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以黄瓜为试材,设土壤相对含水量50%~60%(SW1)和土壤相对含水量75%~90%(SW2)为处理,在生长季连续观测日光温室黄瓜叶片湿度及环境因子,以揭示日光温室黄瓜叶片湿度变化特征及影响因子。结果表明:在不同天气下,日光温室黄瓜叶片湿度表现为增-降-增的变化趋势,00:00—08:00逐渐增加,08:00—19:00骤降于一个低的水平,19:00—00:00快速增加至较高水平的变化趋势,且SW1和SW2处理的黄瓜叶片湿度均表现为阴天>晴天。由统计分析得出,黄瓜叶片湿度与二氧化碳浓度、光合有效辐射、相对湿度、饱和水汽压差呈正相关,与光照总辐射、温度、土壤相对含水量呈负相关。
Taking cucumber as test material, the relative humidity of the soil was set at 50% ~ 60% (SW1) and the soil relative moisture content was 75% ~ 90% (SW2). The humidity and environmental factors Reveal the Change of Cucumber Leaf Humidity in Sunlight Greenhouse and Its Affecting Factors. The results showed that under different weather conditions, the humidity of cucumber leaves in solar greenhouse showed a trend of increasing, decreasing, increasing, increasing gradually from 00:00 to 08:00, dropping to a low level from 08:00 to 19:00, : 00-00: 00 rapidly increased to a higher level of trend, and cucumber leaf SW1 and SW2 humidity showed cloudy> sunny day. According to the statistical analysis, the humidity of cucumber leaves was positively correlated with carbon dioxide concentration, photosynthetically active radiation, relative humidity and saturated water vapor pressure, and negatively correlated with total irradiance, temperature and soil relative water content.