STUDIES ON SOIL AND WATER CONSERVATION EFFECTS OF DIFFERENT SITE PREPARATION OF PINUS MASSONIANA ENGINEERING YOUNG PLANTATION A STUDY ON EFFECTS OF SOIL AND WATER LOSSES FOR SEVERAL SILVICULTURAL MEASURES IN YOUNG PLANTATION OF CHINESE FIR Cultivation trial of Michelia hedyosperma The Effect of Fertilization on the Growth of Young Plantation of Chinese Fir Clone Two Years’Growth Response to Fertilization in Young Cunninghamia lanceolata, Pinus elloittii, and EucaIyptus urophylla Plantation Fertilizing Effectiveness and Gain Sustainability of Pinus massoniana Young Plantation Analysis on Growth Response to Fertilization in Young Cunninghamia lanceolata Plantation Study on Stem Management Techniques for Young Plantation of Robinia pseudoacacia cl.‘Zhaiguan’ Establishment of High Efficiency System in Wheat Haploid from Wheat×Maize RESEARCHES ON BIOMASS AND NUTRIENT ACCUMULATION OF UNDERSTORY IN THE SECOND GENERATION OF YOUNG CHINESE FIR PLANTATION I.BIoMASS DYNAMICS OF UNDERSTORY Effects of Nitrogen Addition on Chemical Composition of Soil Organic Carbon and Soil Microbial Community in a Young Ginkgo biloba Plantation STUDY ON THE SITE CONDITIONS SUITABLE FOR YOUNG PLANTATION OF FRAXINUS MANDSHURICA Assessment of Salt Resistance and Physiology Basis of Seed and Seedling of Ceratoides Factors Influencing the Production of Chinese Yam (Dioscorea batatas Decne. ) Early growth performance of 15 indigenous broadleaved tree species in Leizhou Peninsula The Seasonal Rhythm and Growth of the Young Plantation of a Tropical Tree Species,Paramichelia baillonii Provenance Test on Young Plantation of Eucalyptus camaldulensis Comparison of carbon storage in juvenile monoculture and mixed plantation stands of three common broadleaved tree species in subtropical China Soil,Water and Nutrient Loss in Young Plantation of the Inter-Cropped Tea Oil (Camellia oleifera) with Different Crops STUDY ON THE CYCLE OF N、P、K IN CHINESE FIR YOUNG PLANTATION ECOSYSTEM AND ITS SIMULATION