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Newbould P. The use of fertilizer in agriculture. Where do we go practically and ecologically? 1989. 李書琴.;提高N肥利用率;促進(jìn)農(nóng)業(yè)生產(chǎn)發(fā)展;'96國(guó)際肥料與農(nóng)業(yè)發(fā)展學(xué)術(shù)研討會(huì)論文集