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The Puyang grain model underproduction year and the main eteorological disaster analyze
王建英,韩相斌,王超,高春景,钟天华,韩铮铮,谢若梅
Chinese Agricultural Science Bulletin . 2010, (1): 243 -247 .  DOI: 10.11924/j.issn.1000-6850.2009-1627