Effects Of NPK Ratio And PH Regulation Of Growing Matrix On The Growth Of Oncidium

In this paper, using orthogonal test, pot experiment and Laboratory analysis.Study on the nitrogen phosphorus potassium fertilization with different levels of substrate pH on mineral element content of Oncidium orchid, affect vegetative growth and cut flower quality. Results are as follows:1、 Medium and large volume element of Oncidium highest K content,N content followed in leaves, pseudobulb, roots.N, K largest distribution in leaves, P, Mn distribution up to the false bulbs, Fe, Cu, Zn mainly in the roots.2、 Different levels of NPK fertilizer affect different organs Oncidium nutrient content of different.Nitrogen, potash mineral elements of Oncidium content on more complex and different elements varies in different organs change. When low-phosphate Oncidium high content of trace elements in various organs within a certain range of P fertilizer can promote Oncidium leaves, pseudobulb of medium and large volume elements and absorbing roots in N, P, K elements.3、 Potassium greatest impact on pseudobulb growth, followed by phosphorus, nitrogen minimum. The trial N1OOmg/L, P1OOmg/L, K110mg/L when Oncidium pseudobulb growing optimal.4、 The greatest impact on leaf growth is N, followed by P, and K is minimal.The trial N300mg/L, P100mg/L, Kl l0mg/L and N300mg/L, P100mg/L, K220mg/L when the leaves are growing Oncidium optimal.5、 Oncidium flowers on the quality of the greatest impact is P, and N, K followed.The trial N200mg/L, P50mg/L, K220mg/L and N300mg/L,P50mg/L, Oncidium flowers K220mg/L when the best quality.6、 By analyzing the effects of different levels of NPK fertilizer and NPK ratio on the growth and flowering of Oncidium can be found.The trial treatment combination N200mg/L, P50mg/L, K220mg/L Oncidium pseudobulb, leaf growing, cut flowers are good quality7、 During a growing pH5-6matrix up to fungi, Oncidium quality flowers, leaves, pseudobulb optimal growth. pH6-7the matrix of bacteria and actinomycetes most Oncidium flowers and leaves and the quality of growing pseudobulb followed.