Cutting time: spring and autumn. In spring, when the buds are not germinated but are about to germinate, or after flowering. Autumn can be carried out in September-10 or combined with plastic pruning. Cutting in this period has the advantages of fast rooting, easy management and high survival rate.
The cuttings should be chemically treated before cutting. A certain concentration of plant growth stimulator can promote the early growth and rapid development of cuttings and improve the survival rate. In production, 50PPM NAA or IBA is usually used to prepare a solution, and the lower end of the cutting is cut and soaked for 3-5 hours.
Preparation method of 500PPM solution: dissolve 1 g NAA powder in 30 ~ 50 ml of alcohol, and then pour it into 200 kg of clear water for dilution. The solution prepared by 1 g NAA can treat 5000 ~ 10000 cuttings. Seedbed management after sowing: at the initial stage, proper shading should be done, and the light should be seen in the morning and evening for about one month, and then shading should be done under the condition of direct sunlight at noon until it takes root; In the early stage of cutting, in order to ensure the humidity in the air, excessive air circulation should be avoided. A cut healing tissue has been formed. When you start rooting, you should pay attention to ventilation to promote the rapid growth of rooting; Irrigation, watering once in sunny days and once in the evening within one week after transplanting (except plastic film seedling raising method). In the future, depending on the weather and soil conditions, water or irrigate as appropriate to keep the surface moist; Pay attention to ditch cleaning and drainage in rainy days. In the hot and dry season, in addition to watering twice in the morning and evening, water should be properly sprayed at noon.
When the cuttings form healing tissue: after the cuttings form healing tissue, the number of spraying water on the seedbed should be reduced, and care should be taken not to make the soil too wet, because too wet and too dry will also rot the roots; Fertilization: apply dilute liquid fertilizer 2-3 times before and after flowering; The root system of weeding and cutting seedlings is shallow and few, so it is best to pull the grass by hand to avoid damaging the root system. If the grass grows too high, the roots will be deep, and it is easy to damage the roots of flower seedlings when pulling. Water immediately after pulling weeds, so that the soil is closely connected with the root system of seedlings, and pay attention to cultivating the soil to prevent the root system from being exposed.