黑龙江省高纬地区几个主栽玉米品种适宜密度的研究

Study on Suitable Density of Several Maize Varieties in High Latitude Area of Heilongjiang

以黑龙江省高纬地区的3个主栽玉米品种为试验材料,在6种不同种植密度条件下,研究了种植密度对3个玉米品种产量的影响,制定了3个主栽玉米品种的最佳种植密度。结果表明:平展型品种克单11的最适种植密度为60 000株.hm-2;半紧凑型品种边单3号的最适种植密度为67 500株.hm-2;紧凑型品种德美亚1号的最适种植密度为82 500株.hm-2。紧凑型品种在高密度条件下更容易获得较高的产量,3种类型之间的关系为:紧凑型>半紧凑型>平展型。

Taking three main maize varieties of highlatitude area as materials,the effect of six different plant densities on maize yield was studied,and the best plant densities of the three varieties were acquired.The results showed that the suitable plant density of Kedan 11 was 60 000 plant·hm-2,the suitable plant density of Biandan No.3 was67 500 plant·hm-2 and the suitable plant density of Demeiya No.1 was 82 500 plant·hm-2.Therefore,the compact varieties could achieve higher yield under high density.The relation of the three kinds of varieties was compact maizesemi-compact maizespreading maize.