ZHAO Li-ming,GU Chun-mei,WANG Shi-qiang,et al.Effects of Different Densities on Rice Yield and Photosynthetic Substance Production in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2019,(01):27-32.[doi:10.11942/j.issn1002-2767.2019.01.0027]
赵黎明,顾春梅,王士强,王丽萍,王贺,那永光,解保胜
- Title:
- Effects of Different Densities on Rice Yield and Photosynthetic Substance Production in Cold Region
- Keywords:
- rice in cold region; density; yield; photosynthetic substance
- 文献标志码:
- A
- 摘要:
- 为明确不同密度对寒地水稻产量形成过程的影响,在大田条件下,以空育131为试验材料,设置行株距30 cm×8 cm(D1)、30 cm×10 cm(D2)、30 cm×12 cm(D3)、30 cm×14 cm(D4)、30 cm×16 cm(D5)五个密度水平,分析密度对水稻产量及光合物质生产的影响。结果表明:与D1、D5处理相比,D2和D3处理均显著增加了产量,分别实现了13.5%~14.6%和9.5%~10.4%的产量增幅,其中以D2处理效果最佳,该处理的增产途径是提高了单位面积有效穗数和抽穗前叶面积指数,增加了抽穗期前后干物质积累量和生物产量,增强了抽穗期茎鞘干物质生产及转运能力。综合分析表明,适当密植能够增加产量,促进水稻光合物质生产。
- Abstract:
- In order to clarify the effect of different density on the yield formation process of rice in cold area,the experiment was carried out in the land for growing field crops,and took ‘Kongyu131’as the experimental material.The spacing between rows and plants was 308 cm(D1),30 cm×10 cm(D2),30 cm×12 cm(D3),30 cm×14 cm(D4) and 30 cm×16 cm(D5),respectively.The effects of density on rice yield and photosynthetic substance production were analyzed.The results showed that compared with D1 and D5 treatments,D2 and D3 treatments significantly increased the yield,achieving 13.5%-14.6% and 9.5%-10.4% yield increments,respectively.The effect of D2 treatment was the best.The way to increase yield was to increase effective panicles per unit area and leaf area index before and after heading,increase dry matter accumulation and biomass before and after heading,and enhance dry matter production and transport capacity of stem and sheath during heading.Comprehensive analysis showed that proper dense planting could increase yield and promote photosynthetic material production.
参考文献/References:
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备注/Memo
收稿日期:2018-10-16