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光合作用是植物产量形成的基本过程,提高光合速率是农业增产的有效途径。在强光下,C_4植物的光合作用强度为 C_3植物的2倍左右。一般 CO_2补偿点低的,往往表现了低光呼吸和高光合速率。根据 C_3植物、C_4植物 CO_2补偿点的差异,1969年国外有人创造了一种把 C_3植物和 C_4植物培养在同一个透光密闭系统内的筛选方法,利用 C_4植物光合固定 CO_2,使此系统
Photosynthesis is the basic process of plant yield formation, increasing photosynthetic rate is an effective way to increase agricultural output. Under bright light, the photosynthesis intensity of C_4 plants was about 2 times that of C_3 plants. Low CO 2 compensation points usually show low photorespiration and high photosynthetic rate. According to the differences of CO2 compensation points between C_3 plants and C_4 plants, a screening method was developed abroad in 1969 to cultivate C_3 plants and C_4 plants in the same light-tight closed system. C_4 plants were photosynthetically fixed with CO_2 to make this system