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The main objectives of this paper were to explore effective ways of improving the lodging resistance of high-yield rice populations and the lodging resistance capacity responses of different rice populations to nitrogen.Field experiments were conducted at the following two eco-sites: Taoyuan (a special high-yield eco-site) in Yunnan province and Danyang (representative eco-site of the middle and lower Yangtze) in Jiangsu province, China in 2011 and 2012.