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以多抗较耐密玉米品种丹玉86和高抗耐密玉米新组合丹3363为试验材料,研究种植密度对产量及植株性状的影响。结果表明,丹玉86产量与密度呈二次回归方程的关系,在60 000株/hm2密度下产量最高;丹3363在75 000株/hm2密度下产量最高,在52 500株/hm2密度下产量最低。株高、穗位高、茎粗、叶片数、棒三叶长随密度变化不明显。丹玉86在60 000株/hm2密度下棒三叶宽、棒三叶面积最大;丹3363棒三叶宽、棒三叶面积随密度增加而降低。丹玉86和丹3363倒伏率和空秆率均随密度增加呈上升趋势。
The effects of planting density on yield and plant traits were studied with Dan-86, a new multi-resistant and more tolerant maize variety, and Dan 3363, a new high-resistant and tight-tolerance maize variety. The results showed that the yield and density of Dan Yu 86 showed a quadratic regression equation with the highest yield at a density of 60 000 plants / hm2. Dan 3363 had the highest yield at a density of 75 000 plants / hm2 and a yield of 52 500 plants / hm2 lowest. Plant height, ear height, stem diameter, leaf number, stick clover length changes with density was not obvious. Dan Yu 86 at 60 000 / hm2 density rod trefoil wide, stick clover the largest area; Dan 3363 bar clover width, stick clover area decreases with increasing density. Dan Yu 86 and Dan 3363 lodging rate and empty stalk rate increased with increasing density.