烟草苗期的温、肥、水管理烟草苗期根系小又弱，抗逆性差。从播种到烟苗拉十字期必须保持和提高苗床内温度，增加有效积温，达到早出苗、出齐苗。出芮期苗床最适温度为２５－２８℃，育苗床土要保持湿润，含水分一般在７５％左右。保持底墒足就不必浇水，如需浇水要选无风... Tobacco seedling temperature, fertilizer, water management Tobacco seedling root small and weak, poor resistance. From sowing to tobacco pull the cross must maintain and increase the temperature inside the seedbed, increase effective accumulated temperature, to early emergence, a Qi Miao. The optimum temperature of seedbed out of Rui 25-28 ℃, nursery bed soil to keep moist, moisture content is generally about 75%. To keep the footsteps sufficient, you do not need watering, if you want to watering, you should choose no wind ...