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首页> 外文会议>Annual International Meeting of the American Society of Agricultural and Biological Engineers >Effect of Different Planting Density on Cotton Canopy Structure, Canopy Photosynthesis and Yield Formation
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Effect of Different Planting Density on Cotton Canopy Structure, Canopy Photosynthesis and Yield Formation

机译：不同种植密度对棉冠层结构，冠层光合作用和产量形成的影响

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摘要

The influence of different planting density on cotton canopy structure, canopy photosynthesis, and yield formation was studied under no water and fertilizer stress condition. The field-scale experiment with four planting densities ranks from 30000 to82500 plants per hectare for each of the two cultivars, i.e. early matured cultiyar CRI37 and mid matured cultivar Jimian25, was conducted in Lang fang experimental farm of Soil and Fertilizer Institute, Chinese Academy of Agricultural Sciences from 2002to 2003. Cotton canopy structure factors included LAI, Mean Foliage Inclination Angle (MFIA), Transmission Coefficient for Radiation Penetration (TCRP), and Transmission Coefficient for Diffuse Penetration (TCDP). Canopy photosynthesis factors includedCanopy Apparent Photosynthesis (CAP) and Canopy Respiration (CR). Yield formation factors included dry matter accumulation and distribution and yield. The results show that CRI37 and Jimian25 have ideal canopy structure and photosynthesis characteristicsunder the planting densities of 75000 plants per hectare and 52500 plants per hectare respectively, thus, can get the optimal yields. It can be concluded that selecting suitable planting density can improve solar energy utilization efficiency and resultin optimal yield. Ideal canopy structure indexes for the two cotton cultivars were also indicated.
机译：在没有水和肥料应力条件下，研究了不同种植密度对棉冠层结构，冠层光合作用和产量形成的影响。四种种植密度的田间规模实验从两种品种中的每一个，即早期成熟的Cultiyar CRI37和中期成熟品种Jimian25中的每公顷的30000〜82500株植物在劳累化肥研究所的朗芳实验农场进行了每公顷。 2002年2003年的农业科学。棉冠层结构因素包括LAI，平均叶倾角（MFIA），辐射渗透（TCRP）的透射系数和漫射渗透（TCDP）的透射系数。包括冠层光合因子包括明显光合作用（帽）和冠层呼吸（Cr）。产量形成因子包括干物质积累和分布和产量。结果表明，CRI37和Jimian25具有理想的冠层结构和光合作用特性，种植密度为每公顷的75000株植物，每公顷52500株植物，因此可以获得最佳产量。可以得出结论，选择合适的种植密度可以提高太阳能利用效率和结果最佳产量。还指出了两种棉花种类的理想冠层结构指标。

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