LIU Lin-shuai,WANG Jun-he,SUN Xing-rong,et al.Yield Prediction of A New Fragrant Rice Variety Qijing 10 with High Quality in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2021,(08):12-15.[doi:10.11942/j.issn1002-2767.2021.08.0012]
寒地优质香稻新品种齐粳10的产量预测
- Title:
- Yield Prediction of A New Fragrant Rice Variety Qijing 10 with High Quality in Cold Region
- Keywords:
- Qijing 10; SPAD value; correlation; yield forecast
- 文献标志码:
- A
- 摘要:
- 为揭示优质粳稻齐粳10孕穗期发育状况与成熟期稻米产量之间的关系,以粳稻品种齐粳10为试验材料,测定孕穗期植株高度、孕穗期分蘖以及孕穗期冠层叶SPAD值,并与产量相关性状进行相关性分析。结果表明:单株产量与孕穗期植株高度显著正相关,与孕穗期分蘖数、孕穗期顶部叶SPAD值呈极显著正相关。最终通过优化得出营养诊断值(NDC)和基于孕穗期营养诊断值的产量预测方程,即NDC=株高×分蘖数×SPAD2÷10 000,单株产量(g)=8.9×NDC-48.9,决定系数为0.795。
- Abstract:
- In order to reveal the relationship between the development status of high quality japonica rice Qijing 10 at booting stage and the rice yield at maturity stage,this paper measured the plant height at booting stage,tillering at booting stage and SPAD value of canopy leaf at booting stage of Qijing 10,and analyzed the correlation with yield.The results showed that, the yield per plant was significantly positively correlated with the height of the plant at booting stage,the number of tillers at booting stage and the SPAD value of the top leaf at booting stage.Finally,the nutritional diagnosis value(NDC) and the yield prediction equation based on the nutritional diagnosis value at booting stage were obtained through optimization,NDC=plant height×tiller number×SPAD2÷10 000,the yield prediction equation based on the nutritional diagnostic value at booting stage was finally fitted,the yield per plant(g)= 8.9×NDC-48.9,and the determination coefficient was 0.795.
参考文献/References:
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备注/Memo
收稿日期:2021-02-18