On the slightly acid soil, application of NPK+DCD+Mo enhanced lettuce yield by 21.4% and improved its quality, decreasing nitrate content by 27.3%.

• 微酸性土以氮磷钾 +DCD +Mo配施较施氮降低茎硝酸盐含量 2 7.；3%25；改善了营养品质；提高产量 2 1