一、播种准备时期（５月下旬至６月上旬）选用中晚熟品种，播前精选后晾晒２～３天，测定千粒重，作好发芽试验，并根据发芽率确定播种量。对未包衣的种子要用药剂拌种，防治地下害虫，或灰飞虱及玉米黑腐病。二、播种至出苗期（６月中旬至下旬）６月１５～２０日播种，播量６? First, the sowing preparation period (late May to early June) selection of late-maturing varieties, pre-sowing selected 2 ~ 3 days after drying, determination of 1000-grain weight, good germination test, and determine the sowing rate according to the germination rate. To uncoated seed dressing with pesticides, prevention and control of underground pests, or Laodelphax striatellus and corn black rot. Second, sowing to the emergence of seedlings (mid-June to late) June 15 to 20 sowing, sowing 6?