论文部分内容阅读
冬季,利用塑料日光温室进行蔬菜生产,保温是一个十分重要的问题。近年来,有经验的菜农常采用以下措施:①前屋面夜间覆盖纸被(用4层牛皮纸做成)和草帘,并在前屋面底角堆一些“稻乱”,第二天早晨揭帘时将“稻乱”扒开。②后墙外培50—80厘米厚的防寒
Winter, the use of plastic solar greenhouse for vegetable production, insulation is a very important issue. In recent years, experienced vegetable growers often adopt the following measures: ① The front roof is covered with paper at night (made of 4 layers of kraft paper) and straw curtains, and some “rice chaos” is stacked at the bottom of the front roof. The curtains are exposed the next morning When the “rice chaos” Pa Zhakai. ② back wall training 50-80 cm thick cold