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2. Cultivation management. First select the hardy species suitable for planting in the north.
(1) Fertilization. Because the rose is fertilizer-friendly, when it is planted, sufficient organic manure, ie, farmyard manure, is applied as a base fertilizer, which is applied twice a year. Every October, the fertilization can play a role of insulation, adequate supply of plant nutrients, and multiple new shoots. Fertilization will be promoted in February of next year. Branches are thick, flower buds are hypertrophic, flower buds are hypertrophic, and flowering is numerous. The flowering period is from May to November, so the flowering period can be applied according to the color of flowers and leaves at any time.
(2) Moisture. In early spring, roses have sprouted one after another, and they should be fully watered to facilitate the timely delivery of nutrients to plants, promote flower bud differentiation, and extend flowering time. Control the watering during flowering in summer, this is the secret of opening a good flower, keep the soil moist, not water, otherwise the lower leaves will fall yellow, timely drainage in the rainy season.
(3) trim. Pruning in production management is divided into flowering pruning and dormant pruning. Flowering pruning: After the first batch of flowers is harvested and cut, cut at 15 to 20 cm above the base of the flowering branches to promote new shoots, and the second flowering is more and better. Dormancy period: Keep strong and strong shoots before germination in early spring. Cut and retain 1 to 2 side branches at 40 to 50 cm from the ground. Leave 2 buds on each side branch.
(4) Rhizosphere soil. 80% of the roots of the roses are horizontal roots. It is very important to cultivate the base of the rose after deciduous rose or in early spring. The thickness of the cultivated soil is generally 4 to 8 cm. This thickens the soil layer of the flower and promotes the growth of the root system. After the grass is rotted in the soil, soil humus is added and the diseased leaves are buried in the soil, which also reduces the spread of germs.
(5) Breeding. Mainly seed seed, ramets and cuttings are the main ones. Propagation with seeds requires harvesting of fruit in the fall of the first year for sand storage, sowing the open soil before freezing and planting in April the next year. Branch cuttings can be carried out during the rainy season. The cuttings are selected from mature mature branchlets with a diameter of about 0.6 cm. The young shoots are removed and cut into 15 cm lengths with 2 or 3 buds. The depth is 5 cm directly and the watering is done once.
3. Pest control. Prevention is better than cure. Maintaining robust growth of roses can increase plant resistance to pests and diseases. Constraints on excessive use of nitrogen fertilizer, plant length, and easy to infect pests and diseases; pruning roses to keep the center of the plant fully developed, favorable ventilation, light transmission; disease branches once cut off in a timely manner, while using alcohol or bleach solution to sterilize the pruning tool; special years When the pests and diseases are serious, chemical control measures can be taken appropriately.
Rose cultivation method
1. Characteristics. The rose is a perennial plant of the Rosaceae genus, which is brightly colored. Suitable for growing in most areas of China, suitable for growth in fertile, well-drained slightly acidic soil; hi light, cold, drought, water and wet, not shade.