Variation of Wood Qualities along Tree Height and Growth and Correlation Analysis of Multiple-traits in Poplar Hybrid GENETIC EFFECT OF 4NQO AND COMBINED WITH ~(137)Csγ-RAY TREATMENT ON SOYBEAN STUDY ON THE ENDOGENOUS INHIBITORS IN MASSON PINE(PINUS MASSONIANA LAMB.) CUTTINGS Linkage analysis of water use among industrial sectors in the middle reaches of the Heihe River Basin, China Effects of the Age of the Ortet on Oxidize-Resistant Physiology of Young Forest of Eucalyptus grandis×E.urophylla The Effect of Age and Basal-cut Shapes of Cutting on Rooting of Larix leptolepis STUDIES ON THE NUCLEAR POLYHEDROSIS VIRUS OF THE POPLAR LOOPER APOCHEIMA CINERARIUS Ⅵ. STORAGE EFFECT TEST ON THE VIRULENCE OF ACINPV THE AGE EFFECT OF CUTTING PROPAGATION OF PICEA KORAIENSIS AND ITS PHYSIOLOGICAL MECHANISM Effects of summer fallow in Guanzhong irrigation area EFFECTS OF ION BEAM IMPLANTATION ON POLLEN GERMINATION AND POLLEN TUBE GROWTH OF Cedrus deodara Survival and Juvenile Growth of Populus ×euramericana (Dode) Guineir cv.‘Neva’ Cuttings from Stem and Branch of Different Parent Shoots and Planting Spaces