不同目数防虫网对大棚内温湿度的影响

Effects of Different Mesh Insect-proof Nets on Temperature and Humidity in Greenhouse

为研究不同目数防虫网在蔬菜生产上的应用效果,选择用25、40目2种密度的防虫网覆盖6 m宽大棚四周,分别与无防虫网覆盖的大棚内温度、相对湿度进行比较分析。结果显示,覆盖25目防虫网大棚温湿度变化与无防虫网覆盖相差较小,覆盖40目防虫网的大棚内相对湿度最多上升11.2%。25目防虫网对大棚内环境的影响较小,同时隔离烟粉虱的效果也较好。

In order to study the application effects of different mesh insect-proof nets on vegetable production, we covered 25 and 40 mesh insect-proof nets around the six-meter-wide greenhouses, and analyzed and compared the temperature and relative humidity in the greenhouses with those of the greenhouse uncovering insect-proof net （the control treatment）. The results showed that, the temperature and relative humidity of covering 25 mesh insect-proof nets had no significant difference with those of the control treatment, and the relative humidity in the greenhouse covered with 40 mesh insect- proof net increased by 11.2% than that of the control treatment. In general, 25 mesh insect-proof net had smaller effects on the inside environment of greenhouse, and it had better effects on isolating Bemisia tabaci.