论文部分内容阅读
大棚栽培由于限制了棚内外气体交流，往往使棚内二氧化碳浓度显著偏低，会严重制约叶片的光合作用。怎样增加大棚内的二氧化碳？生产上除了在保证温度的前提下进行通风换气。使用二氧化碳发生器以外，还可采用以下两种投资小而实用的方法。自然发酸法在适时通过换气、增施有机
Greenhouse cultivation due to restrictions on shed exchange of gas outside, often to shed a significant low concentration of carbon dioxide, will seriously restrict the photosynthesis of leaves. How to increase the carbon dioxide in the greenhouse? Production in addition to the premise of ensuring ventilation temperature ventilation. In addition to using a carbon dioxide generator, there are two ways to invest in small and practical investments. Natural acid method in a timely manner through the ventilation, increase organic