Why is the transplanting time of oil peony in autumn?

When will the oil peony be transplanted and planted? Experts suggest that oil peonies can also be transplanted in spring, and transplanting oil peonies in spring requires proper conservation to ensure the survival rate, and a large amount of manpower and material resources are invested, especially the development of oil peonies are planted on a large scale. Comprehensive consideration suggests transplanting oil peonies in autumn. Fengdan is a perennial woody plant, planted in fertile fields. The per mu yield of five-year-old peony is about 300 kg, which is 2-3 times that of domestic soybean and 2 times that of domestic peanut, while the yield of 15-year-old Fengdan peony can reach 600-800 kg per mu. At the same time, the yield of about 50 kg dry pollen per mu and a large number of peony tiller buds, peony petals, the whole body is treasure, high added value.

Growth habits of Fengdan

In a year, the root growth of Fengdan has the alternation of growth period and dormancy period, and does not completely coincide with the activity of aboveground organs.

In spring, when the temperature of 20cm soil layer is stable at 4 ℃ ~ 5 ℃, the roots begin to move and sprout new roots, which is basically synchronized with the germination of aboveground buds. With the increase of air temperature, the root system grows vigorously, and this process consumes a lot of nutrients and water during the leaf budding and flowering stage. the root system mainly absorbs nutrients from the soil and uses its own storage materials. in order to meet the nutrient needs of the rapid growth and development of the aboveground part, followed by the elongation and thickening of the root system itself.

In the high temperature season in summer, the aboveground part enters the stage of flower bud differentiation and seed development, when the root activity becomes weak and is in a semi-dormant state. After autumn, the temperature gradually decreased, the root system began to grow for the second time, and a large amount of nutrients accumulated in the root bark (mainly the secondary phloem). At this time, the aboveground part has entered the dormant period, but the root system is still growing, constantly producing new roots. The dormancy period of root system is later than that of aboveground part, and its growth period is longer than that of aboveground part, which is an important reason why Fengdan is suitable for transplanting in autumn.

Benefits of Autumn Transplant

When Fengdan was transplanted in autumn, the temperature dropped gradually, and the aboveground part entered the dormant period, which reduced the demand for water and consumed less nutrients, which was helpful to maintain the physiological balance. At this time, the root bark of Fengdan is rich in nutrients, and the ground temperature is still relatively high when the external air temperature has not dropped significantly, the root of Fengdan is not yet completely dormant, and the roots cut off during transplanting can heal as soon as possible. and the root system is still growing, constantly producing new roots.

After a winter, the roots are closely combined with the soil, and the new roots will grow rapidly next spring, effectively enhance the water absorption function of Fengdan roots, enhance their resistance to adverse environment, and be beneficial to the growth and recovery of shoots and shoots above ground. Ensure the survival of Fengdan.