| 李香玲，冯跃华，王小艳，王雨荷，李开兵，叶 勇，王 旭，李 杰.施氮量对机插杂交籼稻干物质生产特性的影响[J].广东农业科学,2015,42(21):1-5 |
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施氮量对机插杂交籼稻干物质生产特性的影响 |
| Effects of differrent nitrogen aplication amounts on dry mattercharacteristics of mechanized transplanted hybrid indica |
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| DOI： |
| 中文关键词: 施氮量 籼稻 干物质 产量 |
| 英文关键词: nitrogen application amount indica dry matter yield |
| 基金项目:国家自然科学基金（ 3 1 3 6 0 3 1 1 ，
3 1 1 6 0 2 6 3）；贵州省农业科技攻关项目（黔科合N Y
［2011］3085 号，黔科合NY［2013］3005 号）；贵州省
作物学省级重点学科建设计划项目（黔学位合字ZDXK
［2014］8 号） |
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| 摘要点击次数: 1459 |
| 全文下载次数: 471 |
| 中文摘要: |
| 以超级杂交稻准两优527 和Q 优6 号为材料，研究4 种不同施氮水平下机插杂交籼稻干物质生
产特性。结果表明：随着施氮量的增加，机插杂交籼稻的最高茎蘖数、株高、最高苗数、叶面积指数均逐渐增
大。在拔节期、孕穗期和抽穗期，随着施氮量的增加，茎鞘干物质的比例均有下降的趋势，而叶干物质的比例
增加；成熟期的茎鞘干物质变化规律不明显，叶干物质的比例随施氮量的增加有增加的趋势，而穗则呈现相
反趋势。随着施氮量的增加，有效穗数、每穗总粒数、产量均呈增加的趋势，千粒重、结实率均呈现先增后减
的趋势。在本试验条件下，施氮量和产量之间呈抛物线关系，机插杂交籼稻的最佳施氮量为201.62 kg/hm2，最
高产量达8181.68 kg/hm2。 |
| 英文摘要: |
| Super hybrid rice Zhunliangyou 527 and Q you 6 were used to research the characteristics of dry matter
of mechanized transplanted hybrid indica under 4 different N-fertilizer application rate. The results showed that with
the application rate of fertilizer-N improved，the highest stem tillers number，the height，the maximum seedlings and
the leaf area index increased gradually. At jointing stage，booting stage and heading stage，the stem/sheath ratio of dry
decreased gradually with increment of nitrogen application amount，whereas ratio of leaf dry matter were increased.
At maturity stage，the change law of stem/sheath ratio was not obvious，and the leaf area index increased with the
application rate of fertilizer-N improved，whereas the spike dry matter ratio were just the opposite. With the application
rate of fertilizer-N improved，the effective spikes，grains per spike and yield increased，and the grain weight，
setting rate first increased，and then decreased. There is a parabolic relation between nitrogen application amount and
yield under the tested condition，and the optimum nitrogen application amount and highest rice yield of mechanized
transplanted hybrid indica are 201.62 kg/hm2 and 8181.68 kg/hm2 respectively |
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