1．调整大棚方向及棚顶角度：棚向以南北延长为宜。棚顶高度要设计合适，在不影响棚顶排水的前提下，角度小一些有利于受光。2．设置反光幕：利用聚脂镀铝膜做反光幕将射入温室后部光反射到育苗床上。具体做法是先在中柱南侧或后墙、山墙的最高点横拉一细铁丝，把幅宽2米的聚脂 1. Adjust the direction of the greenhouse and the roof angle: Shed to the north-south extension is appropriate. The height of the roof should be properly designed, and the angle should be smaller for the light without affecting the roof drainage. 2. Set the reflective screen: the use of aluminum foil polyester reflective screen will be made into the greenhouse after the light reflected to the nursery bed. The specific approach is first in the south column or the back wall, the highest point of gables pull a thin wire, the width of 2 meters polyester