Abstract:

The effects of the different N, P and K levels and several plant growth regulators on flowering of phalaenopsis were studied, the results showed: (1) N had a great effect on the formation of leaves, and there had more leaves in plant which had high content of N; P had a major effect on the differentiation of flower buding, it could promote the differentiation of flower bud through the application of phosphate fertilizer; K and N was effect on the elongation of flower stalk, and it had important influence on the length of flower stem.. (2) Sparying the hormone on the plant when the inflorescence and bud was formed, and Touching the Lanolin dissolved hormone on the base of stem before the differentiation of flower bud could advance the flowering. Spraying 100 mg/L and 150－200mg/L GA3 on the plant after the inflorescence and bud formation could advanced the f lowering 11days and 17days, respectively. Touching 150-200mg/L the Lanolin dissolved GA3 on the base of stem could advanced the flowering 10-12days. (3) The abnormal flower was reduced when the equivalent IBA or IAA was added in the GA3.