Key points of autumn cutting of woody flowers

Camellia, Michelia, Rhododendron, Osmanthus fragrans, Snow and other woody flowers can also be pruned in autumn. The results showed that compared with other seasons, the survival rate of autumn cuttings was higher, generally around 80% ~ 90%. The following points should be paid attention to when cutting woody flowers in autumn. First, the cutting time. The period from cold dew to first frost, that is, the middle and late period of 10, is appropriate.

Second, cutting selection. Cutting requires young seedlings and low lignification, that is, choose strong and tender branches that change from green to brown as cutting. Such cuttings are nutritious, have strong regeneration ability and are easy to take root. The cuttings are 5 cm ~ 10 cm long, leaving 2 ~ 3 leaves on the upper part. The burial depth is 1/3 ~ 1/2 of the length of cuttings.

Third, cut the soil. Sandy loam rich in organic matter is the best, with acidity, loose soil and good drainage and ventilation. Do not use clay as soil for bed insertion.

Fourth, management after insertion. This is the key to the success or failure of cutting. Pour water after insertion, and cover the bed with transparent plastic film for heat preservation and moisture retention. Avoid direct sunlight when inserting the bed. 1 week can be sprayed on the leaves, and then keep the soil moist. After 20 days, if it is observed that the cutting leaves are thick, straight and bright green, it means that the cutting seedlings have survived. After about 40 days, 2 ~ 3 young roots can grow from internodes. It is winter at this time, so we should pay special attention to keeping warm and preventing cold wind. The bed should be moved indoors to keep the bed temperature above 5℃ ~ 10℃. In March of the following year, after the temperature rises, remove the border film, give the cuttings proper light, keep the soil moist, and apply thin fertilizer. When the seedlings grow 6 ~ 7 in the first half of April, they can be transplanted into pots.

Family Maintenance of Flowers in Autumn

After autumn, the temperature gradually drops and the sunshine weakens. For many people who like to grow flowers, it is necessary to conserve flowers according to the climate characteristics of this season, so that they can spend autumn and winter smoothly.

The first is to enter the room to keep warm. In this season, most woody flowers, bonsai and perennial herbs in the south have to be moved indoors, such as banyan, hibiscus, poinsettia, begonia, cyclamen, tortoise shell bamboo, Liriodendron chinense, African jasmine, Milan and rubber trees. Because with the increase of temperature difference between day and night and the decrease of temperature at night, perennial flowers will convert chlorophyll into anthocyanins and carotene in this case, leading to the removal of folic acid. Although plants will not die, they will also cause a large number of fallen leaves or yellow leaves, which will lose the ornamental effect.

Second, water and fertilizer are suitable. Potted flowers grow slowly in autumn. At this time, most flowers should start to control the amount of watering and stop fertilizing, so as to avoid too much water rotting roots and too much fertilizer leading to white branches and leaves. For flowers that bloom around the Spring Festival, such as cyclamen, clivia, crab claw orchid, camellia, rhododendron and so on.

At this point, we have passed the dormant period and started to enter the peak season of growth. Therefore, after autumn, it is necessary to strengthen the management of fertilizer and water, and appropriately increase the application of phosphorus and potassium fertilizers to facilitate the formation of flower buds.

Third, timely breeding. For annual herbaceous flowers, attention should be paid to the collection and preservation of seeds. Some biennial flowers, such as pansy, carnation, chrysanthemum, hollyhock, etc. It is a good time to sow. Pay attention to spraying water after sowing to keep the soil moist. There are also some woody flowers suitable for cutting in autumn, such as roses, geraniums and jasmine. The survival rate of cutting in autumn is high. Perennial flowers, such as Paeonia suffruticosa and Paeonia lactiflora, which grow densely and need to be divided into plants, should be divided into plants and propagated in time. Flowers that bloom around the Spring Festival, such as hyacinthus orientalis, tulips and Zhu Dinghong, should be brought to the pots as soon as possible.

The fourth is reasonable pruning. Most flowers such as jasmine, crape myrtle and pomegranate can be trimmed and reshaped in autumn, which can reduce the consumption of nutrients in winter and promote the flowering of potted flowers in the second year. When pruning, remove diseased branches, dead branches, over-dense branches and long branches to lay a good foundation for potted flowers to overwinter.

The fifth is to prevent and control pests and diseases. Autumn is an important period for flower pest control. Potted flowers can be sprayed with drugs before entering the room to prevent overwintering pests and diseases.

Application of all-light spray cutting seedling raising technology in flowers

For many excellent flower varieties with great value and difficult to take root, the conventional cutting seedling raising method not only consumes a lot of manpower and material resources, but also has slow propagation speed, low survival rate, small quantity and short supply. In order to improve the survival rate of cutting and reduce the cost of flowers, we adopted the full-light spray cutting seedling raising technology, which effectively solved the problem of difficult rooting of flower varieties, and the survival rate reached over 95%. At the same time, it also shortens the cultivation cycle of mass production of flowers and has considerable economic benefits. The specific methods are summarized as follows: 1, establishment of transplanting bed and installation of equipment.

The bed insertion should be in a place with flat terrain, good ventilation, sufficient sunshine, convenient drainage and close to water and power supply. According to the radius of .6 m and the height of 40cm, make a circular slotting machine with high middle and low periphery. Leave a drain at the bottom every 1.5m, and install an all-optical automatic intermittent spraying device introduced by the Science and Technology Information Center of the State Forestry Administration in the center of the slotting bed. The device consists of a foliar moisture controller and a symmetrical double long-arm circumferential scanning spraying mechanical system. Under the bed 15cm pebbles, 25cm thick river sand. Before mowing, spray the seedbed with 0.2% potassium permanganate or 0.0 1% carbendazim.

2. Insertion time

From the end of May to the middle of September.

3. Cutting varieties

There are more than 0/0 species of woody and herbal flowers such as bougainvillea, jasmine, Milan, rubber tree, Dutch begonia, hibiscus, rose, chrysanthemum, safflower, marigold and snapdragon.

4. Cutting and machining

When cutting woody flowers, annual semi-lignified shoots with leaves are used as cuttings, and when cutting herbaceous flowers, tender stems with leaves are used as micro-cuttings. When cutting, first cut off the shoots at the top of the new shoots, then cut the cuttings into 8- 10cm, leave more than 2 buds at the top, and cut off the leaves on the cuttings. Only one or less leaves are needed for larger leaves, and the cutting area is generally about 10, and 2-3 leaves are needed for smaller leaves. Note that the upper incision is flat and the lower incision is slightly inclined. Bundle every 50 leaves. Before cutting, the cuttings or their parts were soaked in 0.0 1%-0. 125% carbendazim solution, and then the base was quickly dipped in ABT rooting powder No.65438 +0.000 x 10.

5. Logging and post-logging management

The cutting depth is 2-3 cm, and the cutting density is 400-500 plants/mu. Spray 1 times water permeability immediately after cutting, and spray 0.0 1% carbendazim solution in the morning and evening the next day to avoid infection. After that, spray every 7 days 1 time. When rooting begins, spray 0. 1% potassium dihydrogen phosphate. Spraying 1% potassium dihydrogen phosphate after rooting promotes root lignification. At the same time, clean the fallen leaves on the seedbed at any time.

Using this technology to raise seedlings, bougainvillea, jasmine and Milan began to take root after 25-30 days, and the rooting rate reached over 90%. After15-20 days, Hevea brasiliensis, hibiscus, Rosa rugosa and Begonia Netherlands began to take root, and the rooting rate was over 95%. Chrysanthemum, salvia miltiorrhiza, marigold and snapdragon took root in 7- 10d, and the rooting rate was over 98%.

Step 6 transplant

The transplanting time should be after 5: 00 pm and before 10: 00 am, and it can be transplanted all day on cloudy days. In order to improve the survival rate of transplanting, water should be stopped for 3-5 days before planting, and seedlings should be transplanted with them. After transplanting, put the flowerpot under the sunshade net, water it for the second time after 7 days, and gradually move it to the sun for daily management and cultivation after 15 days.

Flowers that come into the room in autumn have yellow leaves, which can be solved with one move.

It's autumn in a blink of an eye, and the weather is getting cold. We will keep the flowers and plants raised outdoors indoors, but when plants enter indoors, they often show signs of yellow leaves or even death. Don't panic at this time!

Generally, yellow leaves are mainly caused by water shortage. For the maintenance of family potted flowers, due to the limited space in the flowerpot, the roots can not extend to other places, and the water in the flowerpot is insufficient. If you are short of water for a long time, you will have symptoms such as yellow leaves and withering.

Correct approach

First, move the yellow-leaf plants that are short of water to a cool and ventilated place;

Secondly, spray a small amount of water on the leaves of the flowers and pour a small amount of water around the roots.

Then, while observing the changes of plants, slowly increase the amount of watering.

When this happens, someone will water it in a hurry. But this practice is wrong and must not be done. Instead of saving plants, this may lead to the death of flowers. Because the water absorption of roots is reduced at this time, the water absorption of plants can be slowly restored only after the roots are restored.

In addition to water-deficient yellow leaves, due to the gradual cooling in autumn, more care should be taken in fertilizer management to avoid causing more harm to them.