SHAN Li-li,ZHAO Hai-xin,ZHAO Feng-min,et al.Study on Yield Component and Dry Matter Accumulation ofLongjing 20 with Different Nitrogen Application Amount[J].HEILONGJIANG AGRICULTURAL SCIENCES,2011,(06):29-30.
不同施氮量对龙粳20产量构成及干物质积累的影响
- Title:
- Study on Yield Component and Dry Matter Accumulation ofLongjing 20 with Different Nitrogen Application Amount
- 文章编号:
- 1002-2767（2011）06-0029-02
- 分类号:
- S511.062
- 文献标志码:
- A
- 摘要:
- 以龙粳20为试验材料，研究了不同施氮水平对龙粳20产量构成因子及干物质积累的影响，旨在为其高产栽培及品种推广应用提供理论依据。结果表明：尿素施用量275～312.5 kg·hm-2的处理具有较高的平方米穗数、平均穗粒数和结实率，产量水平较好；龙粳20单穗灌浆速率无明显灌浆高峰，整个灌浆模式近似半圆形状，灌浆过程比较平稳；低肥处理区群体灌浆速率在8月13日后明显低于高肥处理。
- Abstract:
- Taking Longjiang 20 as experimental material,the effect of different nitrogen fertilizer leves on yield component factors and dry matter accumulation of Longjing 20 were studied to offer a theoretical basis for the high yield cultivation and the cultivar application.The results showed when urea fertilizer application was 275～312.5 kg?hm-2,the spike number per square,average grain number,seed setting rate and yield were higher.There was no remarkable filling peak for single spike filling rate of Longjing 20,the grain filling models approximated hemicycle,the filling process was smooth.The population filling rate of low fertility treatment was lower than that of high fertility treatment after August 13th.
参考文献/References:
[1]孙淑红.早熟优质丰产水稻龙粳 20 特征特性及关键栽培技术 [J]. 黑龙江农业科学， 2010 （ 1 ）： 128 - 129. [2]孙海正.寒地水稻优质、高产、抗病新品种龙粳20保优高产栽培技术[J].作物杂志，2010（3）：106-107.
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备注/Memo
基金项目： “十一五”国家科技支撑计划资助项目（2007BAD65B01-4）