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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (21): 142-146.

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

氮肥和密度对精量穴直播的影响试验（一）——水稻产量形成特性

舒时富 郑天翔 贾兴娜 罗锡文 黎国喜 王在满 唐湘如   

  • 收稿日期:2009-06-29 修回日期:2009-07-21 出版日期:2009-11-05 发布日期:2009-11-05
  • 基金资助:

    精量穴直播水稻高产栽培技术集成研究与示范

Effects of Nitrogen Fertilizer and Density on Precision Hill-direct-seeding Rice

  • Received:2009-06-29 Revised:2009-07-21 Online:2009-11-05 Published:2009-11-05

PDF (PC)

867

摘要：

采用大田随机区组设计，研究了不同的施氮水平和不同的栽培密度水平对精量穴直播晚稻培杂泰丰产量形成特性的影响。结果表明：氮肥和密度对产量，生物产量，叶面积指数，结实率和每穗粒数影响显著。增加施氮量能够显著提高个体和群体生物产量，提高叶面积指数。N2D2处理实际产量和理论产量都最高，分别达到6.945 t?hm-2和8.166 t?hm-2，适合在生产上大面积推广。

关键词: 刺苦草, 刺苦草, 组织培养, 快速繁殖

Abstract:

By methods of field trials and randomized blocks design, the effects of nitrogen fertilizer and density on yield formation characteristics of precision hill-direct-seeding rice was studied in this experiment.The result indicated that different treatment of nitrogen fertilizer and density increased the yield,biological yield ,leaf area index,seed setting rate and grain number per panicle significantly.Biological yield and leaf area index was improved with the increasing amount of the nitrogen fertilizer increasing. within treatments,the actual yield and theoretical yield of N2D2 were most，respectively reach 6.945 t?hm-2 and 8.166 t?hm-2。It is suitable for Production and extension。