Effects of Silicon on Photosynthetic Characteristics of Maize (Zea mays L.) on Alluvial Soil

Table 6

Effects of silicon on intercellular CO₂ concentration (𝐶_𝑖) in leaves of maize.

Growth stages	Intercellular CO2 concentration (𝐶𝑖) (𝜇mo1·mol^−1)
	T1	T2	T3	T4	T5
Big trumpet stage	180.16±1.13^a	174.77±2.29^ab	169.81±1.42^b	156.59±1.67^c	155.62±1.96^c
Silking stage	154.40±2.31^a	153.23±2.25^a	143.916±1.36^b	132.50±2.12^c	133.62±2.03^c
Grain filling stage	143.73±1.81^a	140.29±1.38^a	133.65±2.27^b	123.70±1.58^c	122.52±2.06^c
Milk stage	145.30±1.16^a	143.96±2.00^a	137.58±1.06^b	126.66±1.79^c	125.73±1.18^c

Means (±SD) labeled with different letters within each column are significantly different (𝑃<0.05) by Duncan’s test; 𝑛=10.