Breeding method of purple-spotted peony
As a typical representative of rare alpine flowers, purple-spotted peony has attracted the attention of gardening enthusiasts for its unique cold resistance and graceful flower appearance. This woody plant, which originated from the high altitude area of northwest China, has shown amazing environmental adaptability in courtyard cultivation, but its cultivation management is significantly different from traditional peonies. Analysis of the growth characteristics of purple-spotted peony flowers in cold regions The original environment gives purple-spotted peony excellent cold-resistant genes, and it can still survive the winter safely in a low-temperature environment of-20℃. The ideal growth temperature zone is concentrated in the range of 10-20℃. In summer, continuous high temperatures above 30℃ need to be avoided. The surface temperature can be reduced by building sunshade nets. It is worth noting that when the temperature difference between day and night reaches above 8℃, the color of flowers will become more vivid. Xerophyte water manages natural distribution areas with annual precipitation of less than 400mm, creating their unique water-saving mechanism. Full irrigation is implemented once in spring and autumn to meet the annual demand, and special attention should be paid to drainage and waterlogging prevention in the rainy season. The circular ditch irrigation method can effectively avoid root neck rot, and when combined with pine needle covering, water evaporation can be reduced by more than 30%. Key technologies for cultivation of purple-spotted peony light control plan cultivation method of purple-spotted peony
Ensure more than 6 hours of scattered light irradiation every day, and use 50% sunshade net for protection in midsummer. When cultivating in high-altitude areas, planting on the southeast slope can extend the effective light time and extend the flowering period by 5-7 days. Properly increasing the light intensity during the flower bud coloring period will help the full accumulation of anthocyanins. The nutrient supply strategy adopts the "two fertilizers and three adjustments" fertilization method: apply decomposed sheep manure as a base fertilizer before germination in early spring, and apply phosphorus-potassium compound fertilizer after flowering. Combined with foliar spraying iron chelate solution, it can effectively prevent common nutrient deficiency in alpine soil. Note that fertilizer needs to be applied in an annular ditch 15cm away from the root neck to avoid burning roots. Methods for breeding and modeling of purple-spotted peony: Select mother plants over 5 years old and divide them around the autumnal equinox. Keep 3-5 main roots and appropriate amount of fibrous roots, and apply plant ash to the incision to prevent infection. After rafting, a 2-year root-raising period is required, during which flower buds are removed to ensure nutrient accumulation. Artistic pruning techniques