Cultivation methods and precautions for hydrangea chinensis
As a popular flower for courtyard landscaping, hydrangea is popular among gardening enthusiasts for its huge flower balls and gradient colors. This perennial shrub native to the Yangtze River Basin can achieve its ornamental value throughout the year through scientific maintenance. This paper will systematically sort out the complete maintenance system from environmental control to pest and disease control. The three elements of environmental control, temperature, light, balanced growth, the appropriate temperature range is 18-28℃, and it is necessary to maintain above 5℃ in winter to prevent freezing damage. In summer, sunshade nets are used to filter 50% of direct light, and the light duration is gradually increased from September to April of the following year. During the flower bud differentiation period, scattered light is maintained for 4 hours a day. The humidity circulation system uses a substrate hygrometer to monitor, maintaining 60% water content in spring and autumn, and spraying in the morning and evening during the high temperature season to increase humidity. It is recommended to combine pottery pots with perlite matrix to ensure that the roots are ventilated and prevent water accumulation. Precise management of water and fertilizer, irrigation cycle, control growth period, implement the principle of "seeing dry, seeing wet", and fully irrigate water when 2cm of topsoil is dry. During the winter hibernation period, the dipping pot method is used to replenish water every 10 days to avoid root rot. Nutritional ratio plan Hydrangea breeding methods and matters needing attention
Apply nitrogen, phosphorus and potassium balanced fertilizer (10-10-10) during the germination period, use high-phosphorus formula (5-15-10) during the bud period, and adjust the soil pH value with 0.1% ferrous sulfate solution every half month. Plant type optimization skills pruning and shaping strategy Carry out heavy cutting in March to retain 3-4 buds at the base, and cut off residual flowers in time after flowering. The lignification old branch keeps 15cm to promote the new bud germination, and the over-dense branch carries out thinning to improve the ventilation. Cuttage propagation points in May to select semi-lignified branches, retain 2 pairs of leaves with rooting powder treatment. Vermiculite mixed with peat as substrate, maintained at 25℃, 20 days after rooting gradually see light. Disease Prevention System Common Disease Treatment