用红外线气体分析仪测定作物的光合速率是目前比较好的方法,但直接在田同测定往往会遇到一些困难。例如,即使是配有蓄电池的手提式红外仪,往往也因电压不稳而影响流量,且仪器往返搬运既不方便又易损坏,尤其是因系非同步测定,气象条件变化大而易影响测定结果。我们摸索出的采用田间气袋取气室内红外仪分 Measuring the photosynthetic rate of crops by infrared gas analyzer is a better method at present, however, it is often difficult to measure the photosynthesis directly. For example, portable infrared analyzers equipped with batteries tend to affect the flow rate due to voltage instability, and the equipment is inconvenient and easily damaged during the transportation back and forth. In particular, it is easy to influence the measurement due to the non-synchronous determination and the large meteorological change result. We explored the use of field air bags to take indoor infrared infrared points