【摘要】 为探讨不同种植行距与种植密度对玉米产量的作用效应,以玉米杂交种"协玉3号"为材料,随机区组设计。结果表明:不同行距与不同种植密度对玉米产量都有显著效应;随着行距增大,玉米产量增加显著,60cm等行距产量显著高于50cm等行距和60cm+40cm宽窄行,分别高出13.06%和13.10%;同一行距不同密度之间产量表现不同,等行距50cm随着密度增加产量降低。宽窄行60cm+40cm随密度增加产量略有提高,但差异不明显。等行距60cm随着密度的增加产量显著提高;不同种植行距与密度之间比较,均以等行距60cm为好,以75 000株·hm-2产量最高,达16 646.70kg·hm-2。说明在山西中部水浇地条件下采用紧凑型玉米品种,适当扩大种植行距、缩小株距、增加种植密度是提高玉米产量的有效途径。更多还原

【Abstract】 To investigate the interactive effects of various row spacing and planting density on maize yield,the research adopted the method of randomized block design based on the materials of XieYu 3(Maize Hybrid).The result revealed the significant effects of various row spacing and planting density on the maize yield.The yield of XieYu 3could be significantly improved with the increase of row spacing.The yield of equal spacing cornfield with 60 cm reached the very significant level,higher than that of cornfield of 50 cm and 60cm+40cm row spacing with 13.06% and 13.10%.In addition,in the same row spacing,the yield reached various levels due to diverse density.The yield of 50 cm spacing declined with increasing density.There was also little significant difference for slightly improved yield brought by 60cm+40cm spacing with increasing density.However,the yield of 60 cm spacing climbed significantly with increasing density.Compared with other row spacing and sowing density,the yield of 60 cm spacing reached peak with 16 646.70 kg from 75 000plant·hm-2.The result showed that it was an effective access to the increase of maize yield in the irrigated land of middle areas in Shanxi province,through adopting compact maize varieties and appropriately expanding row spacing,narrowing plant spacing and increasing planting density.更多还原