Planting conditions: The requirements for soil are not strict for the planting of roses. Moderate alkaline or slightly alkaline soil is the most suitable, and slightly acidic soil can also be used. Roses like light, sunshine, cold and drought. It should be planted in fields with sunny ventilation and good irrigation and drainage conditions, as well as in fertile loam on the edge of the ground. Roses should avoid low-lying and waterlogged areas. When waterlogging occurs, the lower leaves turn yellow and fall off, and even the whole plant dies. The flower bud and germination of roses need an average temperature of more than 7 degrees.

Planting method of roses:

First, land selection and soil preparation: Rose is drought-tolerant, and loam or sandy loam with sufficient sunshine, high and dry terrain, loose and fertile soil and good drainage should be selected. Apply 3000kg/667m2 compost, turn it over for 20-30cm, and then level it.

2. Dig the pit according to the row spacing of 1.5-2m, the plant spacing of 0.6-0.8m and the hole depth of 15-25cm; The hole diameter is 30-40cm, the bottom layer is dug loose, a proper amount of soil mixed fertilizer is applied, 5cm fine soil is covered, the grafted rose seedlings are planted in the hole, the roots are leveled around to make them stretch, then the soil is covered and the root water is poured thoroughly.

3. Germination fertilizer, mainly nitrogen fertilizer; Fertilization after flowering, mainly nitrogen fertilizer after flowering, combined with phosphorus and potassium fertilizer; In autumn, base fertilizer should be applied after defoliation and before soil freezing, and it should be applied early, mainly organic fertilizer.

Four, watering points: watering should master dry watering and wet drainage, and large and small seedlings should be planted after roots. The physiological activity of rooting needs sufficient oxygen and suitable water, and planting needs sufficient water and suitable oxygen. It's rainy and windy, so we should water the seedling field, loosen the soil after watering, and then we should master the dryness and wetness of the soil, the size of the seedlings and the amount of rain.

Field management: intertillage weeding. Weeds should be pulled out by hand at seedling stage, and the intertillage should be shallow to avoid damaging the roots. During the growing period, this land should be kept free of weeds.

The common diseases of extended information are black spot and powdery mildew, which are unavoidable for ordinary flower farmers and individuals. Therefore, special attention should be paid to the prevention and management of pests and diseases, and keeping plants strong will resist the invasion of natural cultivation techniques. Before planting large and small seedlings, disinfection should be done according to the actual situation of greenhouses and soil.

Roses have a strong ability to germinate. If they are not pruned in time, the branches will often become thinner and die because of closed clusters. Pruning should be carried out according to plant age, growth condition, fertilizer and water and management conditions, with thinning as the main method and short cutting as the supplement, so as to achieve the purpose of not aging old branches, not dense branches, ventilation and light transmission. Roses that are weak and basically lose their flowering ability can be pruned again to promote the growth of new branches.

The harvest time of roses is different, and the yield and quality are also very different. Usually, the rose bud should be picked before opening, that is, when the longitudinal diameter of the bud is three times that of the calyx, the yield will drop too early, and the quality will be affected if it blooms too late. Concentrate on the flowering period, choose strong and full buds to pick, and other delicate buds will pick petals after they are completely open. Flowers that bloom sporadically at other times should be picked after the petals are completely open.

References:

Baidu encyclopedia? rose