaf, increase plant height and leaf number, increase the foliage