2. Commonly used cutting and sowing propagation, mainly cutting, mostly in early spring or rainy season, but also in late autumn and early winter, are easy to take root and survive. Especially in the root of the mother plant, cultivate the soil to make it grow more branches. After the bud length is 1 ~ 2 years, some roots are dug and transplanted, and cutting is easier to survive. Before germination in spring, cut the branches into 20-25 cm long and plant them in the sand bed for about 30 days. Sowing: After sowing, the single-petal hibiscus is dried and stored until the next spring, and germinates about 20 days after sowing. Because the cutting of hibiscus is easy to take root, when the cultivation amount is small, it can be planted directly in the planting hole according to the cultivation density without transplanting. You can also use long branches to directly insert into the soil for cultivation, and the depth should be more than 20 cm to prevent shallow lodging and drought damage.
Step 3 plant. Furong is not strict with soil. Generally, it can be planted in the open space, hillside and corner wasteland in front of and behind the house. It can also be planted as a hedge in a single row around vegetable fields and orchards, or planted in pieces for professional production. Single row ridge cultivation can be used, with ridge spacing of 1 10- 120 cm and plant spacing of 50-60 cm, with planting holes or ditches in the middle of the ridge. When transplanting hibiscus, when planting in planting ditch or planting ditch, sufficient base fertilizer should be applied. Generally, farmyard manure such as garbage soil or decomposed manure is mainly used, and a small amount of compound fertilizer is applied. Transplanting and planting should be carried out during seedling dormancy or rainy growing season. When transplanting, cut off some branches and leaves to survive. After planting, water 1 time should be poured to keep the soil moist until it survives.
4. Fertilizer and water management. Water it properly when the weather is dry, apply a little dilute liquid fertilizer in the peak season, and only trim it a little every year to make it ventilated and transparent. In order to keep the soil moist during the growing period, it is suggested to apply fertilizer 1 time before germination in spring and phosphate fertilizer twice at flowering stage of 6- 10. When the branches begin to sprout, topdressing should be done in time, mainly with quick-acting fertilizer to promote nutrient growth. Topdressing 1-2 times phosphorus and potassium fertilizer before budding to promote plant budding; During the flowering period of 65438+1October from May to June, weeding and soil improvement were combined with topdressing twice, with phosphorus and potassium fertilizer as the main component and nitrogen fertilizer as the auxiliary component to maintain the flower quantity and tree vigor; Weeding and clearing the garden in winter dormancy period, ditching or digging holes around the plants for fertilization, mainly farm manure, supplemented by appropriate inorganic compound fertilizer, to supply nutrients needed for growth and flowering in the coming year. In long-term dry and rainy weather, we should pay attention to irrigation, and when there is too much rain, we should drain water to prevent waterlogging.
5, plastic trimming. Newly planted hibiscus plants are small, so they can be allowed to grow or lightly pruned in the first 1-2 years, that is, pruning dead branches, weak branches of diseases and pests and declining branches in autumn and winter. When the tree grows up, the hibiscus plants should be trimmed and trimmed, and the pruning should be carried out after the leaves fall in autumn. According to the different degree of opening of hibiscus branches, it can be divided into upright type and open type. Erect hibiscus branches have small incident angle, nearly erect, strong germination ability, relatively poor branching ability and are not tolerant to long-term growth. It can be cultivated and transformed into a tree with non-layered trunk, with 3-4 main branches left on the trunk and the rest sparse, and each main branch can leave 1-2 side branches, which is called the trunk happy shape.