Brief introduction on introduction and matching cultivation techniques of new peony varieties in southern China
Oil peony has the characteristics of high output, high oil content, high quality and low cost. It is a plant resource that combines ornamental value, oil value and medicinal value. China's oil peony industry has great potential for development and has a broad market prospect. Let's take a look at the cultivation techniques of peony in southern oil. First, the southern planting oil is prepared with peony 1.1 Variety selection Choose high-quality, cold-resistant, drought-tolerant, and poor-tolerant varieties. The oil peony varieties planted in the southern region include Feng Dan and so on. 1.2 Plot selection Choose a loose, breathable, well-drained plot of soil, preferably sandy loam. 1.3 Soil preparation and fertilization Shik Cooked organic fertilizer 15.0~22.5 t/hm 2 , and evenly spread after flattening. Drainage of bad plots requires ridges and measures to prevent flooding. 1.4 seedling treatment Choose three-year or four-year-old Fengdan seedlings. Soak the whole plant with 50% thiram 800 times solution or 50% carbendazim 1000 times solution for 15~20 min, and dry it for planting. Second, planting The time for planting oil with peony is autumn, and the best time is from early September to early October. There are 2 planting densities, one is planting about 37,500 plants/hm 2 , the row spacing is 30 cm×80 cm, the second is planting 37,500 to 45,000 plants/hm 2 , and the plant spacing is 50 cm×50 cm. The choice of plant spacing should be based on the actual conditions of land drainage and agricultural machinery. When the oil is planted with peony, use a hoe to dig a pit with a diameter of 20 to 25 cm and a depth of 25 to 30 cm. Put the seedlings into the center of the hole, keep the roots stretched, put the peony seedlings up after filling the soil, and then step on the soil after the landfill, so that the soil and the seedling roots are closely connected, then pour the water, soak the water and then correct the seedlings, pile up into 10 rows. ~20 cm bandit, buried peony seedlings to keep warm and moisturizing. Third, field management 3.1 loose soil weeding In April of the next year, the minimum temperature was stable at 8 or above. Carefully digging the soil to reveal the peony seedlings, which is good for sprouting and growing branches. During the growth period of peony, you need to be diligent. It should be deep before flowering, and the depth can reach 3~5 cm. It should be shallow after flowering and the depth can reach 1~3 cm. Loose the grass 2 to 3 times a year, and loosen the soil in time after the rain. 3.2 Fertilizer and water management In the first year after peony planting, it is generally not fattening. Since the second year, the fertilizer has been topdressed twice a year. From April to May, compound fertilizer 600~750 kg/hm 2 was applied; in October, cake fertilizer 2 250~3 000 kg/hm 2 and compound fertilizer 600~750 kg/hm 2 were applied. Depending on the soil moisture, water is watered 2~3 times a year. When germination, flowering, and wintering, it is not suitable for flooding. Remember to water less. 3.3 Plastic trimming Trim twice a year. First, in the spring, cut off the dry branches and roots to sprout and maintain the shape of the plant; second, before entering the winter, cut off the top dead branches and the long branches that affect the growth of the seedlings, to weaken and stay strong. Fourth, pest control Peony diseases are mainly erythema, black spot and root rot. Red spot disease and black spot disease usually start in mid-to-late May, spraying 50% carbendazim 500 times solution, or 70% chlorothalonil WP 500 times solution, or 70% methyl thiophanate 800 times solution mixed leaf surface. Fertilizer control, spray once every 15~20 d, until the end of August to the beginning of September, the control effect is above 90%. The root period of root rot is in June, and 45% of the 4% solution of dexamethasone is watered. The control effect is good. Wenzhou Celecare Medical Instruments Co.,Ltd , https://www.wzcelecare.com
