Studies on Seed Development and Embryogenesis in Liriodendron chinense (Hemsl.) Sarg The Effects of Seeding Rate, Nitrogen Fertilizer and Harvest Time on the Yield and Quality of Oat-Pea Mixture Effect of Row Spacing and Seeding Rate on Seed Yield and Yield Components of Bromus inermis Leyss. Effects of seeding rate and fertilizer on photosynthetic characteristics and yield of spring Fagopyrum esculentum Effect of seeding rate on growth and nutrient accumulation of Chinese milk vetch Effects of seeding rate and nitrogen fertilization rate on physiological traits of winter wheat after anthesis in a field with plastic mulched rides and unmulched furrows.