中国稻米

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植物生长调节剂对机插水稻抽穗后茎秆性状及产量的影响

  1. 江苏省连云港农垦农业科学研究所,江苏 连云港 222248
  • 出版日期:2017-09-20 发布日期:2017-09-20
  • 通讯作者: 杜洪艳
  • 基金资助:
    江苏省农垦农业科学研究院2016年农业科研项目(2016-03)

Effects of Plant Growth Regulators on Yield and Stem Characters after Heading of Mechanical Transplanted Rice

  • Online:2017-09-20 Published:2017-09-20

摘要: 以超级稻品种连粳7号为材料,研究了不同植物生长调节剂对机插水稻抽穗后株高、节间长度、茎秆性状及产量的影响。结果表明,喷施矮壮丰和劲丰能够增加机插水稻实粒数、结实率和千粒重,矮壮丰75 mL/667 m2的处理较对照增产49.63 kg/667 m2;喷施多效唑和烯效唑可以显著降低机插水稻株高,提高茎秆的抗折力,结实率和千粒重高于对照,但由于实粒数大大低于对照,最终没有达到增产的目的。

关键词: 水稻, 植物生长调节剂, 产量, 茎秆性状

Abstract: The effects of plant growth regulators on plant height, internode length,stem characters and yield after heading of mechanical transplanted rice, using super rice variety Liangeng 7 as material. The results showed that aizhuangfeng and jinfeng could increase filled grains, seed setting rate and thousand grain weight. The yield of treatment which spraying 75 mL/667 m2 aizhuangfeng was 49.63 kg/667 m2 higher than the control. Although paclobutrazol and uniconazole could reduce the plant height, improve the culm breaking-resistant strength and increase the seed setting rate and thousand grain weight, however the filled grains of the treatments of paclobutrazol and uniconazole were significantly lower than that of the control, and finally did not achieve the purpose of increasing yield.

Key words: rice, plant growth regulator, yield, stem characters

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