植物生长调节剂对春玉米茎秆农艺性状及产量的影响
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S513.01

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国家粮食丰产科技工程项目(2013BAD07B00,LFGC14328);国家玉米产业技术体系(CARS-02-38);公益性行业(农业)科研专项(201203031-07-01,201303125-2)


Effects of Plant Growth Regulator on the Stem Agronomic Characters and Yield of Spring Maize
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    摘要:

    以先玉335为试验材料,研究了植物生长调节剂对玉米茎秆农艺性状及产量的影响。结果表明:在玉米7~10展叶期间,喷施调节剂降低了玉米植株的穗位高度,随着喷施时期的推迟,株高逐渐降低、穗位逐渐升高,调节剂影响的基部节位逐渐上移;穗位以下节间缩短、增粗、穿刺强度增强,茎秆干重逐渐增加,植株重心下降;穗位以上节间拉长明显,茎秆干重逐渐降低。植物生长调节剂的增产效果较为明显,在试验设计范围内,于8展叶时施用化控剂"玉多十"较为适宜。

    Abstract:

    Taking Xianyu 335 as experiment material, effects of plant growth regulator on the stem agronomic charac-ters and yield of maize were studied. The results showed that plant growth regulator reduced maize ear height. Withthe delay of regulator application stage, the plant height gradually decreased, ear height gradually increased, influ-enced basal internode moved upward. The internodes below ear were shorter, thicker, stronger, the internodes aboveear elongated obviously, the stem dry weight above ear gradually decreased, the center of plant gravity decreased.Plant growth regulator raised maize yield, and within the testing range,‘Yuduoshi’spraying at 8 leaf expansion wasbetter.

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孟祥盟,孙宁,边少锋,方向前,赵洪祥,张丽华,谭国波,闫伟平.植物生长调节剂对春玉米茎秆农艺性状及产量的影响[J].东北农业科学,2016,41(6):16-20.

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  • 收稿日期:2016-08-02
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  • 在线发布日期: 2024-12-06
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