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Effects of Different Treatments on Soil Microenvironment and Germination\nRate of Gleditsia sinensis Afforested by Direct Seeding Research Advances on the Physiological and Ecological Characteristics and Cultivation Techniques of Direct Seeding Rice in the Middle-Lower Yangtze Area EFFECTS OF TEMPERATURE AND SUNLIGHT CONDITIONS ON THE YIELD OF DIRECT SEEDING RICEIN DIFFERENT GROWTH STAGES Effects of Shrub-grass on Direct Seeding of Cyclobalanopsis glauca and Malania oleifera in Rocky Desertification Mountains in Southwest Guangxi EFFECT OF DIFFERENT MODES OF FERTILIZER N APPLICATION ON NITROGEN ABSORPTION AND YIELD OF DIRECT SEEDING RICE Study on Introduction Cultivation of Aucklandia lappa Deone Effect of Non-flooded Straw-mulching Cultivation on Grain Yield and Quality of Direct-seeding Rice Effects of Nitrogen Fertilizer and Planting Density on Canopy Structure and Population Characteristic of Rapeseed with Direct Seeding Treatment Effects of cropping patterns on photosynthesis characteristics of summer maize and its utilization of solar and heat resources. Physiological mechanisms of strong competition of weedy rice at seedling stage