LEAF CONDUCTANCE OF 4 GLASSHOUSE VEGETABLE CROPS AS AFFECTED BY AIR HUMIDITY

被引：50

作者：

BAKKER, JC

机构：

[1] Glasshouse Crops Research Station, 2670 AA Naaldwijk

来源：

AGRICULTURAL AND FOREST METEOROLOGY | 1991年 / 55卷 / 1-2期

关键词：

D O I：

10.1016/0168-1923(91)90020-Q

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Porometer measurements were conducted on eggplant, cucumber, sweet pepper and tomato in a glasshouse during day and night conditions at different levels of air vapour pressure deficit. The response of leaf conductance was described as an empirical non-linear function of vapour pressure deficit at leaf surface (D0) and solar radiation. Leaf conductance at night clearly responded to D0. Highest conductance was observed with tomato and cucumber. It is argued that effects of humidity on cuticular conductance may contribute to the increased leaf conductance at low D0 but also that stomata respond to D0 at night. If both day and night measurements are combined into one model, the relative response of leaf conductance to vapour pressure deficits is equal for the four species.

引用

页码：23 / 36

页数：14

共 35 条

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