Spring Management of Radix Paeoniae Alba

Radix Paeoniae Alba is a perennial herbaceous vine; the root is cylindrical, gray-black, about 8 mm in diameter; the stem is covered with two rows of hairs. Leaves opposite, membranous, ovate-lanceolate, 7-10 cm long, base 4-8 cm wide, tip long acuminate, base deeply auriculate-cordate, auricles rounded, pendulous, pilose on both surfaces. Umbels axillary with more than 20 flowers; calyx outside puberulent, with 5 glands on the inner surface of the base; Corolla white, lobes oblong, inner puberulent; corona cup-shaped, slightly longer than gynostegium, with 1 denticulate in the middle of lobes, or pleated or absent; pollen block 1 per locule, pendulous; stigma tip slightly 2-lobed. Follicles twin or only 1 developed, short lanceolate, ca. 8 cm long, 1 cm in diameter, acuminate toward end, base narrower, exocarp straight striped; seeds ovate, 6 mm long, 3 mm wide; seed hairs white sericeous, 3 cm long. The florescence is from June to October and the fruiting period is from August to November. The spring management of Radix Paeoniae Alba is very important. Let's introduce how to manage it in spring.

On the basis of winter pruning, the missing "soil buds" and overlapping branches, cross branches, disease and insect branches should be "pruned", and the branches whose terminal buds are leaf buds should be truncated-topped, so that nutrients can be concentrated on flower buds.

Fertilization can be applied before the end of February fully mature cake fertilizer or human feces and urine, 0.5 kg of cake fertilizer or 2 kg of human urine per plant. As Radix Paeoniae Alba is a "fertilizer-loving, fertilizer-tolerant" flower and plant, it doesn't hurt to apply more as long as it is a little far away from the root in the case of sufficient fertilizer. When the leaves of Paeonia lactiflora are unfoliated, 0.1murmur0.2% potassium dihydrogen phosphate can be used for foliar spraying, and 2 Murray can be sprayed 3 times before flowering, which can make the buds fuller and blossom large and bright.

The flowering of Paeonia lactiflora is similar to that of fruit trees, and there is also a phenomenon of "big and small years". When Radix Paeoniae Alba shows buds, it is necessary to thinning buds appropriately according to the tree situation and the flowering situation of the previous year. If there are many buds in that year, it can be regarded as a "big year". It is advisable to remove the small and thin buds on the thin branches (about 1 / 3 of the total buds of the whole plant). The work of soothing buds should be done sooner rather than later.

The climate of cold-proof spring is changeable, and Paeonia lactiflora is easy to be harmed by cold current and late frost before flowering. If there is a cold snap, it should be watered to increase the ground temperature; in case of late frost, light wet firewood and grass to produce smoke and prevent frost. For valuable varieties, single or multiple plants can be covered with plastic film to protect against cold.

If there is less rain and snow in spring, peony should be watered 3 times from sprouting to flowering, watering every 20 days or so. Flowering period should stop watering, do not spray water on the flowers, otherwise it will shorten the flowering time.

In addition, it should be noted that the residual flowers should be cut off in time after flowering, which can not only avoid "decay", but also avoid fruiting, thus reducing the consumption of nutrients. In addition, topdressing after flowering is also indispensable.