Culture method of golden doll Hemerocallis

Golden doll Hemerocallis is an artificially cultivated horticultural variety of Hemerocallis, also known as yellow lily, native to North America, introduced to Beijing by the Chinese Academy of Sciences in the last century, and distributed in Jiangsu, Henan, Shandong, Zhejiang, Hebei, Beijing and other places. And cultivation and management is simple, suitable for planting in urban parks, squares and other green space embellishment, let's take a look at the golden doll Hemerocallis culture method!

Reproduction method

Hemerocallis przewalskii can be propagated by tissue culture and individual plants. the annual reproduction coefficient is generally 1:6 and the fertile soil can reach 1:10. Ramet can be carried out in the dormant period, dig up more than 2-year-old plants in spring from February to March, divide each bud into one, each plant must have a complete bud head, then according to the row spacing of 40 cm, plant spacing of 25 cm, planting hole depth of 10 cm 12 cm, first apply the basic fertilizer to the pit, cover the fine soil slightly, then plant it, cover the soil 4 cm and 5 cm after planting, compaction, and then water thoroughly. Separate planting can also be carried out in March, Jiangsu and Zhejiang areas before the beginning of February, will be dense clumps cut, each clump with two or three buds, replanted, the same year can blossom.

Soil selection

Hemerocallis przewalskii likes warm and adequate sunshine, cold-tolerant, requires deep and fertile soil, potted plants require loose soil, good drainage, and regular fertilization during the growing season. In the north, the underground tubers should be dug up before frost and stored in an environment with a temperature of about 5 ℃. Because of its large and colorful flowers, rich colors, good plant shape, easy cultivation. The optimum temperature for open field cultivation is 13-17 ℃. It is not strict with the soil, and it grows best in the loose and fertile sandy soil with good drainage, and it is also suitable for the growth of fertile clayey soil. The south of the Yangtze River can spend the winter in the open field in the windbreak.

Cultivated plant distance

Hemerocallis przewalskii is a dwarf variety and perennial flower with high reproduction coefficient. Sparse planting and ornamental effect is not good. Close planting affects ventilation and meristem. Generally, the row spacing is 20 × 20 cm or 15 × 25 cm. Once planted in 2012, the cultivated soil requires moist, fertile and well-drained sandy loam. Spraying new high-fat film after planting can effectively prevent aboveground water from evaporation, seedling water from transpiration, cut off diseases and insect pests, and shorten the slow seedling period.

Fertilizer and water management

The golden doll Hemerocallis has a long flowering period and can be sprayed with Zhuangtiling, which can make the buds strong, the petals enlarged, the flowers colorful and the florescence prolonged. The green period is also long, and sufficient base fertilizer is required in fertilizer and water management, and organic fertilizer and compound fertilizer are applied after full flowering. During the cultivation period, loosen the soil and weed twice in spring and summer, and apply 3-5 times water of mature human feces and urine every month from March to June. If phosphate fertilizer is applied once before flowering, the quality of flowers can be improved. Hemerocallis likes to be moist, should be watered at the right time, and new high-fat film should be sprayed to protect soil moisture.

Disease prevention and cure

On the basis of strengthening cultivation and management, the prevention of rust, leaf spot and leaf blight of Hemerocallis hemerocallis should clean up weeds, old leaves and withered scape in time. At the initial stage of the disease, the rust was sprayed with 15% strychnine spray for 1 time. 50% mancozeb and other sprays were used to control leaf blight and leaf spot.