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Impacts of 33-yr of application of S-containing and Cl-containing chemical fertilizers on rice (Oryza sativa L.) yield and its components were investigated in a red paddy field experiment, south China. The treatments included: 1) adding 302 kg SO 42− -S ha −1 yr −1 with application of (NH 4 ) 2 SO 4 , K 2 SO 4 , and calcium superphosphate...
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