1, cultural backbone
Many people are used to raising tall branches from the original cuttings, which is actually a misunderstanding. The propagation of roses is mainly the cutting of tender branches, that is, thinner branches. If only the original high branches grow, the result can only be inflated, with fewer flowers lodging. The reasonable method is: according to the overall growth of seedlings, topping for the first time after 2 months in the growth period, so as to promote branching, enrich branches and feathers, promote the good development of roots with more photosynthesis, and promote the differentiation of buds near the surface (that is, low buds or bamboo shoots at the junction of rhizomes). It is not recommended to raise seedlings in the first year, and the main pruning work in the growth period is to remove the high and keep the low, and to remove the weak and keep the strong to promote. The thickness of branches is not determined by the thickening of twigs, but by the enlarged diameter of tissues at the junction of roots and stored latent buds.
2. Rational fertilization
The principle is to apply less chemical fertilizer and more organic fertilizer. Nitrogen fertilizer with moderate concentration can be applied twice in the middle and late February (fermented urine is a fertilizer with high nitrogen content) and once in the growing season to promote germination after flowering, but it is not recommended to use it frequently. Too much nitrogen fertilizer will only lead to too many leaves and white powder, and even lead to vain growth. Some flower friends burn seedlings with too high a concentration of nitrogen fertilizer or urea. After the flowering period in May, the organic fertilizer is buried for the first time. It is recommended to use cake fertilizer, and put liquid fertilizers such as cake fertilizer water and fish intestine water every 10- 15 days. The principle of fertilization is: mainly nitrogen fertilizer before germination, and no fertilization during germination. When the new buds grow to a little, phosphorus and potassium fertilizers are the main ones, and some foliar fertilizers can be supplemented intermittently. After 10, all fertilizers with high nitrogen content should be stopped and only phosphorus and potassium fertilizers should be applied. In order to obtain high-quality autumn flowers, routine pruning should be carried out in late summer, that is, September, and no routine pruning should be carried out after autumn flowers. The more branches left, the more nutrients will flow back when pruning in winter.
3. Safe summer.
It is normal for some leaves to appear yellow in high temperature period, but if a large number of leaves wither, it is caused by improper management. The main reason is that evaporation is too fast at high temperature, and the water content of the medium can't keep up with the evaporation speed, that is, dehydration occurs. Plants voluntarily give up some leaves to save their lives. Of course, high concentrations of drugs or fertilizers can also cause injuries. In hot weather, water it 1-2 times a day, cover it with a watering can for 3 minutes, and then pour it thoroughly. It is possible to use drip irrigation.
4. Change pots at the right time
If the nutrition can't keep up with the planting branches in the high temperature period, it may hibernate, or it may not hibernate if the nutrition is sufficient. Changing pots depends on the overall width. If the roots are full of pots, it is recommended to change them. How do you know that the root is full? Generally, branches are twice as wide as pots, which means that the roots are full of pots. Of course, it is also feasible to pour the pot directly and add base fertilizer to the bottom of the pot, which can basically break dormancy. Some varieties will bloom more than in spring, but the quality is not high at this time, so buds can be picked to promote growth. Conventional pruning can be carried out in high temperature period, but not in large quantities at this time. Excessive defoliation will lead to the decline of plant immunity.
5. Moderate lighting
It is suggested that potted plants with toothpicks should be enough for half a day. Rose is a long-day plant, but it doesn't mean bursting sunshine. Any variety can bloom normally as long as it reaches direct light for more than 4 hours. Judging whether light has an effect on plants, we can know that excessive growth means that Chinese rose will enter a rapid growth period in rainy season, but the lignification of tender branches is not enough, which can be avoided after sufficient light. The flower branches are thin, the spacing between bud nodes is long, and the leaves are small and dull. It can be alleviated by increasing the lighting time.
Gardener. com concluded that sometimes flower friends buy rose toothpick seedlings in order to save costs. Although the seedlings are weak, they are cheaper. How to cultivate and manage miniature rose toothpick seedlings. Rose seedlings will have a lag period of about 65,438+0-2 months from the time when cuttings take root. After lignification of roots, they will enter a vigorous growth period (except dormant period). Most varieties will become large seedlings or even super-large seedlings after 6-65,438+00 months, and enter the prime of life after 65,438+0-2 years. In a year, Chinese rose has two main rapid growth periods, May-July and10-11; The dormancy period is12-the end of February, and the peak period of flower bud differentiation is mainly from March to May. Usually all varieties will bloom in short branches and will not experience long branches again. The main flowering period of autumn flowers is10-165438+1early October. After understanding these characteristics, toothpick seedlings can be managed according to the right medicine.