Seedling pruning
In the flower border maintenance, the shaping and pruning of seedlings is essential. Maintaining the proper plant type of all kinds of seedlings is a necessary prerequisite to ensure the overall ornamental effect of flower borders. Pruning and shaping should be carried out according to the physiological characteristics of individual seedlings and local conditions. There are several technical measures for pruning: one is to remove the heart. Remove the terminal buds of branches, promote the growth of branches, make flowers flourish and plant shape compact. This is an effective method to prevent many tall perennial flowers from lodging. If Coreopsis is too high, the plant height can be reduced by coring.

The second is to bud. The purpose is to peel off too many axillary buds and limit the number of branches, so that the flowers are big and full, and the seedlings in the flower border can maintain an appropriate volume without affecting the growth and landscape effect of other seedlings. For example, when planting chrysanthemum in the flower border, in order to fully reflect the large and gorgeous effect of chrysanthemum flowers, it is necessary to erase more flower buds of plants.

The third is pruning. Cut off dead branches, branches with pests and diseases, branches that are not in the right position and disturb the plant type, branches that remain after flowering, etc. , and clean it in time, which is not only conducive to improving the ventilation and light transmission conditions of plants, reducing the consumption of nutrients, but also ensuring the best viewing effect of seedling landscape.

In addition, the residual flowers of seedlings in the flower territory should be removed in time, otherwise the flower border will appear messy. If the dead leaves of Coreopsis are not removed in time in winter and scattered when new leaves grow in spring, the aboveground parts can be removed in winter for renewal. In addition, some varieties such as chrysanthemum, chrysanthemum and oregano rot in summer, resulting in poor landscape effect, which should also be paid attention to.

The branches and leaves of flowers growing in vain shall not exceed 20 cm in total height. If some grass flowers are found to be white and long, you can ensure the smoothness of the flower belt by picking the heart, picking the flowers and changing the seedlings. On the other hand, pruning is the key to ensure the good effect of the pattern. Such as five-color grass flower beds, the five-color grass is pruned for the first time after planting, and the grass is flattened, and then pruned every 15-20 days/time. There are two ways to cut grass: the first is flat cutting. Cut the pattern and text flat, with the edge slightly lower and the top slightly higher. The second is relief modeling. Trim the pattern into a relief shape, that is, the middle grass is higher than the sides. After planting, the first pruning should not be repeated, and the second pruning can be heavier. At the junction of two seedlings, all directions are trimmed obliquely, so that the junction is sunken, resulting in a three-dimensional effect. In particular, the shapes of figures and animals need to be carefully trimmed. For example, when making animal models such as horses and cows, the following problems are easy to appear: if the horse's belly is rounded, it will become a fat horse without spirit; Pioneering cattle should have prominent muscles and ribs and a towering backbone, but the works produced can't find the feeling of making progress. Red and green grass should be pruned in time, so that the tillers at low nodes can grow flat and densely as soon as possible. Late pruning will lead to high tillering, waste seedling nutrients and delay the formation time. In addition, when pruning the flowerbed with patterns, in order not to trample the flowerbed patterns, you can use a long wooden stool to put the flowerbed and operate it on a long bed.

Summer seedling maintenance

Summer is a hot season, the most vigorous season for seedling growth, and the season of high temperature and windy, drought and flood, and frequent pests and diseases. Management after seedling planting is the key to seedling survival rate, seedling yield and quality. In this high temperature, drought, rainy and humid environment in summer, the growth and development of seedlings are poor, pests and diseases appear, and the quality and yield of seedlings are reduced. What should be paid attention to in summer seedling maintenance? Nanjing Chuangjing summed up several points for many friends on how to do a good job in summer seedling maintenance management: First, irrigation and drainage.

1. Irrigation: In summer, the temperature is high, the water evaporates quickly, and the soil is prone to water shortage. At this time, the seedlings are most vulnerable to drought. Most seedlings should be watered every ten days, preferably in the morning and evening, in the summer when there is little rain and drought. When watering, not only should the soil be thoroughly watered, but also the tree body and its wrap (such as straw rope wrapped around the trunk) should be wetted. For seedlings of Ginkgo biloba and pine trees with strong drought resistance, irrigation is generally unnecessary, but for seedlings of poplar, weeping willow and Metasequoia, irrigation times can be appropriately increased.

2. Drainage. There are many natural disasters such as typhoons this season, so the nursery should be drained in time when there is water. If the soil is poorly drained, attention should be paid to controlling watering times to avoid root rot.

Second, tree support

The weather in summer is unpredictable, and the newly transplanted Cinnamomum camphora root system has not recovered its soil-fixing support ability, so it is easy to be blown down in windy weather (such as typhoon), which affects the recovery of root growth, so it is necessary to do a good job in tree support in time. The supporting material can be bamboo pole or iron wire. However, when supporting the tree, the bark should be well protected to avoid wire damage to the bark or even embedding into the tree, which will affect the survival of the upper tree.

Third, sun protection.

In summer, the temperature is high, the sunshine is strong, and the water evaporation of trees is relatively large. Shade-tolerant trees, flowers and seedlings with too late sowing date should be shaded properly, and cooling measures should be taken in the early growth stage to reduce the adverse effects of high temperature and heat damage. Such as shade shed. If possible, you can use sunshade nets to protect seedlings from summer and avoid the harm of sunburn, which is beneficial to the growth and survival rate of seedlings.

Fourth, loosen the soil and weed in time.

It is sunny and rainy in summer, and it is also a period when weeds grow vigorously in the field. Weeds can easily absorb nutrients from the soil and affect the growth of seedlings. After each rainfall or irrigation, intertillage and weeding should be done in time. Sowing seedlings is not convenient to loosen the soil. Weeds between seedlings can be pulled out, and then a layer of fine soil is spread on the bed surface to prevent the roots from being exposed. Tillage should be deepened step by step, but seedlings should not be damaged or pressed, and seedlings roots should not be damaged when weeding.

Five, fertilization methods should be appropriate.

Seedling growth needs to provide sufficient nutrients. In order to meet the vigorous growth demand of seedlings, topdressing should be done in time, with quick-acting fertilizer as the main topdressing. As far as possible, ditch application and hole application should be adopted to improve the utilization rate of fertilizer.

Fertilization should not be too high, nor should it be applied too much at one time. Water or lightly apply water and fertilizer in the morning and evening, and never sprinkle chemical fertilizer between seedlings. Water and fertilizer can be applied after loosening the soil and weeding.

Six, timely thinning and fixing seedlings.

Intercropping should be carried out after rain or irrigation. For over-dense, stunted, stunted, injured seedlings with pests and diseases, and overlord seedlings that affect the growth of most surrounding seedlings, fast-growing broad-leaved trees need to be intercropped 1-2 times, and slow-growing conifers such as cypress trees should not be planted prematurely, but should be planted after 2-3 times. After thinning, it is best to water with dilute manure to improve the survival rate of seedlings.

Seven, summer scissors

In order to grow better, no matter what seedlings need pruning in summer, if they can't be pruned in time at this time, it will not only cause nutrient consumption of seedlings, but also increase the workload of pruning in winter and affect the quality of seedlings.

Eight, pest control

Seedling growth is vigorous in summer, and the weather is changeable in summer, which is prone to seedling diseases and insect pests. At this time, it is necessary to strengthen the investigation, make a good prediction of pests and diseases, and take reasonable prevention and control measures.

1, seedling disease

Powdery mildew: It occurs frequently on seedlings such as Lagerstroemia indica and Buxus macrophylla, and can be controlled by 300-400 times of 50% carbendazim or 800 times of 50% thiophanate, generally twice, and sprayed every 7 7- 10/day/time.

Others: For sprout vegetables just transplanted this spring, it should be sprayed 2 ~ 3 times to prevent it, and carbendazim, thiophanate-methyl or chlorothalonil should be sprayed alternately.

2, seedling pests

Underground pests: scarabs, crickets, etc. It can be sprayed with dimethoate, or diluted with phoxim for root control or artificial capture.

Starscream: It often occurs on cypress trees and can be controlled by acaricide.

Aphids: mainly occur on seedlings such as pittosporum, camellia and red plum. Pests such as marsupials and moths may occur on many seedlings and should be controlled at the larval stage.

In a word, the maintenance and management of seedlings in summer is the most important and has a great influence on the growth of seedlings. If it is not properly managed and maintained, it will cause great losses. It is hoped that creative landscape can be flexibly applied to the planting process, and regular inspection can be carried out to prevent and reduce injuries as soon as possible.

How to Trim Jasmine with Tiger Head How to Trim Jasmine with Tiger Head

As we all know, jasmine is a flower plant that grows vigorously and often needs pruning, and often needs pruning again. Many people treat tiger jasmine just like ordinary jasmine, but it is actually wrong. I want to remind you here that the jasmine with tiger head can't be pruned again!

Compared with common jasmine, jasmine grows very slowly. If you trim it too much, it may not be restored for a long time. Ordinary Jasminum nudiflorum may recover in a month or two, while Jasminum nudiflorum may not recover to its best state in three months or even half a year, which may lead to the failure to sprout new branches or even the whole branch dying. Therefore, when pruning, we must grasp its degree.

You can't prune the winter jasmine when the temperature is low. Pay attention to whether there is sunshine when pruning, and it is best to prune when there is sunshine. When pruning, the top branches should be kept for a long time to avoid shrinking branches, and fungicides should be sprayed in time after pruning.

Even in normal seasons, the cut of jasmine gourd head should be treated, sealed or disinfected. (Note: Potassium permanganate or highly alcoholic liquor can be used for disinfection. Pruning is not recommended before and after Qingming, which is vulnerable to germs. )

Tips When pruning potted jasmine, you should consider the overall size of the plant and the proportion of flowerpots. If you accidentally trim it too heavily, you must try to bask in the sun and not lack light. Only in this way can jasmine wake up as soon as possible and sprout again.

Pruning method of safety tree

Why trim the Christmas tree?

In the process of safe growth, plant type changes need pruning. Because after the tree grows, the lower leaves will gradually decrease and the height will increase. If it is not trimmed, it will affect the appreciation and is not conducive to placement.

Pruning the safe tree can be shortened in spring, which can increase the number of branches and need to be picked in time. When trimming, pay attention to cutting smoothly.

In addition, you can also cut off the extra branches and leaves, which can shape the ideal shape, and be careful not to trim too much.

It's time to trim the Christmas tree.

Basically, trees can be pruned all year round, and spring and autumn are the seasons when trees grow vigorously. If pruned, new branches can sprout quickly. Pruning can also be done in summer and winter, but the growth will be slower because of light and temperature, so the growth of new branches will be slower.

Pruning method of safety tree

When pruning trees in spring, the main thing is to cut the branches short. When pruning, it should be noted that there should be a large distance between the cut and the bud eye on the stem node, otherwise the tree will easily wither. Don't tear, you can smooth it when trimming.

In addition, if you want to have a good ornamental form, you can shape it by pruning. You can control the height by topping, or you can cut off too dense branches and dead branches of the Christmas tree. The specific shape of pruning can be decided according to personal preference.