不同氮磷钾肥组合对塑料大棚柑橘苗生长发育的影响

Effects of Different N,P and K Combination on the Growth and Development of Citrus Seedling in Plastic Shed

为了探索不同氮磷钾组合对大棚柑橘苗生长发育的影响,从4月10日开始,每隔20 d施一次肥,连续进行4次水溶液土壤灌肥。通过不同氮磷钾组合对柑橘苗木的苗高、苗粗、主根生长量、须根量和苗木抽发2～4次梢等的生长量与发生量的影响结果分析可知,在柑橘苗追肥时以氮钾肥组合的处理效果最好,其次是氮肥,再次是氮磷肥组合,以后是氮磷钾肥组合、钾肥和磷肥的效果,各处理效果均显著优于对照。

In order to explore the different of N,P and K combination on the growth and development of citrus seedlings in plastic shed,from April 10th the soil fertilization were performed continuously for 4 times at intervals of 20 days.From the results of different N,P and K combination of the height of seedlings,roughness of seedlings,main roots,fibrous roots and bud bursting growth and occurrence quantity,the best treatment effect was N and K combination,the next was N fertilizer,then was N and P combination,the last was N,P and K combination.These were significantly different compared with control.