Propagation, cultivation and pest control of cherry blossom trees

Cherry blossom is a kind of tree species with high ornamental value and an important ornamental tree species in garden. Cherry blossoms belong to deciduous trees of Rosaceae, with the characteristics of luxuriant branches and leaves, green shade and full blossoms. Cherry blossoms have a long history of cultivation in China. Let's take a look at the main points of cherry tree reproduction, cultivation and pest control.

1. Ecological characteristics

Cherry blossoms are native to the Yangtze River Basin in China and like warm, humid air and sunny environment. Resistant to cold, drought and fear of stagnant water. The suitable temperature for growth is 13-18 ℃, and it can withstand low temperature of-10 ℃ in winter. The soil should be sandy loam with deep, fertile and good drainage, and the saline-alkali soil should avoid smoke damage.

2. Reproductive skills

Cuttings: use hardwood cuttings in spring or softwood cuttings in the rainy season, treat the base of cuttings with 0.3% 0.5% indolebutyric acid solution for 1 / 2 seconds, insert sand bed spray and maintain high air humidity. The rooting and survival rate was high 20-30 days after insertion.

Grafting: the seedlings of cherry and mountain cherry are commonly used in rootstocks from March to April in spring or buds from July to August. The grafted seedlings were transplanted and planted for 3 ~ 4 years after survival.

3. Main points of cultivation.

Choose sunny, deep soil, fertile, well-drained places to plant, the most afraid of stagnant water. Basal fertilizer was applied before planting, topdressing once in early spring and once after anthesis. It is generally not pruned in the process of cultivation, and it is necessary to cut off withered branches, diseased and weak branches and long branches after flowering and before germination in early spring, so as to keep the crown complete.

4. Disease and pest control

The harm of perforation disease often occurs, which can be sprayed with 600 times of 70% mancozeb wettable powder. Pests are harmful to red spiders, stinging moths, shell insects and military insects, which are sprayed with 1500 times of 50% fenitrothion EC.

The above are the key points of cherry blossom cultivation techniques, the contents are for reference only. If you want to know more about agricultural technology, please follow Huinong School!

What do you need to pay attention to in cultivating cherry blossoms? Key points for attention in cherry blossom cultivation

The season of cherry blossoms is coming soon, and the beautiful cherry blossoms are deeply loved by people, so what do we need to pay attention to in cultivating cherry blossoms? The following are the key points for attention in cherry blossom cultivation.

1. Keeping the soil breathable cherry blossoms are shallow root positive tree species, and 60% of their roots are distributed within 60 cm of the surface, and mainly in the 20 cm topsoil layer. Therefore, the planting land must choose open and sunny land with good drainage, loose soil and good ventilation, avoid stagnant water and dryness, and avoid people, animals and vehicles stepping on the soil around the tree, especially in the distribution range of the root system, which will compact the surface layer of the soil. affect the growth of roots, shorten life, and even lead to death.

two。 Fertilizing cherry blossoms grow faster and blossom densely, so it is necessary to apply fertilizer twice a year, and acid fertilizer is better. Once in winter or early spring, bean cake, chicken manure and other mature organic fertilizer; the other time after falling flowers, ammonium sulfate, ferrous sulfate, calcium superphosphate and other available fertilizers.

3. Wound disinfection after the branches of cherry blossoms are injured, the wound heals slowly. According to this characteristic, the pruning of cherry blossoms should be especially cautious, and some overlapping branches, disease and insect branches should be pruned mainly. After pruning, it is necessary to disinfect the wound with medicine in time to prevent rain, germs invading the wound and decay, and the effect of antiseptic is better.

4. Avoid continuous cropping, such as cherry blossoms or similar species and genera of Rosaceae such as peaches, plums and plums, which will seriously affect their normal growth, so cherry blossom nursery sites should pay special attention to the species of previous plants. Adopt the method of soil improvement and change the soil with rotten leaf soil and peat.

5. Cross-pollination is the main way for the formation of cherry blossom varieties, and even intergeneric hybrids can be formed. We should make full use of this characteristic to select more and better cherry blossom varieties.

Extended reading:

Cherry blossom pest control, flowering period, cherry blossom propagation techniques and cultivation techniques

Forecast of annual diseases and insect pests of garden trees in January 2011

1. Climate characteristics in January: dry and cold, little or no rain, foggy. Warm winter is beneficial to the overwintering and reproduction of diseases and insects.

2. The occurrence of diseases and insect pests in this month: the main affected varieties in this month are fine-leaf banyan thrips, yellow banyan hanging filariae, scale insects, safflower, white orchid aphids and scale insects. Crape myrtle heart borer. Willow canker.

3. The main diseases and insect pests in January and their control methods: there are aphids, thrips, scale insects, heart borer, powdery mildew, brown spot and so on. The control methods can be sprayed with 800 times of omethoate plus dichlorvos and topiramine. The heart borer can be poisoned with omethoate and water 5 to 10 times, and the damaged branches can be cut off and burned in a safe place.

4. Key points of cultivation and management: winter pruning: comprehensive pruning of deciduous trees; pruning of withered branches, damaged branches, disease and insect branches on large and small trees. This month to wet and moisturize, loosen the soil and clear the garden. Cut off dead branches and dead trees in time.

5. Do a good job in sanitation and cleaning and remove garbage in time.

6. For the scale insects which are difficult to control, the 1000-fold solution of killing scale can be used to control the scale insects, and many kinds of insect pests can be controlled at the same time.

February

February: the temperature is higher than the previous month, and the trees are still dormant.

1. The maintenance is basically the same as in January.

2. Pruning: continue pruning the dead and diseased branches of Platanus acerifolia and large and small trees. Trim all kinds of trees before the end of the month.

3. Pest control: continue to control diamondback moth and scale insects.

March

In March, the prevention and control of diseases and insect pests should be mainly aimed at the overwintering generation.

1. Warm winter will increase the activity of overwintering larvae of insect pests. The control of overwintering pests should be one of the key points of pest control in March. Among the pests that overwinter with mature larvae, the following two kinds of pests should be paid attention to:

1. Plutella xylostella overwinters as mature larvae in the sac, mainly in camphor, cherry blossoms, cypresses, sweet-scented osmanthus and other trees. when the overwintering ends in March, it will begin to harm the tree leaves and pupate at the end of March. Therefore, the insect cyst should be removed at the beginning of March.

2. Beetles, overwintering as larvae (grubs) in the soil, are mainly distributed in cover plants such as Ophiopogon japonicus, onion orchid and lawn rhizosphere soil. The damage will begin in March and pupate from April to May, so it should be combined with ploughing and turning the soil to reduce the cardinal number. it is very good for follow-up control. Ground damage level can be used for prevention and control.

Another focus of prevention and control in February and March should be on the prevention and control of aphids. The rise in temperature in March will lead to the proliferation of aphids. It has been found that aphids are harmful to a variety of plants, such as coral, big-leaf yellow poplar, firethorn, Haitong, red-leaf plum, peach and so on. All conservation units should pay close attention to prevention and control to avoid unnecessary losses. The control can be sprayed with imidacloprid (once clean) or pyrethrin (not too often used and easy to produce drug resistance).

Third, due to the temperature, the overwintering larvae of the yellow poplar silk wild borer do not begin to feed, but there are sporadic occurrence and different instar periods, and the activity increases at the beginning of March, so it should be controlled as soon as possible to prevent the outbreak of the next generation. It is expected that the first generation will occur at the end of March. Attention should be paid to observation and timely prevention and control. Spray of pyrethroids and BT insecticides are available for prevention and control.

Fourth, powdery mildew, powdery mildew can infect the seedlings of woody flowers such as rose and rose. The disease mainly occurs in leaves and also harms tender stems, flowers and fruits. There are also sporadic phenomena in the narrow leaves of the top ten and big leaves of Populus tomentosa. With the rise of temperature, there is a great possibility of occurrence. 1000-1500 times liquid of Penicillium or 1500-2000 times liquid of Tianwei No. 3 can be sprayed every 10-15 days for 2-3 times in a row, and combined with pruning to cut off the branches and leaves of diseases and insects.