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本文系统地研究了紧凑型春玉米高产优化栽培生长发育过程中LAI、LAD、NAR等群体光合性能指标，建立了不同生育时期群体光合性能指标与密度、种肥氮量、种肥磷量、追肥氮量及追肥时期的关系模型，提出了紧凑型春玉米11250kg/hm2优化栽培的群体光合性能指标参数。
In this paper, photosynthetic characteristics of LAI, LAD, NAR and other populations in compact spring maize were systematically studied, and photosynthetic characteristics, photosynthetic characteristics, Nitrogen content and top-dressing period, and put forward the parameters of photosynthetic performance of the population of 11250kg / hm2 compact spring maize.