The planting time of peony in the open field is autumn, and the best time is from early September to early October of 10. Oil is planted with peony, and generally 2-year-old "Feng Dan" seedlings are selected. Soak in 800 times thiram solution 15 ~ 20 minutes, dry and plant.

Second, the planting density

There are generally three planting densities for planting oil peony: ① 3000-4000 plants per mu, with row spacing of 40×50cm. (2) Plant 6000-7000 plants per mu with a row spacing of 20×50 cm. Every 1-2 years, every other plant can be pulled out, which can be used as ornamental peony grafted seedlings or planted alone. It may not be removed, and high yield can be achieved 1-2 years in advance. ③ Plant 10000- 12000 plants per mu with a row spacing of 20×25cm (or 15×30cm). 1-2 years every other row, and every other plant in the third year (if the plant spacing is 20×25cm, it may be early and high yield).

Third, planting

When planting, insert the shovel into the ground, open the gap and put the peony seedlings, pull out the shovel, gently lift the seedlings upward, so that the roots are slightly lower than the ground 1-2cm, and step on it to make the roots closely connected with the soil. After planting, the planting holes are sealed with soil to form ridges with the height of 10 ~ 20 cm. The densities of 6000-7000 plants/mu and 10000- 12000 plants/mu can be sealed. The planting depth of two-year-old seedlings is generally 25-35cm, and some seedlings with long roots can be cut off based on the fact that the roots are not curled after planting.

Fourth, on-site management

After planting, the sealed soil ridge should be gradually leveled in spring in combination with hoeing to facilitate field management. During the growth period of peony, you should often hoe the ground. Deep hoe before flowering, the depth can reach 3 ~ 5 cm; Use a shallow hoe after flowering, the depth can reach 1 ~ 3 cm.

Superficial application

In the first year after peony planting, topdressing is generally not needed. Starting from the second year, topdressing will be done twice a year. Before and after the vernal equinox, apply 80 ~ 100 kg of compound fertilizer per mu; Before winter, apply 300-400 kg of cake fertilizer or 2000-3000 kg of decomposed manure and 80- 100 kg of compound fertilizer per mu.

Pest control in early February, spray 3 Be stone sulfur mixture or 500 times carbendazim solution, and cover the whole ground when spraying. At the beginning of March, 20 ~ 30 kg of phoxim granules were sprayed per mu. In the middle and late April, the same amount of Bordeaux solution and zineb solution were sprayed 7 ~ 10 days before flowering. Spraying fungicides such as carbendazim, thiophanate-methyl and chlorothalonil every 15 ~ 20 days from mid-late May to mid-late September.

During the growth period of peony, the application frequency can be adjusted according to the occurrence of pests and diseases, but the application frequency should not be less than 3 times in the whole growth season. After the leaves of Paeonia suffruticosa are unfolded, it can be combined with pest control for foliar topdressing. Spray 400 times of potassium dihydrogen phosphate or other foliar fertilizer every 15 ~ 20 days. Spray continuously for 3-5 times.

Watered peony is a fleshy root, which is not resistant to water and humidity. Drainage facilities should be unblocked to avoid water accumulation. It is not advisable to water frequently. However, it is necessary to water in time during drought, especially before and after flowering or before wintering, to ensure moderate soil moisture. Trenching and infiltration should be carried out to avoid watering at high temperature. Advocate the use of drip irrigation, micro-spray and other water-saving irrigation measures. Cleaning up fallen leaves 65438+1After the leaves dry up in late October, clean up the nursery land in time, burn it or bury it deeply, so as to reduce the occurrence of pests and diseases in the coming year.