氮、磷、钾不同施肥水平对菊花生长发育的影响

The Effect of N,P,K Nutrients on Chrysanthemum Flower

以夏黄切菊花为材料,研究了氮、磷、钾三元素不同施肥水平对夏黄切菊花生长发育的影响。试验结果表明:在砂质壤土盆栽条件下,每公斤土壤基施 N0.17g,P_2O_50.12g,K_2O 0.17g 和追施 N,K 50mg营养液,夏黄切菊花生长发育良好。定植后菊花的地上部分氮素累积速率以营养生长和蕾期最高,花蕾透色后累积速率明显下降;磷的累积速率高峰在现蕾至开花期,供磷不足时,磷有从茎叶向花序转移的趋势;钾在地上部分各器官中累积始终较高,尤以花蕾透色后更为明显。

Pot experiments were made to study the effect of N,P,K nutrition on chrysan- themum flower.It was found that the plant grew well with base fertilizer of 0.17 g N· kg^(-1)soil,0.12g P_2O_5·kg^(-1)soil and 0.17g K_2O·kg^(-1)soil,together with dressing nutrient solution containing 50 mg N·L^(-1)and 50 mg K·L^(-1).N accumulation rate was high in early growth stage and bead stage,and then lowered down.The highest P accumulation rate appeared during flowering stage.Phosphorus might move from stem and leaves to flower when it is short.All organs always contained high amount of potassium,which indicated that K was important to the flower.