The nutrients absorption of whole growing periods on welsh-onion was K>N>P,and the N:P:K was 1:0.14:1.27. That means the plants should be absorbed N3.42kg,P_2O_50.48 kg,K_2O4.33 kg for 100kg yield.

• 大葱整个生育期吸收的养分K>N>P；N:P:K为1:0.；14:1