实践表明，CO2；具有促进蔬菜生长的作用。在棚室中适量的补充CO2；，不但可以促进蔬菜生长，增加雌花分化量，而且还可以加大果实的负载量，提高蔬菜的产量和品质。1补充方法①干冰（固体CO2）升华补充法。先在大棚内架设塑料管．每隔一定距离开一个孔．然后将于冰放置于气瓶 Practice shows that CO2; has the role of promoting vegetable growth. The appropriate amount of CO2 in the greenhouse can not only promote the growth of vegetables and increase the differentiation of female flowers, but also increase the load of fruits and increase the yield and quality of vegetables. 1 additional methods ① dry ice (solid CO2) sublimation supplement method. First set up plastic pipe in the greenhouse. Open a hole at regular intervals. Then place it on a cylinder of ice