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选品种一是选杂交第一代优势种质组合,适宜本地区种植的品种;二是选结实率高,行数多、行粒多、籽粒重、棒心细、秃尖少、出粒率高的品种组合;三是选生育期在95~1 00d抗灾稳产性好的中熟品种;四是结合本地区种植习惯,因地制宜,优选玉米品种;五是选种时要注意假冒伪劣和虫蛀品种。选播期夏天玉米播种期要选择适时播种。如果播种过早,抽穗扬花
The first selection of hybrid varieties is the first generation of hybrid germplasm selection, suitable for planting varieties in the region; the second choice of seed setting rate, the number of lines, line more grain, heavy grain, thin stems, bald little, high rate of grain The third is to choose the growth period of 95 ~ 100d good stability and good disaster-resistant mid-maturity varieties; Fourth, with the region’s planting habits, according to local conditions, the preferred corn varieties; five is the time of selection should pay attention to counterfeit and moth species . Selection of summer corn sowing time to choose a timely sowing. If sowing too early, heading and flowering