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氮肥运筹对滨海稻区钵苗机插水稻生长发育及产量的影响

  1. 辽宁省盐碱地利用研究所,辽宁 盘锦 124010
  • 出版日期:2018-01-20 发布日期:2018-01-20
  • 基金资助:
    耐盐高产优质水稻高效栽培技术示范推广(G CNT-LN-16);环渤海辽宁增粮技术集成与示范(2013 BAD05B07);辽宁省博士科研启动基金(20141169);辽宁省水稻产业重大农技推广服务试点项目

Effects of Nitrogen Application on Growth and Yield of Pot-seedling Mechanical Transplanting Rice in the Coastal Region

  • Online:2018-01-20 Published:2018-01-20

摘要: 以滨海稻区代表性水稻品种盐丰47为材料,比较研究了不同氮肥运筹方式对钵苗机插水稻茎蘖动态、叶面积指数、干物质积累、光合速率、产量及其构成因素等的影响。结果表明,在仅施用速效肥料的前提下,氮素中基肥、一次蘖肥、二次蘖肥、一次穗肥、二次穗肥比例为40∶12∶18∶16∶14时,盐丰47的收获穗数、叶面积指数、高效叶面积率、有效叶面积率、干物质积累量、收获指数、光合速率较高,从而获得较高的产量。

关键词: 氮肥, 钵苗机插水稻, 生长发育, 产量

Abstract: The effects of the nitrogen application on tillers dynamic, leaf area index(LAI), dry matter accumulation, photosynthesis rate, yield and its components were studied in this paper, using Yanfeng 47 as materiel, which was a typical rice variety in the coastal region. The results showed that the yield of the treatment was highest, with the ratio of basal fertilizer to first tillering-fertilizer to second tillering-fertilizer to first panicle-fertilizer to second panicle-fertilizer is 40∶12∶18∶16∶14, due to the spike number, leaf area index, effective leaf area ratio and high efficient leaf area ratio, dry matter accumulation, harvest index, photosynthetic rate were higher.

Key words: nitrogen, pot-seedling mechanical transplanting rice, growth, yield

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