What are the shortcut pruning methods for seedlings? The shortcut pruning methods of seedlings are light cutting pruning. When the light cutting pruning method is adopted, only the top of the seedling branch needs to be cut off. In general, it is best not to exceed one-fifth of the total length of seedlings. The purpose of pruning seedlings is to make some flower and fruit seedlings stronger. Generally, after cutting off the top, the germination of the lower buds of the seedlings is removed again to disperse the concentrated nutrients on the branches and promote the growth of short branches.
There is also the pruning method of heavy and short cuts. The so-called heavy and short cut is to remove more than half of the original branch length. Cut off almost 80% of the branches and have a look. This will make the * * * function of plant growth more powerful. Generally, pruning will be carried out on the vegetative branches with the strongest germination and development. The main purpose is to make the weak trees and branches of seedlings renew and rejuvenate faster.
What are the basic methods of fruit tree pruning? What do you mean by chopped fruit trees? Several pruning methods are as follows
1, shortcut
Is to cut off some annual branches. After the branches of fruit trees are cut short, the lateral buds can germinate. For example, in order to form more short and medium branches, increase the total growth, relieve tree vigor and promote flower bud formation, the branches of 1/4 or 1/3 can be cut off.
A light and short cut; In order to rejuvenate trees and make use of them
After cutting, more medium-long branches with high branching ability and strong growth potential can be formed, and the full buds in the middle and upper parts of the branches can be cut off at 1/3 or 1/2.
Middle section and short section; It can be used to shrink trees, cultivate branches, transform long branches, compete for branches, or reduce branch position and ease tree vigor. It can be used to cut off 2/3 or 3/4 short branches or leave 2~3 shriveled buds at the base of branches.
2, thinning branches
Is to cut branches from the base. Generally, it is to facilitate ventilation and light transmission, promote tree health and flower bud differentiation, sparse branches are too dense, cross, overlap, competition, white growth, withered, pests and diseases.
3. Shrinkage and shearing
That is, retraction pruning means cutting off perennial branches. Shrinkage will reduce the total growth of the whole tree and weaken the tree potential. It is mainly used to control the crown, change the perennial head, change the extension direction of branches and renew old trees.
4. Slow release
Is to let the annual vegetative branches grow naturally without any pruning. The slow release of branches is beneficial to the accumulation of nutrients and the formation of flower buds. In order to make young trees and flourishing trees bear fruit early, it is often necessary to slow down the trees.
5. The buds are sharp and thin
That is to say, erase buds or sparse and too dense new buds. Brushing buds and thinning branches can survive the fittest, save nutrients, improve illumination and improve the quality of branches. Often used in oranges.
Cultivation of citrus and grapes, removal of rootstocks and grafting of tillers, regeneration of old trees, etc. Using the compound buds of citrus branches, the technique of wiping buds and thinning branches can make the basal shoots strong, increase the number of buds and make the crown short and compact, which is the main measure of "short, dense, early and abundant" cultivation.
6. Choose your heart
Is to pick off the top of the bud. Nucleation can inhibit the growth of new shoots, promote bud branching, facilitate the early maturity of branches, and make nutrient accumulation promote flower bud differentiation. For example, in order to promote the growth of secondary branches, you can pick the core in the new shoot for a long time; In order to promote flower bud differentiation, the core can be picked in the slow growth period of new shoots.
7, girdling, girdling
Cut the bark into xylem with scissors, and those that are not peeled are called ring cutting; Peeling is called girdling. After girdling the branches of fruit trees, nutrients are relatively accumulated in the upper part, which promotes reproductive growth, is conducive to the formation of flower buds and improves the fruit setting rate. This method is usually used for young and strong trees.
8. Twist the tip and take away the branches
Twisting the tip is to twist the new tip growing vertically at the base by 90 ~180 o.
; Holding branches by hand is to bend branches one by one by hand. Twisting the tip and picking the branches are all for the sake of slowing down the new.
The growth of new shoots, increase germination rate, promote the formation of short branches and flower buds, improve fruit setting rate and promote fruit growth, in general, in order to achieve early fruiting and high yield of young and strong trees.
What are the breeding methods of Chinese rose? The propagation of rose is mainly asexual propagation, which can be adopted by cutting, grafting, dividing plants and layering. Cutting and grafting are the most widely used.
In the cutting propagation of Chinese rose, we should first prepare for the hotbed of cutting. We should fill the hotbed with hot things, such as horse manure or leaves, and water and compact it, which will produce a certain amount of heat. Cut semi-lignified inverted branches from the mother plant of Chinese rose, and the length is about 10 cm. Generally, a branch has three bud eyes. All the leaves at the lower part of the cuttings should be cut off, leaving only the upper two leaves for photosynthesis. Don't leave too many leaves, it will consume nutrients and evaporate a lot of water from the stem. The bottom of the cuttings should be cut into horseshoes and placed in a clear water basin to prevent air drying. Cut in time. The most suitable temperature for Chinese rose to take root is 20-25℃, and generally it can take root above 8℃. If the ground temperature is lower than 8℃ in winter, it is difficult to take root after cutting. When the temperature rises in spring, besides paying attention to the spraying on the bed surface, the moisture in the bed can not be ignored, otherwise the cuttings will wither due to lack of water, and even the rooted seedlings will die.
The method of checking the matrix is to insert the soil into the depth of 8- 10 cm by hand and take out a little. If you knead it by hand, it means that the water is suitable; if you don't knead it, it means that the soil is short of water. First make a hole with a wooden stick, and then press Chacon's cuttings by hand. The cutting depth is 65438+ 0/3 of the cutting, and the blade spacing is appropriate. After the cuttings are inserted, water them with a fine watering can in time, spread the bed sand and cover them with plastic film. Shading 1-2 weeks, spraying leaves 1-2 times a day. When transplanting, the roots should be sticky with mud and planted while digging. Adding 1%-2% copper sulfate and 0.50% urea into the mud can not only prevent root rot, but also promote the growth and survival of seedlings. Before planting, put the broken tiles on the drain hole of the flowerpot, add the mixed soil, then plant the seedlings in a pot filled with soil, treat them in layers and compact them. After planting, water them for 65,438+0 times, put them in the shade for 7-65,438+00 days, move them to a ventilated and sunny place, and water them for 65,438+0 times every day after planting.
Grafting is the main means of propagation of Chinese rose. The choice of rootstock is very important when grafting. Cuttings are rich, easy to take root, can adapt to local climate conditions, and have good affinity with scions. At present, the commonly used rootstock in China is rose. Grafting usually takes place in dormant period, and branch grafting is adopted before leaf buds germinate in spring. Bud grafting is commonly used in growing period.
Pruning method of peach trees in May ① Light pruning refers to only cutting off the blind nodes of branches, and the pruning amount is very light. After light and short cutting of peach branches, the germination rate is improved, and the ability of forming branches is also enhanced. The total growth of branches is large, but the growth of branches is not strong. New shoots are mostly concentrated in the middle and upper parts of branches, with full buds, and the lower parts are mostly short branches or leafy branches.
② In general, 1/2 of the total length of annual branches is cut from short and medium branches, and the new shoots sprouting in the second year generally have weak growth potential.
(3) Heavy and short cut is generally 2/3 of the total length of 1 annual branch. The growth potential of new shoots germinated in the second year is generally strong. This pruning method is mostly used to prune fruiting branches, long branches as main branches or extended branches of side branches.
(4) Re-cutting means cutting off 3/4 ~ 4/5 of the total length of 1 annual branches, and the new buds sprouting in the second year have strong growth potential. This pruning method is mostly used to prune extended branches with developing branches as the backbone.
⑤ Extremely heavy cutting is to cut off most of the annual branches of/kloc-0, leaving only 1 ~ 2 buds at the base. This method is mainly used for renewing and pruning long fruit branches.
What are the common grafting methods of Chinese rose? The commonly used grafting methods are root grafting, bud grafting, stick bud grafting, T bud grafting and working mouth grafting.
Grafting on roots and budding on branches are used the most, while others are used less slowly.
What are the methods of picking the heart of loofah? Picking the heart first and then leaving the melon has achieved high yield. It began to hang when the main vine grew to 7-8 leaves, and began to pick the heart when the main vine grew to 1 1- 12 leaves and the vegetative growth was relatively vigorous. At this time, the germination rate of lateral branches slows down, and the main vine is strong because of sufficient nutrient accumulation. After the lateral branches germinate, you can leave the melon. At this time, you can leave a melon on every two leaves, so that the loofah will not have the phenomenon of empty tree stubble, and the output of loofah will naturally be high.
What are the pruning methods of asparagus? Pruning method of asparagus:
Topping at seedling stage: the seedlings are raised from a young age, and when the green branches grow to a certain height, the tops can be removed, so that the plants are short and strong, which promotes branching.
Leaf shedding during growing period: After adult asparagus enters the growing period, the leaves at the top of branches will grow unsatisfactorily due to the different conservation environment. When the top leaves are missing, the main branches can be cut short. Pay attention to the lateral buds on the branches and don't cut them off at will.
1~2-year-old asparagus: asparagus has been growing for several years, and it has basically been shaped, but many new branches will grow around it, and the plant type is inevitably a bit messy. Because there are many branches and uneven thickness growth, it needs pruning.
In order to ensure the beautiful shape of the plant, some branches that are too thick and slender are cut short. If the new branches are too messy, cut them off to ensure that each branch grows upright.
Asparagus (scientific name:? Asparagus, also known as Yunnan pine, asparagus, Yunzhu, Latin name: asparagus, can reach several meters high. Asparagus has a slightly fleshy root and a soft and long stem. The branches of the stem are many and almost smooth. Leafy branches, setose, slightly trigonous, scaly leaves with slight spines or inconspicuous spur at base. The flowers are white with short stalks, and the flowering period is from September to 65438+ 10. Berries are purple-black when they are ripe, with 1~3 seeds. The fruiting period is from winter to the following spring.
What are the pruning methods of chlorophytum? Cut off the dead branches on the periphery. Cut off the charred part of the tip of the knife. Don't cut it flat, cut it diagonally, preferably on both sides. It will look more natural.
Cut off some old leaves of chlorophytum in early and middle May. Will promote the germination of more new leaves and small chlorophytum.
There are many kinds of chlorophytum, with different shapes and characteristics. There are five common types: chlorophytum, purple chlorophytum, flower chlorophytum, gold leaf chlorophytum and silver edge chlorophytum.
Chlorophytum: leaves are inseparable, leaves droop, leaves are dark green, and bloom in June and July every year. These flowers are light yellow and white.
Chlorophytum purpurea: The branches have nodes, each node has leaves, the petioles are purple, the leaves are thick and shiny, all drooping, and they bloom from June to 10 every year, and the color is pink.
Chlorophytum: the branches are tendrils, the branches are drooping, the leaves are peach-shaped, the edges of the leaves have golden patterns, and they pass through the center of the veins, and the back of the leaves is purple and gives off light.
Chlorophytum in Phnom Penh: There are yellow lines around the green leaves.
Silver-edged chlorophytum: on the green leaves, white edges are painted to make them more colorful.
Strong roots, short stems and slightly thick roots. Leaf-shaped, long 10-30 cm, wide 1-2 cm, slightly narrower at both ends.
Chlorophytum is a perennial herb with basal leaves, strip-shaped to strip-shaped lanceolate, long and narrow, and flexible as blue. The biggest feature of chlorophytum is that mature plants will come out of the stem from time to time. The stem is 30-60 cm long, and small plants will grow at the top. Flowers are longer than leaves, sometimes up to 50 cm, which often become creeping branches or young plants with leaves near the top.
Flowers are white, usually 2-4 in clusters, arranged in scattered racemes or panicles; The pedicel is 7- 12 mm long, and the joint is located in the middle to the upper part; Perianth 7- 10 mm long, 3 veins; Stamens slightly shorter than perianth segments; Anthers are oblong, 1- 1.5 mm long, obviously shorter than filaments, and often curl after cracking.
Capsule triangular oblate, about 5 mm long and 8 mm wide, with 3-5 seeds per room. It blooms in May and bears fruit in August.
What are the common methods of seedling pruning? The common pruning methods mainly include pulling branches, smearing buds, cutting short, thinning branches, coring, damaging branches and chemical pruning.
Select the pulling method for branch pulling, so that the trunk (branch) or big branch changes its original direction and orientation and grows continuously according to the predetermined orientation and trunk shape. Branching is usually used in pot experiments and various brewing buds, and the shape (dry shape) of the required seedlings is usually achieved by pulling, twisting, bending, bending and traction. Such as the emergence of seedlings such as Podocarpus and Ficus. 、。
In order to save nutrients and the demand for coins, the remaining shoots should be erased immediately to allow the remaining shoots to grow normally. Such as: butterfly fruit, face, basin frame, there are many buds on the branches, so we should erase the remaining buds in time.
Cut off a part of the branches by cutting them short. Usually, before thinning, you can choose short cutting, remove the strong branches of 1/3- 1/2, and then promote the high growth of the trunk. Such as: pot rack, Manglietia glauca, Hainan red bean, etc. 、
Thinning is called thinning when all branches are cut from the base of a branch or branch group. After thinning, the growth trend of the remaining branches is enhanced, the nutritional area is relatively expanded, and the ventilation and light transmission of the crown are improved, which is beneficial to its growth and development. Principle of leaving branches: it should be sparse but not dense, evenly spread and reasonably controlled. Attention should be paid to thinning and interspersed.
Branches, overlapping branches, upright branches, drooping branches, pest branches, closely spaced and crowded branches or branches. We should always remove those competitive branches that hinder the growth of the trunk. The growing point (terminal bud) of the branch. After removing the core, it can promote the growth of branches, and then achieve the intention of balancing the branch potential and controlling the growth of branches, and obtain the ideal crown shape of seedlings. Such as: butterfly fruit, almond _ head shape, ball crown, etc. Injured branches damage the bark, phloem and xylem of branches, so as to weaken the growth potential of branches and smooth the tree potential. Most of the damaged branches are carried out in the growing season, which has great influence on some parts and little influence on the growth of the whole tree.
Ring stripping. Stripping a certain width of bark from the right part of a branch or branch base with a knife can hinder the downward transportation of sugar at the top of the branch for a period of time, which is beneficial to the accumulation of nutrients and flower bud differentiation in the branches above girdling. Therefore, it inhibits the growth of T nutrients and promotes reproductive growth. Suitable for branches with few flowers and fruits at the peak of development.