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A Study on the Model for Estimation Winter Wheat Yield Using Spectral Data of Wheat Field The Potential Evapotranspiration (PE) Index for Vegetation and Vegetation-Climatic Classification (III)——An Introduction of Main Methods and PEP Program Eco-economic Period Threshold for Controlling Weeds in Summer Soybeans in Beijing Region The Statistical Analysis Between Winter Steppe Grass Yield in Tiansan North Slope and Meteorologic Conditions A Correlative Analysis Between Spectral Reflectance and Yield of Grassland on Xilingol,Inner Mongilia Study on simulated Acid Precipitation Effects on Growth and Yield of Agricultural Crops Analysis of Ecotypes and their Geographical Distribution of Wild Soybean (G. soja) in the World Structural Characteristics of Thicker-culms in the High-yield Wheat Cultivars Membrane Lipids and Their Fatty Acid Composition in Nostoc flagelliforme Cells Photosynthetic Characteristics of Two Superhigh-yield Hybrid Rice Antifreeze Proteins and Their Role in Plant Antifreeze Physiology Isolation of High Molecular Weight DNA from Plant Nuclei Distribution of Trans zeatin, GA7/4, (+)ABA and IAA in Tobacco Egg Cells Before and After Fertilization: Immunogold Electron Microscopic Observations Study on a Species of Thinnfeldia from Liuzhi of Guizhou Province, with Remarks on Thinnfeldia Ettingshausen in China Overexpression of petH Gene of Cyanobacterium synechococcus sp. PCC 7002 in Escherichia coll and Purification of the Expressed Product Establishment of an Index to Appraise Cold-resistant Breeding for Citrus in Early Stage Distribution and Organization of AA Genome- specific and Tandemly Repetitive Sequences in Chinese Common Wild Rice and Cultivated Rice Peroxidation Damage of Oxygen Free Radicals Induced by Cadmium to Plant Immuno-gold Localization of IAA in the Leaf Cells of Vicia faba Effects of Doubled CO2 Concentration on the Content of Photosynthetic Pigments and PS II Functions of Jointing and Grouting in Setaria italica Actin is a Constituent of the Nuclear Matrix and Chromosome Scaffold in Physarum poly cephalum Localization of Heat Shock Protein of Low Molecular Weight by Electromicroscopic Immunogold-Labelling Effect of Cold Hardening on SOD and Glutathion Reductase Activities and on the Contents of the Reduced Form of Glutathion and Ascorbic Acid in Rice and Cucumber Seedlings Effect of Cold-Hardening on Thylakoid Membrane Lipids and Proteins of Spring Wheat and Winter Wheat Laticifer Ultrastructural and Immunocytochemical Studies of Papain in Carica papaya Studies on rDNA ITS1 Regions of Soybean and Its Wild Relatives Change of Peroxidase Activity in Wheat Seedlings Induced by Magnetic field and ITS Response Under Dehydration Condition A New Petrified Wood from Taiyuan Formation Xuzhou Coal Field Jiangsu Province Cytological Studies on the Early Phase of Somatic Embryogenesis in Petiole Explants of Wild Celery Effect of Magnetic Field on Symbiotic Nitrogen Fixation of Soybean Nodules Electron Microscopic Cytochemical Study of Cyclic Adenosine Monophosphate Phosphodiesterase Activity During Gold Acclimation of Wheat Seedlings Studies on Essential Oil trom Zanthoxylum avicennae, (Lam.) DC. and Its Antimildew Active The Variation and Evolution of Karyotype in Diploid Wild Cottons The Response of Photosynthesis and Quantum Yield to low Temperature and High Light in Leaves of Rice Seedlings A New Understanding of the Bohaidinioid Dinoflagellates Study on the Superoxide Dismutase of Soybean Seeds from Different Species in Subgenus Studies on Microtubule Cold Stability in Relation to Plant Cold Hardiness Relationship between the Hydroxylation capacity of Digitalis lanata Plants and Cell Culture Comparative Studies on Water Relations and Xeromorphic Structures of Some Plant Species in the Middle Part of the Desert Zone in China Fluorescence Banding in Several Species of Plant Genetic Structure of Natural Populations of Wild Soybean (Glycine soja) in Beijing Region DETERMINING VEGETATION COVER BASED ON FIELD DATA AND MULTI-SCALE REMOTELY SENSED DATA MOLECULAR ADAPTATION THROUGH DIVERSITY OF RETROTRANSPOSONS AND TRANSCRIPTIONAL FACTORS IN POPULATIONS OF WILD SOYBEAN (GLYCINE SOJA) COMPARATIVE STUDY OF DROUGHT TOLERANCE AND TOLERANCE MECHANISMS IN WILD AND CULTIVATED DICHONDRA REPENS EFFECT OF ROOT EXCISION ON COMPETITIVE ABILITY AND YIELD OF WINTER WHEAT LATE-GROWTH PHOTOSYNTHETIC CHARACTERISTICS AND GRAIN YIELD OF DIFFERENT WHEAT EVOLUTIONARY MATERIALS FFECTS OF MAIZE INTERCROPPING WITH DIFFERENT GENOTYPES ON LEAF SENESCENCE AND GRAIN YIELD AND QUALITY EVALUATION OF GENETIC DIVERSITY BY SSR MARKERS FOR NATURAL POPULATIONS OF WILD SOYBEAN (GLYCINE SOJA) GROWING IN THE REGION OF BEIJING, CHINA TERRESTRIAL ECOSYSTEM PRODUCTIVITY AND CARRYING CAPACITY IN NORTHEAST CHINA ANALYSIS OF PROTEIN RESPONSE TO MECHANICAL WOUNDING IN LEAVES OF BRASSICA NAPUSCV. WESTAR RESPONSE OF PHOTOSYNTHESIS, GROWTH AND YIELD OF FIELD-GROWN WINTER WHEAT TO OZON EEXPOSURE EFFECTS OF LONG-TERM FERTILIZATION ON VERTICAL DISTRIBUTION OF MICROORGANISMS IN WHEAT FIELD SOIL Inter-annual change of vegetation productivity and its driving factors in the Liaohe Delta, northeastern China Effects of simulated sulfur-rich, nitric-rich and mixed acid rain on the physiology, growth and yield of rape (Brassica napus) Spatio-temporal variation of vegetation phenology in the Northern Tibetan Plateau as detected by MODIS remote sensing Nitrogen supply mitigates the effects of elevated [O₃] on photosynthesis and yield in wheat Ecological significance of fruit heteromorphism in the annual ephemeral Senecio subdentatus Overyielding of fine root biomass as increasing plant species richness in subtropical forests in central southern China Effects of cold stratification and dry storage at room temperature on seed germination of eight desert species from the Hexi Corridor of China Effects of mechanical damage of leaves on volatile organic compounds and chlorophyll fluorescence parameters in seedlings of Cinnamomum camphora Effects of phenological change on ecosystem productivity of temperate deciduous broadleaved forests in North America Response of plant biofuel hybrid Pennisetum to NaCl stress and its salinity threshold Variation of ozone concentration of winter wheat field and mechanistic analysis of its possible effect on wheat yield in Northwest-Shandong Plain of China Relationships between species diversity and C, N and P ecological stoichiometry in plant communities of sub-alpine meadow An overview of research progress on responses of grassland ecosystems to global warming based on infrared heating experiments Effects of a winter wildfire on plant community structure and forage quality in subalpine grassland of western Sichuan, China Effects of phosphorus fertilizer on root morphology, physiological characteristics and yield in peanut (Arachis hypogaea) Effects of different soil textures on the growth and distribution of root system and yield in peanut How a winter wildfire affect plant community in subalpine grassland of western Sichuan, China？ Estimating canopy photosynthetic parameters in maize field based on multi-spectral remote sensing Responses of leaf unfolding and flowering to climate change in 12 tropical evergreen broadleaf tree species in Jianfengling, Hainan Island Effects of tillage and nitrogen addition rate on nitrogen metabolism, grain yield and protein content in wheat in lime concretion black soil region Short-term effects of a winter wildfire on diversity and intensity of soil microbial function in the subalpine grassland of western Sichuan, China Exogenous polyamines alleviating salt stress on peanuts (Arachis hypogaea) grown in pots Effects of calcium fertilizer on yield, quality and related enzyme activities of peanut in acidic soil Ecological thresholds: Concept, methods and research outlooks Responses of photosynthesis and growth to weak light regime in four legume species Mechanisms underlying the effects of fall dormancy on the cold acclimation and winter hard- iness of Medicago sativa Respiration rates of stems at different heights and their sensitivity to temperature in two broad-leaved trees in Beijing Breeding and Salt Resistance Evaluation of BADH Transgenic Alfalfa Cultivar Shanmu 2