Effect of Irrigation to Winter Wheat on the Radiation Use Efficiency and Yield of Summer Maize in a Double Cropping System

Table 3

PAR capture ratio in the canopy of summer maize (%).

Treatment	Above the 3 spike leaves	The 3 spike leaves	Below the 3 spike leaves
T0	12.8^d	29.4^d	33.6^a
T1	15.1^c	43.7^c	21.4^b
T2	20.6^b	50.2^b	11.4^c
T3	22.0^a	54.3^a	9.1^d

The data was the average values on Aug 20, Aug 27, and Sep 5, 2002; and Aug 24, and Sep 9, 2003, and Aug 19, Aug 20, and Aug 22, 2005. Values followed by a different letter are significantly different at 5% probability level.