According to the growth habits of roses, careful conservation can make the roses flourish and beautiful. Specific practices are as follows: 1. Planting in sunny, ventilated, fertile soil, well-drained areas, the soil to a neutral to acidic light loam is better. 2. Apply sufficient organic fertilizer to the planting hole as a base fertilizer before planting, and then apply 4 additional fertilizers each year: precipitating fertilizer (between 2 and 3 months), promoting flowering (before flowering), and post-flowering fertilizer (after flowering) Wintering fertilizer (falling leaves before winter). Potted roses also require a decomposed liquid fertilizer every 10 days during the growing season. 3. The ground rose is usually watered properly in early spring and when the weather is dry, and watering is needed every day in summer. 4. In the flowering period of roses, flowers that have just been opened into rings should be picked in time in the early morning (because the number of flowering increases with the increase of the number of flower pickings). If you do not pick flowers, you can only open flowers once a year. 5. Pruning of the plants before or during dormancy every year to maintain the vigorous growth of the plants.
Uv absorbers are the most widely used light stabilizers, which can be divided into salicylate, benzophenone, benzotriazole, substituted acrylonitrile and triazines according to their structure. The most widely used light stabilizers are benzophenone and benzotriazole in industry. Quench agent is mainly metal complex, such as divalent nickel complex, and often used with ultraviolet absorber, play a synergistic effect.
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