Field experiment was conducted to study the effect of water and nitrogen on yield and nitrate content of amaranth (Amaranthus tricolour) and spinach (Spinacia oleracea) and their water use efficiency.

• 通过田间试验研究不同水氮管理对苋菜和菠菜的产量、水分利用效率及硝酸盐含量的影响。