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Effects of Flue-cured Tobacco and Sweet Clover and Sweet Potato Intercropping on Leave Potassium Contents and Virus Diseases Occurrence of Tobacco
Liu Lifang, Tang Shikai,, Xiong Junfen, Zheng Yi
Chinese Agricultural Science Bulletin . 2006, (8): 238 -238 .  DOI: 10.11924/j.issn.1000-6850.0608238