The characteristics and buoyancy regulations of cyanobacterial gas vesicles Research and prospect on physio-ecological properties of ratoon rice yield formation and its key cultivation technology Advancement of Genetic Characteristics for N,P and K Utilization of Rice Population Characteristics of Mistletoe (Viscum coloratum) in Wandashan Mountain Advances in studies on Erigeron breviscapus Analysis of combining ability of photosynthetic characteristics in indica hybrid rice