6Bassman J,Zwier J C.Gas exchange characteristics of Pop-ulus trichocarpa,Populus deltoids and Populus trichocarpa,P.deltoids clone[J].Tree Physiol,1991,8:145-159.
7Berry J A,W J S Donnton.Environmental regulation of photosynthesis[A].Govindjee eds.Photosynthesis[C].New York:Academic press,1982:263-243.
9Mandal K G,Sinha A C.Nutrientmanagementeffects on light in-terception,photosynthesis,growth,dry-matter production and yield of Indian mustard(Brassica juncea)[J].Journal of Agronomy and Crop Science,2004,190(2):119-129.
10Farquhar G D,Shakey T D.Stomatal conductance and photosynthesis[J].Ann Rev Plant Physiol,1982,33:317-345.
