利用大棚进行保护地蔬菜生产,在深冬早春时间,放风的时间较短,基本上是在密闭情况下进行的,每当阳光的照射较强时,棚内的二氧化碳经常处于亏缺状态。这时,西葫芦会出现落花落果或瓜条生长慢等问题,产量上不去。此时,必须对棚内蔬菜追施二氧化碳气体。据实验,把西葫芦棚内二氧化碳含量追施到1000～1600ppm最为适合。因此,需做好气体二氧化碳的施肥工作:一、施二氧化碳肥的时间和方法大体时间在拉开草帘后半小时 The use of greenhouses to protect the production of vegetables in the early winter early spring time, the wind is a relatively short time, basically in a closed situation, whenever the strong sunlight, shed shedding of carbon dioxide often in deficit. At this time, there will be Zucchini plum blossom or slow growth and other issues, yield does not increase. At this point, greenhouse gases must be chased by the greenhouse. According to the experiment, it is most suitable for the content of carbon dioxide in the shed of zucchini to be chased to 1000 ~ 1600ppm. Therefore, the need to do a good job of gas carbon dioxide fertilization: First, the time and method of applying carbon dioxide Fertilizer roughly half an hour after opening the straw curtain