MA Bo.Influence of Nitrogen Application on Yield and LAI of Aromatic Japonica Rice Suijing 4 in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2017,(02):48-50.[doi:10.11942/j.issn1002-2767.2017.02.0048]
氮肥运筹对寒地香稻绥粳4号产量及叶面积指数的影响
- Title:
- Influence of Nitrogen Application on Yield and LAI of Aromatic Japonica Rice Suijing 4 in Cold Region
- 文章编号:
- 1002-2767(2017)02-0048-03
- 关键词:
- 氮肥运筹; 寒地香稻; 产量; 叶面积指数(LAI)
- 分类号:
- S511
- 文献标志码:
- A
- 摘要:
- 为促进寒地香型粳稻高产高效栽培,以寒地香稻品种绥粳4号为材料,探讨了氮肥运筹方式对其产量及LAI的影响。结果表明:随着前期施氮比例的增加,有效穗数会增加,但成穗率会先上升后下降。产量随着前期施氮量的增加而先上升后又明显下降;NA3处理(底肥40%,返青分蘖肥30%,穗肥20%,粒肥10%)产量最高达9 564.8 kg〖DK1〗·hm2。分蘖盛期、齐穗期、成熟期的LAI均以NA4处理(底肥60%,返青分蘖肥20%,穗肥20%),重申最大,各时期LAI均与产量呈先上升后下降的二次曲线关系,分蘖盛期最适LAI为1.16,齐穗期最适LAI为5.34,结实期最适LAI为4.51。NA3处理的氮肥运筹方式更适合寒地香型粳稻绥粳4号。
- Abstract:
- In order to promote the highefficient and highyield cultivation of aromatic japonica rice,the influence of different nitrogen application on yield and LAI of aromatic japonica rice Suijing 4 in cold region were studied.The results showed that the more nitrogen in the early stage could significantly increase panicles per unit area,but effective tiller rate would first rise and then fall.When the amount of nitrogen in the early stage increased,the yield would first rise and then decrease.The yield of NA3 treatment(base fertilizer 40%,tillering fertilizer 30%,panicle fertilizer 20%,seed fertilizer 10%)was the highest and reached 9 564.8 kg·hm-2.LAI of NA4 treatment(base fertilizer 60%,tillering fertilizer 20%,panicle fertilizer 20%)was the highest in tillering vigorous stage and full heading stage and mature stage,and LAI of each stage had a conic curve relationship with the yield.The most suitable LAI in tillering vigorous stage was 1.16,and the most suitable LAI in full heading stage was 5.34,and the most suitable LAI in mature stage was 4.51.Thus nitrogen application of NA3 treatment was more suitable for aromatic japonica rice Suijing 4 in cold region.
参考文献/References:
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备注/Memo
基金项目:齐齐哈尔市攻关资助项目(NYGG-201514)、(NYGG-201403);
黑龙江省农业科学院青年基金重点资助项目(ZD-007)
作者简介:马波(1982-),男,黑龙江省齐齐哈尔市人,博士,助理研究员,从事水稻育种及栽培研究。E-mail:mabo8210@163.com。