CUI Hai,GUO Wenzhong.Leaf Humidity Characteristics and Its Influencing Factors of Cucumber at Different Growth Stages in Solar Greenhouse[J].Northern Horticulture,2017,41(07):52-55.[doi:10.11937/bfyy.201707012]
不同生育期黄瓜叶片湿度变化特征及其影响因子
- Title:
- Leaf Humidity Characteristics and Its Influencing Factors of Cucumber at Different Growth Stages in Solar Greenhouse
- Keywords:
- leaf humidity; growth period; cucumber; solar greenhouse
- 文献标志码:
- A
- 摘要:
- 以黄瓜为试材，在生长季连续观测土壤相对含水量50%~60%（SW1）、75%~90%（SW2）处理下日光温室黄瓜植株叶片湿度及环境因子，以揭示日光温室作物叶片湿度变化特征及影响因子。结果表明：不同生育期黄瓜叶片湿度差异显著，表现为生长中期＞生长初期＞生长末期，SW2＞SW1；不同生育期SW1和SW2处理下的黄瓜叶片湿度变化趋势一致，在生长初中期叶片湿度为夜间（00:00—08:00）增加，白天（08:00—20:00）骤降，傍晚（20:00—00:00）回升的趋势，在生长末期处于一个较低水平状态。通过主成分回归分析得出，第1主成分F1光照、温度、饱和水汽压和第2主成分F2土壤水热条件的累计贡献率大于65%，综合F1和F2得出不同生育期黄瓜植株叶片湿度主要受温室内光照、温度、湿度及土壤水热条件影响。
- Abstract:
- Cucumber was used as material,continuously observed leaves moisture of cucumber and environmental factors in solar greenhouse during the growing season with treatment as soil moisture content of 50%-60%(SW1) and soil moisture content of 75%-90%(SW2).To reveal cucumber leaves humidity variation and influencing factors in solar greenhouse.The results showed that leaves humidity of cucumber showed a significantly different at different growth stages.It showed as medium growth stage > early growth stage > late growth stage,SW2>SW1.At the early and middle growth stage,leaves humidity of cucumber showed as increased in night-decreased in daytime-increased in night trend of SW1 and SW2.At the late growth stage,leaf humidity was a low level state.The results of principal component analysis showed that the cumulative contribution rate was more than 65% of the first principal component F1 (light,temperature and saturation vapor pressure) and the second principal component F2 (soil water and heat conditions).Comprehensive analysis,light,temperature,humidity,soil water and heat conditions were the main influencing factors of leaf humidity of cucumber at different stage in the solar greenhouse.
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备注/Memo
第一作者简介：崔海（1980-），女，硕士，讲师，现主要从事设施栽培及环境调控等研究工作。E-mail:cuihai54321@163.com.基金项目：银川能源学院校级科研资助项目（2013-KY-Z-08）。