The Application of Marginal Utility and the Development of High-yield,High-quality and High-benefit Agriculture Utilization of Plant Potentialities to Enhance the Bio-efficiency of Phosphorus in Soil Patterns and Tactics for Agro-economic Development in ECOTONE--A Case Study from Panxi Region in Sichuan Province Influence Factors to Agricultural Technical Innovation in China The probe of the Ten-years Eco-agricultural Practice in Jilin Province Nutrient Contents in Paulownia and Soil and Their Effects on Witches‘Broom Position and Functions of Anaerobic Digestion in Eco-agriculture Corn Starch Gel and Plant Tissue Culture I. Effects of Corn Starch Gel Medium on Differentiation and Growth of Malus Zumi and M26 Potential Productivity of Light and Heat Resources and Its Utilization in Winter Wheat Field Features of Rural Garden Economy and Tactics for Its Development A Report on Eco-agricultural Development in Xining City Establishing Forest Environmental Resource Industry to Promote the Sustainable Development of Forestry Application of Farming System Approach to Researches on Sustainable Farming System Development Combination of Subsistence with Development:Rising of the Agroforestry Sustainable Agriculture is an Effective Way of Improving Rural Economy and Protecting Ecological Balance The Influences of CO2 Concentration Doubling on Growth and Development,Yield Formation and Germination Percentage of Winter Wheat Population Supporting Capacity of Land(PSCL) in Dabie Mountainous Region in Hubei Province Effects of Cultivation Techniques for High-yield and High-benefit Growing of Foxtail Millet A Review of Certain Problems in Intercropping Research An Approach Confirming The Representative Regions of an Agroecological Experimental Station--A Case Study from Changwu Agroecological Exprimental station Discussion of Problems in Agro-eco-system Assessment Limitation Factors to the Yield of Winter Wheat Growing on Non-irrigated Land in Heilonggang Area Modelling the Biomass Dynamics of Alpine Meadow Effects of System Factors on Productivity of Key Agricultural Elements Development and Prospect of Land Resource Economics in China Energy Flow in the Agroecosystem of Farming-Livestock-Fruit Study on Rational Land Use for Comprehensive Agro-development--A Case Study from Jixian County,Shanxi Province The Effects of Microgeomorphology on Soil Formation and Agricultural Utilization in Modern Yellow River Delta Material-flow Structure and Nitrogen-recycling Efficiency of Kangji Ecological Farm Microclimate in the Downland Region of Taihang Mountains and the Construction of Artifical Vegetation Ecological Functions of Diversified Farmland landscape Evaluation of the Functions of a Compound Agroecosystem The Obstacles in the Current Agricultural Development Macroscopic Features of Nitrogen Transformation and Cycling in the Agroecosystem in China and It‘s Implications to Ecological Agriculture The Quantitative Features of A Typical Agroecosystem and the Strategies for its Sustainable Development in the High Production Area in Taihang Piedmont Effects of Applying Molybdenum to Soybean and Intercropped Maize on the Increase of Nitiogen and Yield The Allocation Structure of an Eco-agricultural Resource-saving Model Correlative Analysis of the Relationship of the Comprehensive Exploitation the Rural Energy Resources and the Development of the Rural Economy in Huabei Plain Genetic divergence and analysis of the relationships between species of Mosla (Labiatae) Correction of karyotype of diploid Beesia calthifolia and discovery of a tetraploid cytotype Surface features of seeds in Thermopsis (Leguminosae) New synonymies of some species in the Hamamelidaceae New taxa of Impatiens L. (Balsaminaceae) from Zhejiang, China New material of Carex sect. Praelongae from China New taxa of Carex L. (Cyperaceae) from China (II) New taxa of Carex L. (Cyperaceae) from China Taxonomy of the fern genus Leptochilus Kaulf. (Polypodiaceae) Validation of some Chinese species of Ilex L. (Aquifoliaceae) Karyomorphology of four species in Ancylostemon, Briggsiopsis and Lysionotus (Gesneriaceae) Evolution of pollination system and characters of stigmas in Najadales New taxa of Berberis Linn.(Berberidaceae) from China New taxa of the Ranunculaceae from Xizang (Tibet), China Three genera and four species of Cephaloziaceae new to China A new species of the genus Polypodiodes Ching (Polypodiaceae) from China Scirpus monocephalus—A new species of the genus Scirpus Linn. (Cyperaceae) from Anhui, China A new species of Epimedium L. (Berberidaceae) from Hunan, China Two new species of the Begonia L.(Begoniaceae) from China A new species of Mahonia Mutt. (Berberidaceae) from Guangxi, China The identity of the genus Xizangia Hong(Scrophulariaceae) A new species of Helicteres Linn. (Sterculiaceae) Two new species of the genus Dendranthema (DC.) Des Moul. from China Two new species of the Lauraceae from Guangxi, China New plants of the Gesneriaceae from Guangxi of China(Ⅲ) Five newly-recorded species in the genus Nitzschia from China A new species of Pellionia Gaud.(Urticaceae) from Yunnan, China The Restoration of the Genus Cyclocodon ( Campanulaceae) and Its Evidence from Pollen and Seed-coat Two New Species of Compsopogon (Rhodophyta) from Shanxi and Guangxi, China A New Combination of Hamamelidaceae A New Species of the Genus Panicum L.(Poaceae) from Yunnan, China Two New Species of Doronicum Linn. (Compositae) from China A Pair of Vicarious Species of Hippeophyllum: H. sinicum (sp. nov.) from Gansu and H. pumilum from Taiwan A New Species of Bambusa from Guangxi, China A New Species of the Genus Agapetes (Vacciniaceae) from Guangxi, China Two New Species of Saussurea DC.(Compositae) from Xinjiang, China Study on the Fern Genus Polystichum Roth Sect. Lasiopolystichum Daigobo from China Synstemon deserticolus Y. Z. Zhao—A New Species of Brassicaceae from Nei Monggol Notes on Syringa meyeri Schneid. and Its Confused Species New Material of Carex Section Rhomboidales from China (2) A Taxonomic Study of Huperzia Bernh.(s. s.) Sect. Huperzia in China Yinpingmudan, the Wild Relative of the King of Flowers, Paeonia suffruticosa Andrews