8Martin P N Gent. Canopy light interception, gas exchange and biomass in reduced height isolines of winter wheat. Crops Science, 1995,35 : 1636-1642.
9Conocono E A, Egdane J A , Setter T L. Estimation of cancopy photosynthesis in rice by means of daffy increases in led carbohydrate concentration. Crop Sci, 1998,38:987-995.
10Stone P J, Sertensen I B, Jamieson P D. Effect of soil temperature on phonology, Canopy development, bilmass and yield of maize in a cool-temperate climate. Field Crops Research, 1999,63 : 169-178.
