Abstract: The seed coating and phosphorus application experiments were done using three tobacco varieties,including K326,Yunyan85 and Honghuadajinyuan.The results showed that the seed coating could not only improve greatly seed germination rate,but also shorten seed germination time.But seed coating treatment had no obvious effects on tobacco biomass and total root length.And tobacco seed coating had nutrients not also increased the accumulation of macro-nutrients,including nitrogen,phosphorus and potassium,in tobacc...