Effects of Nitrogen and Irrigation on the Photosynthetic Characteristics at Filling Stage in Rotation of Winter Wheat and Summer Maize
Abstract：The field experiments were performed using split-plot design to investigate the effects of different nitrogen and irrigation levels on the leaf area index and photosynthetic characteristics at filling stage in rotation of winter wheat and summer maize. The results showed that: the highest values of net photosynthetic rate(Pn) and transpiration rate(Tr) were observed in treatment W1500N210 and the highest leaf area index(LAI) and leaf water use efficiency(LWUE) were obtained in treatment Wlso0N270 at the filling stage of winter wheat; the maximal Tr and Pn were got in treatment Wls00N270 and W1500N210 at the filling stage of summer maize, respectively. The significant effects of irrigation, nitrogen and their interaction were found in LAI, Tr, Pn and LWUE of winter wheat and summer maize. LAI, Tr, Pn and LWUE of winter wheat and summer maize increased with the increase of irrigation and nitrogen, which did not significantly increase when the nitrogen contents exceeded 210 kg/hm2.
Keywords：rotationfilling stage leaf area indexphotosynthetic characteristics
Publication Date：2012-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 18-21 )