夏玉米生长期短,一般只有90～100天时间,生长发育快,穗分化集中,如何适时满足其生长发育对养分的需求,是争取玉米高产稳产的重要措施,而传统落后的施肥方法正是限制夏玉米高产的主要因素。1传统施肥方法1.1施肥的时期不对传统的施肥习惯是轻施或者不施基肥,习惯把有限的肥料在玉米大喇叭口期追施,后又演变为轻施拔节肥,重施穗 Summer maize growth period is short, usually only 90 to 100 days, rapid growth and development, spike differentiation, how to meet the growth and development of nutrients at the right time, is an important measure for high yield and stability of corn, and the traditional backward fertilization method is Main factors limiting the yield of summer maize. A traditional method of fertilizers 1.1 The period of fertilization is not light or non-traditional fertilization habits of the base fertilizer, used to put a limited fertilizer in the corn trumpet mouth chase, and later evolved into the light to pull fertilizer, heavy spike