When will the peony flowers be fertilized?
As the first of the top ten famous flowers in China, the elegance and grandeur of peony flowers is inseparable from scientific fertilization. Mastering the time nodes and skills of peony flower fertilization can not only prolong the flowering period, but also enhance the plant's disease resistance. This article will explain in detail the annual fertilization plan for peony flowers through professional horticultural knowledge. During the golden period of cultivation, a 20-cm-thick base fertilizer layer needs to be applied to the bottom of the planting hole. It is recommended to use fully fermented cake fertilizer and humus soil mixed in a ratio of 1:3. The base fertilizer should be 15-20cm away from the root system to avoid direct contact with new fibrous roots. High-quality base fertilizer can provide nutrient supply for peony flowers for 2-3 years. Nutritional management plan for flowering period: Topdressing techniques before flowering apply potassium dihydrogen phosphate solution (concentration 0.2%) 15 days before the bud appearance period (about late March in the north), combined with 50g of bone meal per plant in circular ditch application. At this time, supplementing phosphorus and potassium can increase the flower diameter by 1- 2 cm, making the color more colorful. Key points of supplementing fertilizer after flowering 14-18 days after flowering is the critical period for flower bud differentiation. It is necessary to apply compound fertilizer (N-P-K=10-30-20) 30g per square meter, combined with foliar spraying boron fertilizer. Timely supplementation of nutrients can increase the amount of flowering in the coming year by more than 30%. Winter fertilization strategy 20 days before the beginning of winter (mid-October in the north), ditch 15cm along the drip line of the plants, and bury 3kg of decomposed sheep manure/plant mixed with 1kg of plant ash. Organic fertilizers slowly release heat, which can increase the soil temperature around the roots by 2-3 ° C, effectively preventing freezing damage. The principle of concentration control for peony flower fertilization taboos is sensitive to the EC value, and the concentration of water-soluble fertilizer needs to be ≤800μS/cm. Water must be poured immediately after fertilization during the high temperature period in summer to prevent salt accumulation and causing "root burning" phenomenon. Stop fertilizer management during dormant period When the temperature continues to exceed 28℃, the peony flowers enter a semi-dormant state. At this time, all fertilizer application should be stopped and only the soil should be kept in a slightly moist state. Misapplication of fertilizer can lead to unbalanced penetration of root cells and cause the risk of root rot.
Scientific fertilization is the core technology for peony flower maintenance. By grasping the three key periods of basic fertilizer laying, flowering control, and winter protection, and cooperating with strict concentration control, the peony flower can maintain its unparalleled brilliance as "the blooming season moves the capital." It is recommended to formulate a personalized fertilization plan based on soil testing data to make the national beauty bloom more lasting.