光合速率随二氧化碳浓度增加而增加,同时“随二氧化碳浓度增高,光合适温也会升高”.高浓度二氧化碳,不但可明显提高光合速率与光合适温,而且还会对光呼吸产生抑制作用,降低呼吸强度,减少呼吸消耗,
从而提高了呼吸作用与光合作用平衡点的温度,温室作物在较高温度条件下有较多的同化物质积累”
.此题理解为其它条件不变,光合适温会提高,而温度主要影响暗反应.
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