大棚蔬菜补充CO_2后,植株健壮,叶片增大,光合效率高,增产幅度大,据试验,大棚黄瓜从移栽第二天起,连续补充CO_246天,可使大棚内CO_2浓度增加0.04～0.05％,黄瓜叶片上的气孔数显著增加,植株浓绿,提早开花,雌花数和叶腋中结果数也明显增多,增产36％以上,并能提前10天上市,番茄在出苗后的12～15天内和移栽后的40～43天内补充CO_2,使CO_2的浓度保质在0.1％左右,幼苗和植株生长健壮,提早开花结果,提前7～10天上市,增产19％以上,且糖分和有机酸含量均有提高,芹菜、菜豆等蔬菜补充CO_2,也都表现显著增产,现将大棚蔬菜补充CO_2的方法介绍如下: 一、用干冰(固体CO_2)补充CO_2,先在大棚 Greenhouse vegetables supplemented with CO_2, plant robust, leaves increased, photosynthetic efficiency, yield increase, according to the test, the greenhouse cucumber from transplanting the next day, continuous supplemental CO_246 days, can make the greenhouse CO 2 concentration increased 0.04 to 0.05% , The number of stomata on cucumber leaves increased significantly, the plants were dark green and flowering prematurely. The number of female flowers and the number of axils in the leaves also increased significantly, with a yield increase of more than 36% and the ability to be listed 10 days in advance. In 12-15 days after emergence After 40-43 days of transplanting, CO 2 was supplemented to keep the CO 2 concentration at about 0.1%. The seedlings and plants grew robustly and the flowering prematurely occurred. The products were put on the market 7 days to 10 days ahead of schedule and the yield was increased by 19%. The content of sugar and organic acid Have increased, celery, beans and other vegetables supplement CO_2, also showed a significant increase in production, now the greenhouse vegetable supplement CO_2 methods are as follows: First, with dry ice (solid CO_2) added CO_2 first in the greenhouse