Waterlogging and diseases and insect pests can easily cause the aging of rose.

Rose cultivation for a long time, there will be weak branches and few flowers, pruned branches dry, leaves, petals thin and light color, leaves yellowing and shedding, and so on, this situation is often the performance of rose aging. Generally speaking, waterlogging and diseases and insect pests are the two main causes of rose aging. The editor will analyze the effects and treatment methods of waterlogging and diseases and insect pests on rose aging for you.

Chinese rose

The main results are as follows: 1. Waterlogging is characterized by yellowing and shedding of leaves, withering of branches and decay of some roots. It smells like lees. For the severely damaged plants or those who are difficult to rule out waterlogging, they should be re-cut and dug up, and then planted after raising the topography. The light victims can use the method of piling soil at the base of the plant to stimulate the adventitious roots in the neck of the roots, so as to achieve the purpose of relief.

2. Leaf spot diseases and powdery mildew caused by diseases and insect pests caused by fungi caused a large number of leaves to fall off, affecting the formation of flower surface, and in serious cases died because the leaves could not carry out photosynthesis. The bacteria began to infect from the end of May and the beginning of June, and the incidence reached its peak during the high temperature and rainy season from July to August. Since the end of May, the spray Baomei 0. 3 to 0. 5-degree stone-sulfur mixture, once a week, 2 to 3 times in a row. If there are signs of a serious outbreak from July to August, spraying 40% Fumei arsenic wettable powder 500 times, once a week, 3 times continuously, can be effectively prevented. If there are more Rain Water, the number of spraying should be increased accordingly. The stem borer longicorn beetle is the most harmful to insect pests. Cutting off the branches harmed by longicorn beetle larvae from mid-June to July is one of the key measures to control longicorn beetles. if this link is not grasped and the larvae are eaten into a trunk, it will be more difficult for the control. The Autumn Equinox and Qingming examined the trees before and after the Qingming Festival, injected 5 to 10 times the human wormhole with 80% dichlorvos emulsion, and then sealed with mud to kill longicorn beetle larvae. Once found, other leaf-eating pests can be sprayed with 800 times monocrotophos to kill eggs and larvae and effectively control leaf-eating pests.

What is the phenomenon of rose aging? how to prevent rose aging?

What is the aging phenomenon of rose? Rose aging phenomenon leaf yellow, few flowers and other symptoms, today's article introduces what is the phenomenon of rose aging, how to prevent rose aging information, you can collect this article! The article is very helpful!

How to prevent the aging of rose

I. waterlogging damage

It is characterized by yellowing and shedding of leaves, withering of branches and decay of some roots. It smells like lees. For the severely damaged plants or those who are difficult to rule out waterlogging, they should be re-cut and dug up, and then planted after raising the topography. The light victims can use the method of piling soil at the base of the plant to stimulate the adventitious roots in the neck of the roots, so as to achieve the purpose of relief.

II. Diseases and insect pests

Leaf spot diseases and powdery mildew caused by fungi cause a large number of leaves to fall off, affecting the formation of flower surface, and in serious cases die because the leaves can not carry out photosynthesis. The bacteria began to infect from the end of May and the beginning of June, and the incidence reached its peak during the high temperature and rainy season from July to August. From the end of May, spray Baume 0.3 to 0.5 degrees stone sulfur mixture, once a week, 2 to 3 times in a row. If there are signs of a serious outbreak from July to August, spraying 40% Fumei arsenic wettable powder 500 times, once a week, 3 times continuously, can be effectively prevented. If there are more Rain Water, the number of spraying should be increased accordingly. The stem borer longicorn beetle is the most harmful to insect pests. Cutting off the branches harmed by longicorn beetle larvae from mid-June to July is one of the key measures to control longicorn beetles. if this link is not grasped and the larvae are eaten into a trunk, it will be more difficult for the control. The Autumn Equinox and Qingming examined the trees before and after the Qingming Festival, injected 5 to 10 times the human wormhole with 80% dichlorvos emulsion, and then sealed with mud to kill longicorn beetle larvae. Once found, other leaf-eating pests can be sprayed with 800 times monocrotophos to kill eggs and larvae and effectively control leaf-eating pests.

III. Fertilization

Yellow leaves, few flowers, small flowers and weak branches are the manifestations of lack of fertilizer. In view of the lack of element fertilizer, combined with the application of other element fertilizer, in order to improve the utilization rate of this element. Foliar fertilization should be applied when certain elements are seriously deficient and the root system is damaged, or when trace elements are needed, and its concentration should be controlled at 0.3%, 0.5%. The fertilization time is chosen in the evening and sprayed from the back of the leaves. In order to improve the utilization rate of fertilizer, plant activating element can be added to promote the plant to return to normal as soon as possible. Resident weak plants should be a small number of times, thin fertilizer should be applied frequently to prevent fertilizer damage.

Fourth, watering

The principle of "inter-dry irrigation" should be adopted in the watering management of rose flowers. The so-called "inter-dry irrigation" is a thorough irrigation, so that the water deep into the roots, the soil is fully moist, but not stagnant water, until the water is absorbed and evaporated, the surface soil has dried. Water it again. The interval between two watering times varies with climatic conditions, sunshine, plant growth and soil properties.

It is inappropriate to dictate that water should be watered every few days. The principle of "intermittent dry irrigation" can be widely used everywhere, but the interval and the degree of drying should be flexibly controlled according to the local climate, soil and plant growth stage and growth conditions.

Prevention of rose aging in the management of more efforts, more observation of rose growth, timely watering and fertilization of rose, I believe that rose will not accelerate aging. Prevent the aging of the rose to do the preparatory work, do the work in place, the rose will flourish! For management methods, we should be flexible, oh, can not imitate the management of oh!

What about the aging of the rose? | Prevention and rejuvenation of rose aging the author mainly introduces what to do about rose aging? Prevention and rejuvenation techniques of rose aging the aging phenomenon of rose is often manifested as thin branches with few flowers, dry branches after pruning, thin and light color of leaves and petals, yellowing and shedding of leaves, weak resistance to diseases and insect pests and so on. We should find out the reasons from the aspects of water and fertilizer, pruning, maintenance and so on.

First, waterlogging is characterized by yellowing and shedding of leaves, withering of branches and decay of some roots. It smells like lees. For the severely damaged plants or those who are difficult to rule out waterlogging, they should be re-cut and dug up, and then planted after raising the topography. The light victims can use the method of piling soil at the base of the plant to stimulate the adventitious roots in the neck of the roots, so as to achieve the purpose of relief.

Second, leaf spot diseases and powdery mildew caused by diseases and insect pests fungi cause a large number of leaves to fall off, affecting the formation of flower surface, and in serious cases die because the leaves can not carry out photosynthesis. The bacteria began to infect from the end of May and the beginning of June, and the incidence reached its peak during the high temperature and rainy season from July to August. From the end of May, spray Baume 0.3 to 0.5 degrees stone sulfur mixture, once a week, 2 to 3 times in a row. If there are signs of a serious outbreak from July to August, spraying 40% Fumei arsenic wettable powder 500 times, once a week, 3 times continuously, can be effectively prevented.

If there are more Rain Water, the number of spraying should be increased accordingly. The stem borer longicorn beetle is the most harmful to insect pests. Cutting off the branches harmed by longicorn beetle larvae from mid-June to July is one of the key measures to control longicorn beetles. if this link is not grasped and the larvae are eaten into a trunk, it will be more difficult for the control. The Autumn Equinox and Qingming examined the trees before and after the Qingming Festival, injected 5 to 10 times the human wormhole with 80% dichlorvos emulsion, and then sealed with mud to kill longicorn beetle larvae. Once found, other leaf-eating pests can be sprayed with 800 times monocrotophos to kill eggs and larvae and effectively control leaf-eating pests.

Third, fertilized leaves yellowing, few flowers, small flowers and weak branches, which is the manifestation of lack of fertilizer. In view of the lack of element fertilizer, combined with the application of other element fertilizer, in order to improve the utilization rate of this element. Foliar fertilization should be carried out when certain elements are seriously deficient and the root system is damaged, or when trace elements are needed, and its concentration should be controlled at 0.3%, 0.5%. The fertilization time is chosen in the evening and sprayed from the back of the leaves. In order to improve the utilization rate of fertilizer, plant activating element can be added to promote the plant to return to normal as soon as possible. Resident weak plants should be a small number of times, thin fertilizer should be applied frequently to prevent fertilizer damage.

Under normal circumstances, there are many rose flowers and a large amount of fertilizer is needed. The application of base fertilizer should be carried out from winter pruning to before sprouting. Adequate organic fertilizer should be applied at the periphery of the crown diameter with a depth of 20 to 30 cm. Topdressing should be applied many times in the growing season, during leaf expansion, after flowering and at the beginning of August, and it is appropriate to topdressing with available nitrogen, phosphorus and potassium. When spreading leaves, a large number of new roots grow, a small amount of fertilizer should be applied, and no thick fertilizer should be applied, so as not to affect the growth of new roots. At the end of August, topdressing should be less nitrogen fertilizer and more phosphorus and potassium fertilizer to prevent autumn shoots from being too prosperous and frost. Topdressing depends on plant size and growth, usually 100 to 150 grams per plant.

Pruning is divided into growing season pruning and winter pruning. The first pruning in the growing season is to cut off the pedicels and dead branches in time after flowering, and cut off the tillering strips of the rootstocks germinated at the base of the grafted plants. Second, after 20 days of blooming in the previous crop, high-quality flower branches can be obtained by leaving 8 to 12 buds short for the flowering branches of the same year.

Winter pruning is to promote the full return of nutrients in branches and leaves, preferably 3 to 4 weeks after frost. The general principle of pruning is to cut off disease and insect branches, thin and weak branches, remove parallel branches, over-dense branches and introverted branches, go straight and stay oblique, weak trees are weak and strong branches are cut lightly. Of course, the specific pruning methods should also be treated differently according to the shape of the variety.

The rose of ① cluster cultivation should achieve colorful effect, requiring plant height and more flowers, not extra-large flowers, cutting height of 100cm to 120cm, leaving 15 to 2 pairs of full buds per branch.

The cultivation of ② as a variety requires that the plant is short and the flower is large, so it should be cut low. Each plant has 3 to 5 main branches, each main branch is 30 to 45 cm long, and 6 to 8 buds are left.

When ③ rattan rose is cultivated on the creeping ground, those who bloom only once a year should cut off the flowering branches after flowering, leave the last flowering branches and stimulate the sprouting of new branches at the base to bloom in the coming year. Those who bloom many times a year cut off the top of the short branches that have flowered after flowering, leaving 2 buds at the base to promote new lateral branches to blossom.

For those who bloom in a season, always keep 5 to 7 branches, reasonably determine the number of lateral branches according to the size of the space, and leave 3 to 4 buds for flowering. As scaffolding and hedgerow cultivation, in order to achieve the effect of plump and dense, more main vines should be left, and if the above pruning techniques are applied to the first and second lateral branches, the flowers can grow luxuriantly.

④ shrub rose hedges should meet the requirements of neat appearance, dense branches and leaves, colorful flowers and not incomplete. Not only legs and other requirements, should be in the same plane "one-size-fits-all" pruning method, trimming time should be wrong blossom.

If you master the above technical points, you can basically make the branches strong, leaves numerous and flowers blooming.