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3、增强植株的生理活动。农作物产量在相当大程度上决定于光合能力,而光合能力又与进行光合作用的(?)管——叶面积和叶绿素含量有关。关于这三个生理指标的资料,列于表9和表10。
3, enhance the physiological activity of plants. Crop yield is largely determined by photosynthetic capacity, which in turn is related to photosynthesis (?) Tube - leaf area and chlorophyll content. Information on these three physiological indicators are shown in Tables 9 and 10.