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在保证温度和加强肥水管理的条件下,如何最大限度地利用光能,是棚（室）冬春生产取得高产量、高效益的关键。实践经验证明:利用镀铝聚酯膜反光幕对蔬菜生产有四大好处:（一）可增加光照强度。据观测,中午11时距反光幕3m（米）以内的地平面,比不挂反光幕的棚（室）平均增加光照0.7万LX（勒克斯）,
How to maximize the use of light energy under the conditions of ensuring the temperature and strengthening the management of fertilizer and water is the key to achieve high yield and high benefit in winter and spring production in greenhouse. Practical experience shows that: the use of aluminized polyester film reflective curtain on vegetable production has four major advantages: (A) can increase the light intensity. According to the observation, at 11 o’clock noon, the ground level within 3m (meters) of the reflective screen is increased by 7,000 LX (lux) on average compared with that of the booth without the reflective screen,