Integrated Effects of Reducing N Application and Cutting-Roots with K Top-Dressing on N, K Uptake, and Yield, Quality of Flue-Cured Tobacco Relationship Between Dry Matter Per Plant in First Cutting and the Yield-Related Traits in Twelve Alfalfa Varieties Introduced Overseas Characteristics of Dry Matter Production and Accumulation and Super-High Yield of Japonica Super Rice in South China Effects of “San-Ding” Cultivation Method on Yield Formation and Physiological Characteristics of Double Cropping Super Rice Effects of Planting Density and Soil Moisture on Flag Leaf Photosynthetic Characteristics and Dry Matter Accumulation and Distribution in Wheat Effects of Drought Stress on Physiological Characteristics and Dry Matter Production in Maize Silking Stage Effects of Different Paddy Field Drainage Degrees and Panicle Nitrogen Fertilizer Managements on Photosynthetic Productivity and Nitrogen Utilization of Rice under Triangle-Planted System of Rice Intensification Effect of Ordered Transplanting and Optimized Broadcasting on Super High Yield and Photosynthetic Productivity and Exploration of Rice Super High Yield Model Effects of Different Cultivation Patterns on Photosynthetic Characteristics and Water Use Efficiency in Dryland Spring Maize Dynamic Changes of Endogenous Hormones Content and Dry Matter Accumulation of Pods and Kernels in Different Varieties (Lines) of Peanut (Arachis hypogaea L.) Sugar Metabolism and its Relationship with Fiber Strength Affected by Waterlogging during Flowering and Bolling Stage in Cotton Water Utilization and Matter Production in Winter Wheat under Soil-Coated Ultrathin Plastic-Film Mulching and Irrigation Management  Dynamic change of dry matter accumulation and ralationship between artemisinin and nitrogen, phosphorus, potassium in Artomisia annua Effect of nitrogen fertilizer on dry matter accumulation and yield in wheat/maize/soybean intercropping systems Effect of cropland ecological conditions on soil nutrient and humic acid characteristics of gray desert soil Mathematical model of wheat straw decomposition rate in farmland with different levels of fertilization A research of Matter-element Model of comprehensive evaluation on fragile eco-environment Effects of crop residues incorporation and N-fertilizer utilization on the matter production of summer maize Studies on relationship between wheat morphological character as well as grain contents and wheat midge resistance Contribution of organic residue cycling to the soil organic matter in red paddy system Effects of plant polysaccharide compound agents on the photosynthetic characteristics and dry matter of soybean. Effects of long-term double-rice and green manure rotation on rice yield and soil organic matter in paddy field Interactive effects of low phosphorus and drought stress on dry matter accumulation and phosphorus efficiency of soybean plants Labile soil organic carbon distribution on influenced by vegetation types along an elevation gradient in west Sichuan, China Effect of Phosphorus Application Rate on Dry Matter Accumulation and Phosphorus Utilization Efficiency in Oil Flax EFFECTS OF COVERING WITH PLASTIC FILM ON DECOMPOSITION OF ORGANIC MATERIALS AND CHARACTERISTICS OF SOIL ORGANIC MATTER Effects of phosphorus application on dry matter production and phosphorus uptake in wheat (Triticum aestivum L.) A New Hybrid Variety Carrot Used a s Dried Product‘Tianhong 2’ Studies on Changes of Field - Vegetable Ecosystem under Long-term FixedFertilizer Experiment Photosynthetic Characteristics , Dry Matter Distribution Pattern and Their Effects on Eggplant Yield in Different Canopy Structures Effects of Different Mixed Organic Matter Application on the CO2 Concentration in Greenhouse and the Physiological Effects of Tomato Plants Diurnal Variation of Airborne Particulate Matter in 3 Typical Recreation Forests in West Mountain of Beijing Area in Spring Spatial Para Allocation of a Small Watershed Protection Forest System Effect of Mechanized Transplanting with High Hill Density and Single Seedling per Hill on Growth and Grain Yield in Super Rice Effects of Wheat Straw Returning Patterns on Characteristics of Dry Matter Accumulation, Distribution and Yield of Rotation Maize Studies on the Flowering Chracteristics an dHarvest Time of Pyrehrum cinerariifolium Effect of Irrigation on Plant Growth and Physiological Characteristics of Calligonum caput-medusae Seedlings A Study on Ontogeny of Curcuma longa L. Influences of Potamogeton crispus L.on Phosphorus Status in Lake Sediments Studies on Accumulation and Distribution of Dry Matter,Nitrogen,Phosphorus,and Potassium in Rhizome Lotus(Nelumbo nucifera Gaertn) Dynamic change of dry matter accumulation and ralationship between artemisinin and nitrogen, phosphorus, potassium in Artomisia annua Characteristics of dry matter production and N, P, K and S absorption for different garlic cultivars Changes of Growth, Development and Photosynthesis Indicators of Jerusalem artichoke Dry Matter and Nitrogen Accumulation and Partition of Different Summer Corn Varieties at the Later Growth Stage Major Viruses and Effect of Major Virus Diseases and Virus-Eliminating Meristem Culture on Sweetpotato Yield and Quality in China Response of Root Growth to Nutrient Level in Alfalfa Seedling Stage Absorption and allocation of nitrogen, phosphorus, potassium in Prunella vulgaris and their relationship to dry matter accumulation Difference of Transpiration, Fresh Matter Accumulation and Fruit Yield for Potted Tomato Under Moisture Content of Medium