论文部分内容阅读
冬春季节,塑料大棚内良好的光照条件直接影响大棚蔬菜的生长发育、产量和品质。在此,介绍5种增加棚内光照的措施:1.改进大棚结构有条件的最好使用镀锌钢管大棚,棚膜最好使用无滴膜,普通膜则以聚乙烯膜为好。另外,对建材和墙进行涂白处理,能增加反射光和延长使用年限;
In winter and spring, the good light conditions in plastic greenhouse directly affect the growth and development, yield and quality of greenhouse vegetables. Here, five kinds of measures to increase the light inside the shed are introduced: 1. It is best to use the galvanized steel pipe greenhouse to improve the structure of the greenhouse. The drip film should be used preferably for the shedding film and the polyethylene film for the common film. In addition, white coating of building materials and walls can increase the reflected light and extend the useful life;