In 1987 and 1988, the relation between photosynthetic rate and chlorophyll content in the leaves of Chinese jujube were studied with infrared CO2 analyser etc.

• 作者采用红外CO_2气体分析仪等,研究了枣树(Zizyphus jujuba Mill)叶片的光合速率与叶绿素含量间的关系。