Leaf Humidity Characteristics and Its Influencing Factors of Cucumber at Different Growth Stages in Solar Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Leaf Humidity Characteristics and Its Influencing Factors of Cucumber at Different Growth Stages in Solar Greenhouse

Author(s):: CUI Hai1; GUO Wenzhong2; (1.Department of Biological Engineering,Yinchuan Energy Institute,Yongning,Ningxia 750105;2.National Research Center of Intelligent Equipment for Agriculture,Beijing 100097)

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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Last Update: 2017-04-18