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Effects of drip fertigation on yield, quality and economic benefit of pineapple Effects and methods of urea application combined with urease or nitrification inhibitors under drip irrigation on maize The Effects of Drip Fertigation on Tree Growth and Fruiting of Trovita Sweet Orange（Citrus sinensis Osbeck）in Calcareous Purple Soil in Chongqing of China Effects of fertilization method and nitrogen application rate on soil nitrogen vertical migration in a Populus ×euramericana cv. ‘Guariento’ plantation.