FIELD ENCLOSURE APPARATUS FOR MEASURING CROP PHOTOSYNTHESIS

被引：5

作者：

LEACH, JE

机构：

[1] Physics Department, Rothamsted Experimental Station, Harpenden, Hertfordshire

来源：

ANNALS OF APPLIED BIOLOGY | 1979年 / 92卷 / 01期

关键词：

D O I：

10.1111/j.1744-7348.1979.tb02965.x

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The field enclosure is a transparent box covering a soil area of 1.5 m2. It is a semi‐closed system in which concentrations of water vapour and carbon dioxide are maintained constant: the required rate of input of carbon dioxide being a measure of the photosynthesis rate, and the rate of condensation of water, on cooling coils, a measure of transpiration. The air within the enclosure is circulated rapidly by fans to decrease concentration gradients, and under steady radiation inputs the air temperature is controlled to ±0.5 °C. Both photosynthesis and transpiration rates are corrected for air exchange with the surroundings, as measured through the injection of the inert gas, nitrous oxide. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：125 / 132

页数：8

共 13 条

[1]

Catsky J., 1971, PLANT PHOTOSYNTHETIC, P49

[2] IMPORTANCE OF AERATION IN PROVIDING RIGHT CONDITIONS FOR PLANT GROWTH [J].