用同化箱(室)法测定作物光合作用强度,是当前测定光合作用的手段之一。它是通过测定同化箱(室)进,出口CO_2浓度的变化,计算箱内作物对CO_2的同化量,从而得出光合强度。其基本公式如下: 其中:P——光合强度 F——同化箱(室)内气体流量 c_1、c_2——分别是同化箱(室)进、出口处CO_2浓度 a_t—CO_2体积浓度在不同温度t下,变换 Assimilation box (chamber) method to determine crop photosynthesis intensity, is one of the means of measuring photosynthesis. It is through the determination of the assimilation box (room) import and export of CO 2 concentration changes, the calculation of the assimilation of CO 2 inside the box of the plant, and thus get the photosynthetic intensity. The basic formula is as follows: Among them: P - photosynthesis intensity F - assimilation box (room) gas flow c_1, c_2-- respectively is the assimilation box (room) 进出, exit CO_2 concentration a_t-CO_2 volume concentration at different temperatures t Under, transform