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冬春季节,塑料大棚内的光照条件直接影响蔬菜的生长发育,产量和品质。那么,怎样改善大棚蔬菜的光照条件呢? 1.合理搭配种植 在塑料大棚内种植不同品种的蔬菜时,要按照“北高南低”的原则合理配植,尽量减少株间遮光。 2.保持棚膜清洁 棚膜上的水滴,尘物等对棚内光照状况影响很大。据观测,棚膜上附着一层水滴,可使透光率下降20-30％;新薄膜使用2天,10天,
Winter and spring, the light conditions within the plastic greenhouse directly affect the growth and development of vegetables, yield and quality. So, how to improve the light conditions of greenhouses vegetables? 1 with a reasonable planted in plastic shed planting different varieties of vegetables, in accordance with the principle of “North High South low” reasonably planted to minimize the shade between strains. 2. To keep the greenhouse film clean film on the water droplets, dust and other light conditions on the shed a great influence. It is observed that the film attached to a layer of water droplets, can reduce the transmittance of 20-30%; the new film to use 2 days, 10 days,