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杂草稻竞争对栽培稻根系形态生理特性及产量的影响

DOI: 10.7668/hbnxb.2010.05.031, PP. 150-154

Keywords: 栽培稻,杂草稻,根系形态,根系生理,竞争

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Abstract:

为了防控杂草稻,以杂草稻WR03-12、栽培稻沈农26为试验材料,采用盆栽替代法,研究杂草稻对栽培稻沈农26根系形态生理特性和产量的影响.结果表明:杂草稻的竞争导致栽培稻沈农26根质量、根体积、根冠比、根伤流速率、根系吸收面积、单位根质量氧化力、单株根系氧化力等显著降低,降低程度随杂草稻密度的增大而加剧.随杂草稻密度增加,栽培稻的产量极显著降低;杂草稻的竞争对栽培稻根系形态生理特性的不利影响很可能是导致栽培稻减产的重要原因之一.

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