1. Cultivation techniques of hibiscus?

1. The biological characteristics of hibiscus flowers are that they like sunny, warm and humid climate and are not tolerant of drought. It should be planted in sandy loam with good drainage. ?

2. Cultivation techniques of hibiscus: cutting, dividing plants, sowing and propagation. Cutting propagation is widely used in production: in warm climate areas, cuttings are directly cut from the mother plant in February-March and inserted with the cuttings. In areas with cold climate in winter, the branches of 65438+ 10 were cut from September to June, stored in the cellar, taken out from March to April the following year, cut into cuttings 17-20 cm long, and directly inserted into planting holes, with 2 branches in each hole, 3-4 cm above the ground, and covered with rotten leaves. After survival, leave seedlings per hole 1 plant. Propagation by dividing plants: before germination in spring, dig out plant clumps, divide buds and transplant with roots. Sowing and propagation: 1 1- 12 picking mature fruits, drying and threshing, dry storage, sowing and seedling raising in March-April of the following year, shallow furrowing with row spacing of 20-25 cm, evenly sowing in the furrow, covering with thin soil and grass, and emerging in about 15 days. The height of the seedlings is about 7cm, the seedlings are fixed at 16- 17 cm, and the plant spacing is 10- 12 cm. After 1 year seedling raising, it can be planted out of the nursery. ?

3. Field management of hibiscus: After planting the plants with cuttings and ramets, weed 1 time in summer and winter every year, properly cultivate the soil in winter, and combine with topdressing for 2-3 times. In spring and summer, apply human and animal manure or chemical fertilizer first. After picking flowers in autumn and winter, you should open holes or circular ditches next to the plants and apply compost, manure or garbage manure. ?

Second, the cultivation methods and precautions of hibiscus flowers?

1, temperature?

Mufurong likes warm, humid and sunny environment, and is slightly tolerant to semi-shade and has certain cold tolerance. In winter, it is moved indoors for overwintering, and the temperature is maintained at 0 ~ 10℃ to ensure its dormancy. ?

2. soil?

The requirements for soil are not strict, but it grows best in fertile, moist and well-drained sandy soil. It can be planted in the sunny place of the courtyard or by the pond. ?

3. Water and fertilizer management?

Usually, the management is extensive, so pay attention to watering in case of drought. Every winter or spring, we should ditch around the plants and apply some decomposed organic fertilizer, and water and seal the soil in time after fertilization. The buds of some plants planted in cold areas will freeze to death in winter, so don't worry. When the temperature gets warmer in spring, new branches will come out. ?

Third, the pest control of hibiscus flowers?

Shield?

Spray 80% dichlorvos EC 500 ~ 900 times or 50% cartap EC 1000 times 1 ~ 2 times. ?

Aphid?

Dimethoate or omethoate oxide can be sprayed 1000 ~ 1500 times or 2.5% rotenone 1000 ~ 1500 times every 7 ~/0 days, 2 ~ 3 times. ?

Starscream?

20% triadimefon 800 times solution, dicofol emulsion 2000 times solution, 1 times solution, every 7 ~ 10 days, 2 ~ 3 times. ?