中国稻米

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不同生长调节剂对机插稻秧苗素质及产量的影响

  1. 1湖南农业大学农学院,长沙 410128;2南方粮油作物协同创新中心,长沙 410128
  • 出版日期:2019-03-20 发布日期:2019-03-20
  • 通讯作者: 陈光辉
  • 基金资助:

    国家重点研发计划项目(2016YFD0300509)

Effects of Different Growth Regulators on Seedling Quality and Yield of Mechanical Transplanted Rice

  • Online:2019-03-20 Published:2019-03-20

摘要:

以中早39和陆两优996为试验材料,研究了不同生长调节剂处理对机插稻秧苗素质及产量的影响。结果表明,中早39和陆两优996以播前用烯效唑浸种的处理叶龄、茎基宽、百株鲜质量相对较大,分别为3.52叶和3.81叶、0.25 cm和0.27 cm、21.15 g和23.48 g,而漏插率、翻倒率、伤秧率和勾秧率分别降低了38.0%~69.0%、44.0%~58.0%、14.0%~26.0%和22.0%~40.0%,全生育期缩短1~2 d,产量最高分别达7.97 t/hm2和8.39 t/hm2;播前用多效唑喷施的处理产量次之,但全生育期延长了2 d。用烯效唑浸种对中早39的增产优势更为明显。

关键词: 水稻, 机插秧, 烯效唑, 多效唑, 秧苗素质, 产量

Abstract:

Effects of different growth regulators on seedling quality and yield of mechanical transplanted rice were studied, using Zhongzao 39 and Luliangyou 996 as experimental materials. The results showed that Zhongzao 39 and Luliangyou 996 had relatively larger leaf age, stem width and 100 fresh weight under the treatment of uniconazole soaking, which were 3.52 and 3.81 leaves, 0.25 cm and 0.27 cm, 21.15 g and 23.48 g, respectively; leakage rate, fallover rate, scarcity rate and hooking rate were decreased by 38.0% to 69.0%, 44.0% to 58.0%, 14.0% to 26.0%, and 22.0% to 40.0%, respectively; the whole growth period was shortened by 1~2 days; the highest yield reached 7.97 t/hm2 and 8.39 t/hm2, respectively. The yield of the treatment of paclobutrazol before sowing was the second, but it’s whole growth period was extended by 2 days. Moreover, uniconazole soaking was more effective in increasing yield of Zhongzao 39.

Key words: rice, mechanical transplanted rice, uniconazole, paclobutrazol, seedling quality, yield

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