图4. 不同生育期水稻叶片叶绿素即时荧光动力学曲线 O、J、I、P分别表示光照后10~15μs、2ms、30ms和0.3~2000ms时的荧光信号,下同
Fig.4. Kinetic curve of chlorophyll fluorescence intensity of leaves of rice at different growth stages O, J, I, P indicate fluorescent signal at 10-15μs, 2ms, 30ms and 0.3-2000ms after illumination, the same below