First, jasmine habits Jasmine flowers are generally propagated by cutting, and can also be divided into layers. Cutting was carried out from April to 65438+ 10, with one-year-old mature branches as cuttings, and roots were born 40 ~ 60 days after cutting. Potted jasmine flowers in summer should be watered every morning and evening; During the winter dormancy period, it is necessary to reduce the number of watering and control the amount of watering. Apply dilute liquid fertilizer once a week during the growing period. In spring, you should always pick your heart and shape it, and then cut it after flowering to promote the germination of new branches and make the plants robust, plump and flowering. In early June, jasmine flowers bloom one after another, but these flowers are generally very small and few, so they need to be picked in time, otherwise they will consume too much nutrients, affect the quality and quantity of their later flowering, delay the flowering period and affect the appreciation. The method of picking flowers is to pick the tender branches with leaves, so as to promote the new branches to germinate again and flourish. At this time, light fat water is applied twice a week to keep the basin soil moist. Late June to early July is the first stage of flowering. At this time, it is necessary to strengthen the management of fertilizer and water, apply thin fertilizer frequently, apply/kloc-0 every two days, and apply fully decomposed organic liquid fertilizer, with the ratio of fertilizer to water of 1: 4. Watering should be sufficient, generally 2 days 1 time. Usually watering should be done in the morning and fertilizing should be done at night. This situation will last until the end of July. Due to abundant fertilizer and water, bloom has a great harvest. In early August, the second stage of flowering, when fertilization is slightly thicker than before, it is generally appropriate to divide fertilizer and water equally. In order to promote jasmine to bloom better, calcium superphosphate solution can also be sprayed on the leaves. By the end of August, fertilization was gradually reduced, and 1 time was applied for 6 to 7 days, but more water was needed, and 1 time was maintained for 2 days. From early September to early 10, the third stage flower is formed. At this time, fertilization should be stopped and the amount of watering should be gradually reduced. Because the weather has gradually turned cold, which will affect the formation of flower buds, the number of these flowers is small, and the flowering will end after the middle of 10, and the pot soil can be kept slightly wet.

Two. Measures for the administration of jasmine cultivation

1, environment and illumination Jasmine likes hot, humid, ventilated environment and needs plenty of illumination. Molly is afraid of cold. Potted jasmine in the south can be cultivated outdoors for the winter. In the north, keep warm in autumn and winter, move indoors and put it in the south direction. Strong sunlight makes branches strong, leaves dark green and flowers more fragrant, while insufficient sunlight makes flowers less fragrant.

2, water jasmine is not drought-tolerant, but it also avoids water accumulation. In the rainy season, the accumulated water in the basin should be poured out in time, otherwise the leaves will turn yellow easily. Water the leaves twice a day on a hot sunny day in summer, once in the morning and once in the evening. If you find the leaves drooping, spray water on them to promote growth.

3. Soil cultivation Jasmine should be fertile sandy and semi-sandy soil. When planted in slightly acidic soil with pH value of 6-6.5, the root system will be dense and grow vigorously. If the soil is sticky, lacks matrix, has low fertility and poor ventilation, there will be fewer roots, short plants, slender stems and leaves, and few and small flowers.

4. Fertilization The high temperature season in midsummer is the peak of jasmine growth. Apply more organic fertilizer and phosphorus and potassium fertilizer, such as peanut cake powder, bone meal, calcium superphosphate, multi-element flower fertilizer, etc., twice a month. In summer, jasmine is often leafy but does not bloom. The main reason is that too much nitrogen fertilizer is applied, resulting in too many branches and leaves. In this case, it is necessary to control fertilizer and water, apply more phosphorus and potassium fertilizers to promote germination, and at the same time pay attention to moving jasmine to a sunny and well-ventilated place.

5. Pruning jasmine grows very fast in summer, so it should be pruned in time. The base of potted jasmine is 10cm ~ 15cm, which will promote most stout new shoots. For example, new shoots grow vigorously, and when they grow to 10 cm, they should be pruned to promote the growth of secondary branches, which will lead to more flowers and compact plant types. After the flowers wither, the branches should be cut off in time to reduce nutrient consumption, which is also conducive to promoting the growth of new shoots, making the branches dense, with more buds and more flowers.

6. Pest control Jasmine often suffers from moth larvae, scale insects and red spiders. July-September is the worst, and buds are often eaten. You can spray universal powder or pyrethroids with 200 times of water every half month, and even if there are no pests and diseases, it can prevent pests and diseases. Spraying time should be at 9: 00 a.m. and 4: 00 p.m. on sunny days, and it is not advisable to spray in the hot sun at noon to prevent phytotoxicity.

7. Don't spray water on the flowers during flowering to prevent premature flowering and fragrance loss. When it rains, move the potted jasmine to a shelter.

Third, the propagation technology of jasmine

1. layering propagation layering propagation is to use the branches sprouting from the lower part of jasmine plants or branches with a certain length to press the middle part into the soil to make them grow new roots and become independent new plants after cutting off the mother branches. The premise is that there must be a mother tree of jasmine, and each mother tree can press a small number of branches, which can not meet the large supply of seedlings. Generally, potted plants and ponds are used to replenish seedlings.

2. Jasmine is a tufted shrub, and its rhizome can produce many adventitious roots. Plants over two years old often have several stems and branches, which can be propagated by dividing plants. The premise of this method is that there must be a biennial jasmine mother tree. Moreover, the number of reproduction is lower than that of layering and cutting, which can not meet the needs of large-scale cultivation.

3. Cuttage propagation Cuttage propagation seedbed seedlings occupy less land, and the land utilization rate is high, and about 654.38+million seedlings can be propagated per mu. Centralized cutting in nursery is widely used in production because it is easy to manage, has enough space for selecting seedlings, has high quality and neat growth, and is suitable for mass production of seedlings.