试验采用 3种含不同阴离子的化肥 ,设 3个施肥水平 ,研究了它们对黄瓜生长、根系活力及对土壤EC、pH的影响。研究结果表明 :在 3个施肥水平下 ,化肥的不同阴离子对黄瓜生长的抑制作用是Cl->SO42 ->NO3 -,土壤中浓度越大 ,抑制作用越明显。土壤中随 3种离子浓度增高 ,EC值明显增大 ,pH值明显下降 ,其影响是Cl->SO42 ->NO3 -。 Three different fertilizers with different anions were used in this experiment. Three fertilizers were applied to study their effects on cucumber growth, root activity and soil EC and pH. The results showed that under the three fertilization levels, the inhibitory effect of different anions of chemical fertilizers on the growth of cucumber was Cl-> SO42-> NO3-. The greater the soil concentration was, the more obvious the inhibition was. With the increase of the concentration of three kinds of ions in soil, the EC value increased obviously and the pH decreased obviously. The effect was Cl-> SO42-> NO3-.