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塑料大棚内的光照条件直接影响蔬菜的生长、产量和品质。增加棚内光照，是大棚蔬菜生产的重要措施。我县菜农改善大棚内光照条件的办法是：１．改进大棚结构，改变搭架方法 改竹竿和竹片架膜为镀锌钢管大棚，棚面用８号铁丝架膜，减少遮光。调节大棚方位、棚面角度、棚宽。以
The light conditions inside the plastic greenhouse directly affect the growth, yield and quality of vegetables. Increase shed light, is an important measure of greenhouse vegetable production. My county vegetable farmers to improve the light conditions within the greenhouse conditions are: 1. Improve the structure of greenhouses, change the method of change to change bamboo and bamboo film for the galvanized steel pipe greenhouse shed with 8 wire frame film, to reduce shading. Adjust the greenhouse position, shed angle, shed wide. To