中国稻米

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机直播早籼稻施硅的增产效应及其生理生态特性研究

  1. 1江西成新农场,南昌 330125;2江西农业大学 / 教育部作物生理生态与遗传育种重点实验室,南昌 330045;3余江县农业局,江西 余江 335200
  • 出版日期:2019-03-20 发布日期:2019-03-20
  • 基金资助:

    国家重点研发计划(2017YFND0301605);国家自然科学基金(31760366);江西现代农业科研协同创新专项经费( JXXTCX2015001-004);江西省重点研发计划项目(20171BBF60030);江西省自然科学基金(20161BAB214171);江西省教育厅项目(GJJ150380)

Effects of Silicon Fertilizer on Yield and Physiological and Ecological Characteristics of Early Indica Rice with Machine Direct Seeding

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

摘要:

以常规早籼稻品种江早361为试验材料,在机直播条件下,研究了增施硅肥对早籼稻的增产效应及其生理生态特性的影响。结果表明,与不施硅肥对照相比,增施硅肥可显著增加早籼稻产量,增幅为13.18%。早籼稻增施硅肥,有利于促进根系发育,增加根系活力,缩短茎秆节间长度,促进基部节间充实,同时改善叶片形态,提高剑叶光合效率。此外,增施硅肥还有助于提高籽粒氮、磷、钾和硅素的吸收与积累,使机直播早稻具有较好的生理生态特性。

关键词: 机直播, 硅肥, 早籼稻, 产量, 生理生态特性

Abstract:

A field experiment was conducted to study the effects of silicon fertilizer on yield of early indica rice and its eco-physiology characteristics under mechanical direct seeding, using conventional early indica rice Jiangzao 361 as material. The results showed that silicon fertilizer could significantly enhance grain yield of early indica rice by 13.18%, compared with CK. Silicon fertilizer could promote root development, increase root vigor, shorten stem internode, promote basal internode enrichment, improve leaf morphology and increase photosynthetic efficiency of flag leaf of early indica rice. In addition, silicon fertilizer could improve the nutrient uptake and accumulation of nitrogen, phosphorus, potassium and silicon in grain. The application of silicon fertilizer on machine direct seeding early rice has better physiological and ecological characteristics.

Key words: mechanical direct seeding, silicon fertilizer, early indica rice, grain yield, physiological and ecological characteristics

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