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《Journal of Anhui Agricultural Sciences》 2007-19
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Effects of Soil Fertility and Planting Density on Canopy Structure of Winter Wheat

SHI Qiang et al (Department of Environmental Science,East China Normal University,Shanghai Key Laboratory for Urbanization Ecology Process and Eco-restoration,Shanghai 200062)  
[Objective] The influences of soil fertility and planting density on the canopy structure of winter wheat were studied.[Method] The stem and leaf characteristics changes of winter wheat population were analyzed under the condition of different soil fertility and planting density.[Result] It was confirmed as a reasonable population when the total stem number of wheat in reviving stage was lower than the mature spike number,the shuttle-shaped plant form at the stage of maximal population,and the leaf area coefficient in flowering stage was 4.Soil fertility had significant influence on the growth of wheat stems and leaves at early stage and had certain influence at middle-late stage.Density influenced the growth of stems and leaves before the formation of the largest population,while it had little effect after flowering.Density had more significant effects on wheat yield than soil fertility.[Conclusion] Wheat leaves of reasonable population varied with changes of solar position angle and altitudinal angle.Sufficient light obtained by the wheat population in the morning and evening favored to enhance the total light energy efficiency of population and total yield.This research provided a reference for developing new varieties and improving cultivation measures.
【Fund】: 国家自然科学基金项目(30370245 30470288);; 上海市生态学重点学科项目;; 华东师范大学211工程项目
【CateGory Index】: S512.11
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