一、氯化钠浸种 用0.2％的氯化钠水溶液浸种12小时,捞出后晾干播种,可增强玉米种子在干旱条件下的吸水力,提高出苗率6％～11％,并能促进幼苗生长,增加产量 二、多效唑浸种 用200ppm多效唑水溶液浸种12～14小时,浸后稍晾即可播种,可有效地捉进根系生长,增强气孔阻抗,降低叶面蒸腾,一般可降低株高7～10厘米,果穗长增加8％,穗粒数增加28～43粒,增产7％～15％ First, the sodium chloride soak with 0.2% sodium chloride solution soaking 12 hours, remove and dry sowing, maize seeds can enhance the water absorption under drought conditions, increase the emergence rate of 6% to 11%, and can promote seedlings Growth, increase yield Second, soaking seed soaking with paclobutrazol 200ppm soaking for 12 to 14 hours, slightly soaked after sowing can be seeding, which can effectively capture the root growth, increase stomatal impedance and reduce leaf transpiration, generally reduce plant height 7 ~ 10 cm, ear length increased by 8%, grain number increased 28 ~ 43 grains, an increase of 7% to 15%