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DOI：10.3969/j.issn.1004-874X.2008.01.005
Author NameAffiliation
庄必海, 张敏强, 曹淑玲 广州市白云区农业科学试验中心,广州,广州,510425
广州市农业技术推广中心,广东,广州,510520 
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