[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(08):22-25.[doi:10.11942/j.issn1002-2767.2020.08.0022]
不同种植密度对糯玉米相关性状及产量的影响
- 文献标志码:
- A
- 摘要:
- 为提高糯玉米经济效益，试验采用二因素随机区组设计，以京科糯2000和花甜加糯129两个品种为材料，设置3个种植密度37 500，45 000和52 500株?hm-2，研究种植密度对糯玉米生育期、植株性状、果穗性状和产量的影响。结果表明：随着种植密度的增加，京科糯2000和花甜加糯129生育期延长；株高和穗位都下降，双穗株率、分蘖率无明显规律；空秆率、倒伏率和倒折率均为零；穗长逐渐变短，穗粗和秃尖长没有明显变化，穗行数和行粒数在种植密度52 500株?hm-2时有最大值。在45 000株?hm-2密度下鲜百粒重和鲜果穗重有最大值，京科糯2000的鲜百粒重、鲜果穗重分别为50.4和316.7 g，花甜加糯129的鲜百粒重、鲜果穗重分别为48.4和302.2 g。京科糯2000和花甜加糯129在52 500株?hm-2密度下小区产量最高，分别为32.46和28.64 kg。综合考虑，京科糯2000和花甜加糯129的最佳种植密度为52 500株?hm-2。
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备注/Memo
收稿日期：2020-05-06