耐密型玉米是指相对于平展型品种在一定条件下,通过提高种植密度,能够获得较高产量的一类玉米品种。由于耐密品种一般都具有株型收敛,上部叶片与茎秆夹角较小的特点,通常也被称之为紧凑型玉米。耐密型玉米的出现和发展是玉米生产发展到一定阶段、达到一 Tolerant maize is a kind of maize variety that can achieve higher yield under certain conditions relative to the flat type by increasing planting density. As the close-tolerance varieties generally have plant type convergence, the upper part of the angle between the leaves and stems smaller, often also known as compact corn. The emergence and development of dense-tolerant corn is a certain stage of development of corn production, reaching one