Study On The Selection And Cultivation Techniques Of Facility Potted Rose Hybrida

The fuzzy comprehensive evaluation method of 20 roses hybrida cultivars is adopted in the study. Through the experiment we select suitable for screening potted roses varieties, the facility for planting to lay the foundation. To prepare production potted roses hybrida of facility, in cultivation methods we study on the soilless-media of the potted roses, and select the soilless-media suitable for the potted roses hybrida.The cultivation in the greenhouse restricted by the sunshine and temperature will lead to the too high plant type, lodging, squid slender and light green leaves, so that the viewing is poor. Proper dwarf treatment for the potted production of the roses will help to improve the growth status and ornamental value. This study is discussed under the condition of using the growth retardant PP333 combined with water and fertilizer management in greenhouse of processing potted roses cultivation,and provided theoretical and technical basis of the potted rose cultivation in greenhouse conditions.1,According to industry standards and rose ornamental features,8 traits were chosen as evaluation index such as height, plant type, flowering rate, length of flowering period, etc. To select suitable potted rose hybrida,we have evaluation and rating to the 20 potted rose hybrida varieties by fuzzy comprehensive evaluation method.In 20 varieties, we selected the seven most suitable varieties for potted plants, six varieties more suitable for potted plants, three varieties of potting can be considered,and four varieties unsuitable for potted plants..2,To select the best soilless culture medium of potted roses, the new soilless medium that made of peat, perlite, vermiculite and sand in different volumetric proportions, which compared with in the orchard soil were tested. The physical and chemical properties and growth indication of potted roses were measured, the variance of different medium with ANOVA and multiple comparisons were analyzed. In the end, the best soilless medium was the first medium that formulated volume proportion of peat, perlite and vermiculite 1:1:1, and plant in the matrix is better than in the orchard soil.3,In this study we use growth retardant PP333 to treat the potted rose'Feishan' by two methods of spraying leaves and irrigating root, a total of five different concentrations. The result shows that:the concentration of Spraying leaves with PP333 1000mg.L-1 is the best effect, it can extend the flower viewing period and improve the ornamental value. Spraying PP333 1000mg.L-1 can increase the chlorophyll content, improve its flower value such as flower fresh mass and flower diameter, etc and have an important impact on quality.