冬季怎样提高大棚韭菜产量一、设置风障，适时扣棚。立冬后韭菜地上部分开始枯萎，这时应在韭菜畦的北面设置风障，以增强韭菜的防寒保温能力。在封冻前搭好棚架，盖上透明塑料薄膜，夜间加盖草苫。白天太阳出来后揭开草苫，并用小棍敲打棚顶，震落水珠，以增加塑料薄膜的... How to improve the greenhouse production of leeks in winter First, set the wind barrier, timely deduction shed. After the beginning of winter leeks began to withered on the ground, then the northern chive should be set in the wind barrier to enhance the cold chilly insulation capacity. Put a scaffolding in the frozen before, covered with transparent plastic film, stamped grass 苫 at night. After the sun came out in the day, it opened the grass, and beat the roof with a stick to shake off the drops of water to increase the plastic film.