The Research On Growth Effects Of Nitrogen Amount And CRF On Petunia, Pansy, Daisy And Anthurium

There are two parts in this experiment:1. Effects of the amount of nitrogen application on petunia, pansy, daisy and Anthurium.2. Effects of controlled release fertilizers on the plants mentioned above.The purpose was to find out the optimal nitrogen amount of the four ornamental plants and the effects of controlled release fertilizer on the growth of them.The main results are as follows:Compared with the treats of N300, N100 and CK, the rate of 80 mg. pot-1 of nitrogen (N200)was proved to be more optimal and economical for the growth quantity and quality of petunia and daisy. Plants fertilized with N200 not only had better spatial morphology and lager flower size but also much more flower number. However, for pansy the rate 120 mg. pot-1 of nitrogen (N300) was proved to be the most optimal.Controlled-release fertilizers of CAU3144F and COMPO had positive effects on the growth of petunia, daisy and pansy comparatively. CRF of CAU3144F was the most optimal for petunia, COMPO for pansy and daisy respectively.The optimum nitrogen application amount for the growth quality of Anthurium Robino was estimated to be 160 mg pot-1 of nitrogen (N200) in this experiment.Fertilization with CAU31 and COMPO resulted in larger plants compared with those fertilized with N200 and nutrient solution. The flower number of the treatments with N200 and CAU3135F were much more than other treatments.