施肥、赤霉素“920”对水稻种子裂颖影响的研究

孙小文,刘延斌

中国农学通报. 2019, 35(22): 6-9

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中国农学通报 ›› 2019, Vol. 35 ›› Issue (22) : 6-9. DOI: 10.11924/j.issn.1000-6850.casb19030068
农学 农业基础科学

施肥、赤霉素“920”对水稻种子裂颖影响的研究

  • 孙小文, 刘延斌
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Fertilization and Gibberellin“920”: Effect on Glume Dehiscence in Rice Seeds

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摘要

为了探索施肥和赤霉素“920”对水稻种子裂颖的影响。以水稻品种‘旌优127’的双亲作为试验材料,开展追肥、喷施叶面肥、喷施“920”等试验研究。结果发现,孕穗期追肥时,适当的减施氮肥、或者增施磷钾肥均可显著降低裂颖发生的风险,增施磷钾肥对降低裂颖的效果优于减施氮肥的效果。破口期叶面喷施硼肥或钾肥均可显著降低裂颖发生的风险,其中叶面喷施硼肥的效果优于喷施钾肥,既喷施硼肥又喷施钾肥的效果更好。喷施“920”过早、或者过晚均显著加重裂颖,其中喷施偏早的影响更显著。对‘旌优127’制种而言,抽穗20%时每hm2喷施300 g“920”是比较理想的选择。

Abstract

The paper aims to explore the influence of fertilizing and gibberellin 920 on glume dehiscence. The parents of rice variety Jing you 127 were chosen as tested materials. The experimental treatments included topdressing, spraying foliar fertilizer and spraying gibberellin 920. It was found that the proper decreasing of N fertilizer or proper increasing of P K fertilizer at booting stage significantly brought down the risk of glume dehiscence. The effect of increasing of P K fertilizer was more significant than decreasing of N fertilizer. Both measures of spraying boric or K fertilizer at rupturing stage significantly decreased the risk of glume dehiscence. The effect of boric fertilizer was better than K fertilizer. In addition, the effect of both boric and K fertilizer application together was much better. Early or later gibberellin 920 spraying increased the rate of glume dehiscence. The influence of early spraying was more obvious. It was an ideal selection for Jing you 127 to spray 300g gibberellin 920 per hectare when 20 percent panicles were in heading.

关键词

追肥;叶面肥;“920”;水稻种子;裂颖

Key words

topdressing; foliar fertilizer; gibberellin “920”; rice seeds; glume dehiscence

引用本文

导出引用
孙小文,刘延斌. 施肥、赤霉素“920”对水稻种子裂颖影响的研究. 中国农学通报. 2019, 35(22): 6-9 https://doi.org/10.11924/j.issn.1000-6850.casb19030068
Fertilization and Gibberellin“920”: Effect on Glume Dehiscence in Rice Seeds. Chinese Agricultural Science Bulletin. 2019, 35(22): 6-9 https://doi.org/10.11924/j.issn.1000-6850.casb19030068

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