The Growth and Photosynthesis of Poplar Trees in Fast-growing and High-yield Plantations with Subterranean Drip Irrigation EFFECT OF SUCCESSIVE-ROTATION ON PRODUCTIVITY AND BIOMASS OF CHINESE FIR PLANTATION AT FAST GROWING STAGE Determining Optimum Planting Density of Masson Pine Fast-growing and High yielding Plantations for Various Cultivation Objectives The Evaluation and Selection of Fast-Growing Indigenous Broad Leaved Tree Species in South China DENSITY, STORAGE AND DISTRIBUTION OF CARBON IN CHINESE FIR PLANTATION AT FAST GROWING STAGE Simulation of growth dynamics of four plants in the typical steppe of Inner Mongolia in growing season Elite Poplar Varieties Populus deltoides‘Lux’ × (P. deltoides‘Shanhaiguan’× P. simonii)‘Zhaiguan Ⅰ’and P. deltoides ‘Lux’ ×(P. deltoides ‘Shanhaiguan’ × P. simonii)‘Zhaiguan Ⅱ’ A Study on Growth Characteristics of Young Plantations of Some Tree Species of Magnoliaceae Effect of Photosynthetic Pigments,Diurnal Changes of Fluorescence and Ultrastructure in Fast Growing Period of Flue-cured Tobacco to Molybdenum Deficiency A New Poplar Variety Populus deltoides CL.‘Danhong‘