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光合强度也称光合速率、光合率或同化率,它是表示植物光合作用速度和效率的指标。所谓光合作用,是指植物的绿色组织利用日先能,将二氧化碳和水制造成有机物质并释放出氧气的过程,因此,光合强度可以用光合作用中消耗的二氧化碳量、生成的有机物质量或释放的氧气量来表示。所以,光合强度一般以单位叶面积(常用平方分米,即dm~2)在单位时间(常用小时)内所吸收的二氧化碳量(常用毫克,即mg)表示,通常标明的单位为CO_2mg/dm~2·小时。如以
Photosynthetic rate, also known as photosynthetic rate, photosynthetic rate or assimilation rate, it is an indicator of plant photosynthesis speed and efficiency. The so-called photosynthesis, refers to the use of plants in the first day of green tissue, the carbon dioxide and water into organic matter and the release of oxygen from the process, therefore, photosynthesis intensity can be used in photosynthesis carbon dioxide consumption, the amount of organic compounds generated or released The amount of oxygen to represent. Therefore, the photosynthetic intensity is generally expressed in units of leaf area (square root of the commonly used, that is dm ~ 2) in units of time (commonly used hours) the amount of carbon dioxide absorbed (mg commonly used), usually marked unit CO_2mg / dm ~ 2 hours. Such as