【摘要】 1994～1995年在沈阳农业大学校内试验地研究了紧凑型和平展型两个类型玉米品种的生长发育规律，肥力、密度、品种的复式裂区试验表明，密度、品种是影响产量的重要因素，密度和产量呈显著相关，品种和产量呈极显著相关。密度和肥力的正交试验表明，密度和产量呈显著相关，三个大量元素肥料不同设计水平间均差异不显著可见品种密度在玉米栽培中的重要作用。更多还原

【Abstract】 The growth and development principle of two ecological varieties maize were studied in Shenyang Agricultural University from 1994 to 1995. The split plot experiment for fertility, density and variety, showed that focus on the affecting to grain yield, the plant density and variety are the most important factors. The correlation was significant between plant density and yield, and very significant between variety and yield. The different 1evels design test of three macroelement fertilizers shows that the yield differences is not significant. The orthogonal experiment of plant density and fertility was also revealed that the correlation between plant density and yield was significant.更多还原