Seed characteristics of Tiannong No.10 maize: the middle-early maturity spring maize group in northeast China is from emergence to maturity 125.3 days, 20 19 years is 2.6 days earlier than that of the control Xinxin 1, and 2020 is earlier than that of the control Jidan 2710.6 days. Seedling leaf sheath is light purple, leaves are green, leaf margin is green, anther is yellow, glume is green. The plant type is semi-compact, the plant height is 298 cm, the ear position is 105 cm, the ear is short and conical, the ear length is 17.9 cm, the number of rows per ear is16-18 rows, the ear axis is white, the grain is yellow and hard, and the weight of 100 grains is 36.0g.. Inoculation identification, susceptible to leaf blight, resistance to head smut, susceptible to gray spot, susceptible to stem rot, moderately resistant to ear rot. Grain bulk density is 774g/L, crude protein content is 8.26%, crude fat content is 3.68%, crude starch content is 76.62%, and lysine content is 0.24%.