Effects of Ventilation in Canopy on the Microenvironment and Metabolism of Tomato Seedlings

摘要：

The effects of forced ventilation on the growth of tomato seedlings and on the microenvironment of the seedling canopy were assessed. There were small differences during the night, but striking differences during daytime. Forced ventilation significantly improved the temperature and relative humidity of the canopy, approaching those in greenhouses. In addition, forced ventilation markedly increased the CO2 concentration in the canopy and the net photosynthetic rate, stomatal conductance, and transpiration rate of seedlings. A wind speed of 1.0 m sec in the canopy yielded better results than a wind speed of 0.5 m sec1, resulting in a 2-fold increase in temperature, a 2-fold decrease in relative humidity, a 1.7-fold increase in the CO2 concentration in the canopy and a 2.2-fold increase in the net photosynthetic rate of seedlings.

关键词： tomato forced ventilation in canopy microenvironment

作者: Hui Xu Jianjia Pi Rui Wang Tianlai Li

作者单位: College of Horticulture, Shenyang Agricultural University

会议类型: 国际会议

会议名称: The 2nd Conference on Horticulture Science and Technology(第二届园艺科学与技术学术会议 CHST 2010)

会议地点: 北京

会议语种:英文

页码: 66-69

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）