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Studies on Effects of Controlled-release BB Fertilizer on Soil Enzymes Activities during Watermelon Growing Period
Jing Dawei,, Yang Guanghuai, Ma Wenli, Liu Chunsheng
Chinese Agricultural Science Bulletin . 2009, (16): 150 -152 .  DOI: 10.11924/j.issn.1000-6850.2009-0529