夏玉米高产栽培系统模拟研究

A Simulant Study on High Yield Cultivation System of Summer Maize

通过回归设计试验和夏玉米高产攻关田生育动态调查,经统计建模和系统模拟,优选出吨粮高产玉米农艺措施决策方案为:密度5.64～6.24千株/亩,追纯氮28.20～33.85kg/亩,P_2O_6 12.39～14.22kg/亩,K_2O 23.16～24.80kg/亩;并明确了高产玉米的株高及叶面积增长动态,从而为田间管理提供了依据.对产量构成因索的偏相关分析启示,要进一步夺取高产,应在合理密植的基础上,以力争穗粒数兼顾千粒重为主攻方向.

Based on the quadratic regression test and investigation of dynamic development of maize in experimental plot, the best farming measures for one ton per mu maize output were designed by means of statistical model and systematic simulation, which included density of 5.64~6.24 kiloplant/mu, 28.20~33.85kg/mu of topdressing pwre N per mu, P2O6 12.39~14.22kg/mu, K2O 23.16~24.80kg/mu, the plant highness and development of leaf area were shown to give the reason for field management, the analysis of the factors concerning the maize output has shown, to obtain higher yield, the number of ear and grain should be stressed on the basis of reasonable plant density as well as kilograin. weight.