Oxalis honghuaensis, don't be frightened by its name. In fact, it is a common plant in our life. Oxalis corymbosa has strong growth potential and long flowering period, which is deeply loved by the majority of people. However, due to the extensive daily management, the phenomenon of only planting crops has appeared in many areas. Oxalis safflower, which has been growing for many years, is weakening year by year, and withering in serious places, affecting its ornamental value. This article is the senior flower friend to the red flower Oxalis aging reason analysis and rejuvenation method introduction, let's go to understand it!
Rejuvenation method of Oxalis Carthami the reason of Oxalis Carthami aging: the underground bulb of Oxalis Carthami is spindle shaped, covered with brown hard cortex, and there is terminal bud at the top. After the terminal bud was damaged, a large number of axillary buds germinated around it, and adventitious roots could grow at the base. When the temperature rises in spring, Oxalis honghuaensis begins to tiller, and the base of the plant growing on the bulb gradually expands to form a new bulb. There are about two tillers per year. The first tiller turns green in spring, and the second tiller is at the end of summer dormancy. With the increase of tillering times and the growth of new bulbs, the bulbs move upward and the roots gradually approach the ground. This phenomenon is called "jumping roots". According to the author's observation, the second to third year after planting is the peak tillering period, and the flower amount is also more. After the fifth to sixth year, the tillering ability gradually weakened, most of the bulbs had leaped more than 5cm above the ground, the growth was obviously weak, vulnerable to sunburn and freezing injury, and susceptible to diseases and insect pests. The inner part of the new bulb was milky white, while the inner part of the old bulb was moderately red and lignified.
The reason of Oxalis Carthami aging the regeneration and rejuvenation of Oxalis Carthami: Oxalis Carthami is easy to grow and live. Regeneration and rejuvenation can be combined with annual ramet propagation, and the best ramet time is from early March to the end of April in North China. At this time, the survival rate of ramet rejuvenation planting is high, and it does not affect the growth and ornamental effect of Oxalis Carthami. In addition, the dormancy in summer is also a good time for ramets to rejuvenate.
1. Raise seedlings: dig up the whole seedlings with shovels, gently pat away the old soil around the roots, and gather them in a concentrated way. Dig a little bit away from the plant, so as not to accidentally injure bulbs, and pay attention to the shovel to dig straight down, not to dig down, hurt bulbs.
2. Ramet: remove the withered leaves and about 1 / 2 of the old leaves of Oxalis Carthami to reduce the transpiration loss after planting. It is better to cut off the old bulb at the lower part with a sharp knife under the first or second new bulb above, so that the seedlings with one or two new bulbs can not only remove the old bulb at the lower part and rejuvenate, but also ensure that the new plants have enough nutrients to germinate and bloom rapidly. Finally, in the cut new bulb wound, with fresh plant ash dip, in order to prevent the wound rot.
3. Fertilization: apply more organic fertilizer in the flower bed where the aged seedlings are removed, turn it deeply and rake away the dead leaves and weeds. Generally, 0.5 to 0.8 kg / m2 of cake fertilizer is applied, and the phosphorus and potassium fertilizer is increased appropriately to ensure the flowering needs of Oxalis Carthami.
4. Planting: Oxalis honghuaensis grows rapidly, and each plant can reproduce 3 to 9 seedlings in the same year. When planting, we usually adopt pin shaped hole planting, and the spacing between plants and rows is 25x35cm. Dig 8-10 cm deep holes with a small shovel. According to the size of bulbs, put 4-6 plants in each hole and cover it with soil for 3-4 cm. Pay attention to exposing the leaves to the soil surface. Of course, furrow planting method can also be used. The spacing between plants and rows is generally 15 to 30 cm. Water after planting for 2 to 3 days to prevent bulb rot.
Management of Oxalis Carthami: strengthening the daily maintenance and management of Oxalis Carthami can also effectively delay its aging. Oxalis corymbosa has a flowering period of more than 5 months. It needs a lot of fertilizer and water during the growth period, so it should be fertilized and watered in time in the growing season. In spring, before Oxalis honghuaensis turning green, 15-20 kg per mu of fertilizer can be applied in holes or in combination with soil moisture. After that, the fertilizer was applied every 20 days except the dormancy period, and attention was paid to the prevention and control of diseases and pests. With the increase of temperature from July to August in summer, Oxalis honghuaensis was forced to enter a dormant state and basically stopped growing. In order to prevent sunburn damage of new stems exposed to the soil surface, the soil should be covered. The thickness of covering soil should be determined according to the height of the new stem of Oxalis corymbosa, generally 2 to 3 cm.
In a word, according to the phenomenon that Oxalis honghuaensis is tillering and new stems are moving upward, we should strengthen daily management and maintenance, enhance plant growth, delay its aging phenomenon, and renew the plants when necessary, so as to make the robust Oxalis honghuaensis beautify our environment with the most beautiful posture.
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