随着杂交紧凑型玉米品种的推广,玉米种植密度增加,个体间生长不平衡,空秆株增多,已成为玉米高产栽培的制约因子。因此,提高玉米群体整齐度,是实现玉米高产的关键技术措施之一。一、合理密植适宜的密度为:早、中熟品种夏播为每亩4500～5000株,晚熟品种夏播为每亩4000～4500株,春播还可适当小些。 With the popularization of hybrid compact maize varieties, the density of maize planting increased, the imbalanced growth among individuals, and the increase of empty stalk strains have become the limiting factors for high-yielding cultivation of maize. Therefore, to improve the uniformity of corn population is one of the key technical measures to achieve high yield of corn. First, the density of appropriate close planting Suitable for: early maturing varieties of summer sown 4500 ~ 5000 per acre, late sowing of summer sowing 4000 ~ 4500 per mu, spring sowing may be appropriate smaller.