氮肥运筹对超级稻库源关系、干物质积累及产量的影响
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安徽科技学院农学院,安徽农业科学院水稻研究所,安徽农业科学院水稻研究所,安徽科技学院农学院,安徽农业科学院水稻研究所

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S511.606.2

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国家科技支撑计划项目(2011BAD16B06)、国家公益性行业(农业)科研专项 (201309102)和安徽科技学院自然科学基金项目(ZRC2014424)资助。


Effects of Nitrogen Application on Source-sink Relationship, Dry Matter Accumulation and Yield of Super Hybrid Rice
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Anhui Science and Technology University,Rice Research Institute Anhui Academy of Agricultural Sciences,Rice Research Institute Anhui Academy of Agricultural Sciences,Anhui Science and Technology University,Rice Research Institute Anhui Academy of Agricultural Sciences

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    摘要:

    以“扬两优6号”和“新两优6号”两个超级稻品种为材料,在总施氮(尿素)量600 kg/hm2 条件下,研究了氮肥运筹方式对超级稻库源关系、干物质积累及产量的影响,以期为超级稻高氮肥用量的情况下合理运筹氮肥提供依据。结果表明:与氮肥全部作为基肥施用(对照)相比,氮肥施用后移,使超级稻分蘖数减少、成穗率提高;齐穗期有效叶面积提高,库源关系协调;中后期干物质积累显著增加,产量显著提高。其中,两个品种均是基肥:分蘖肥:促花肥:保花肥:粒肥为3︰1︰1︰1︰0的处理产量最高,分别较对照增产22.86%、27.15%,增产均达极显著水平;重施分蘖肥处理(基肥、分蘖肥各占50%)的产量最低,分别较对照减产7.69%、6.32%,减产分别达极显著、显著水平。

    Abstract:

    Effects of nitrogen application on source-sink relationship, dry matter accumulation and yield of Yangliangyou-6 and Xinliangyou-6 were studied. The total nitrogen fertilizer was 600 kg/hm2 urea and applied with several modes. The results indicated that the postponing N application reduced the tiller number and increased panicle bearing tiller rate compared with total nitrogen applied as basal fertilizer. This type of nitrogen application also increased the effective leaf area of full heading date, coordinated the source-sink relationship, and increased the dry matter accumulation of middle period and final stage and the yield of rice significantly. Among the tested nitrogen application modes, the treatment with a ratio of basal fertilizer: tillering fertilizer: spikelet-promoting fertilizer: spikelet-protecting fertilizer: grain fertilizer at 3︰1︰1︰1︰0 obtained the highest grain yield, and the yields of Yangliangyou-6 and Xinliangyou-6 were increased by 22.86% and 27.15%. While that with the ratio at 1︰1︰0︰0︰0 had the lowest grain yield, and the yields of the two varieties of rice were decreased by 7.69% and 6.32%.

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杨安中,吴文革,李泽福,段素梅,陈 刚,许有尊.氮肥运筹对超级稻库源关系、干物质积累及产量的影响[J].土壤,2016,48(2):254-258. YANG An-zhong, WU Wen-ge, LI Ze-fu, DUAN Su-mei, CHEN Gang, XU You-zun. Effects of Nitrogen Application on Source-sink Relationship, Dry Matter Accumulation and Yield of Super Hybrid Rice[J]. Soils,2016,48(2):254-258

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历史
  • 收稿日期:2015-04-16
  • 最后修改日期:2015-05-05
  • 录用日期:2015-06-09
  • 在线发布日期: 2016-04-01
  • 出版日期: 2016-04-25