Diurnal variations of half-hourly canopy stomatal conductance (<i>G<sub>sc</sub></i>) calculated by the big-leaf (<i>G<sub>sc1</sub></i>) and dual-leaf models (<i>G<sub>sc2</sub></i>), and measured <i>G<sub>sc</sub></i> (<i>G<sub>scm</sub></i>) inverted by the S-W model, respectively for four typical clear-sky days in different growth stages of maize in 2009.

<p>Leaf area index (<i>LAI</i>) was 0.16, 2.62, 5.38 and 2.99, on (a) May 22, (b) June 23, (c) July 27, and (d) September 17, respectively.</p>