1, wound disinfection: take out the bottle, transplant, change pots or divide plants, and soak the roots, stems and leaves (chlorothalonil, carbendazim, thiophanate methyl, etc.) with disinfectant. ) 20 minutes to prevent the invasion of germs. It is better to water once every 1~2 days after transplanting.
2. Disinfection of old pots: In principle, orchids should be planted in new pots. If an old pot is used, it should be treated with disinfectant before use.
3, the flowerpot should not be too big: the small seedlings are in the big pot. On the one hand, too much planting materials can easily lead to poor ventilation; In addition, it is not easy to spray water evenly. If it is too wet, plant materials are not easy to dry, and bacteria are easy to infect, leading to root rot.
4. Shallow planting of orchids: orchids should not be planted deeply. Long-term moisture at the base of orchids easily leads to soft rot. When planting, the roots, bases or pseudobulb filled with plant materials must be exposed, not buried in the plant materials.
5. Location of new buds: When planting orchids, put the new buds in the center of the basin, which looks askew for the time being, but in the future, the new buds will grow and bloom in the center of the basin. 6. Root position: When planting, the roots of orchids should be evenly distributed around, so as not to overstock each other, so that each root can contact the planting materials and have good ventilation, otherwise it will easily lead to rotten roots.
7, plant fixation: orchid plants can not be deeply planted, so there is often a crumbling phenomenon, so it must be fixed with columns and lines, so as not to shake, so as not to hurt the roots.
8. Compaction of planting materials: Orchid planting materials require good ventilation and drainage, such as water moss and coconut bran. After planting, it should be slightly compacted, otherwise the space of the foundation surface will be too large and the root system will not grow well. The correct way is to compact from both sides, not from above.
9. Watering time: The roots of newly planted orchids may be injured, and the wounds should be coated with fungicides. No watering or less watering within 2~3 days can achieve drug effect and promote the growth of new buds and roots. This is the difference between orchids and other grasses and woody flowers.
10, Avoid strong sunlight: Newly planted orchids should avoid direct sunlight and prevent excessive dehydration, and should be placed in a cool place. Spray it properly to increase the air humidity until the orchid plants return to normal growth. Growing flowers requires frequent watering to grow normally, but what if there is no one at home to water potted flowers for various reasons such as business trips? You can make up for it in the following specific ways:
The water absorption method is to immerse one end of a thick towel or a wide cloth strip in a pot, which should be placed next to and under the flowerpot, and then press the other end of the towel under the flowerpot. Due to the capillary action of the towel, water can slowly penetrate upward, rise and penetrate into the drainage hole at the bottom of the basin, penetrate into the basin, and wet the basin soil.
Drip irrigation method
Install a dropper device similar to patient's intravenous drip, put water into the bottle, hang the bottle upside down, let the water slowly drip into the root neck of potted flowers from the dropper, and then spread into the soil to be absorbed and utilized by the root system. Drip irrigation can adjust its drip speed according to the water demand of flowers, which is more scientific and beneficial to the normal growth of flowers. Choose a large and shallow porcelain basin, fill it with a thick layer of wet sand, and then sit the flowerpot on the wet sand. Through the capillary action of sand, water is continuously supplied to the growth of flowers. This method is only suitable for wet flowers or other flowers and trees with large water demand.
Potting method
For small potted flowers, the flowerpot can be placed in a large flowerpot, and wet sand is placed between the walls of the two flowerpots, so that the water contained in the sand can continuously penetrate into the flowerpot through the walls of the small flowerpot (clay earthen pot) to supplement the shortage of water. Camellia, azaleas, orchids, gardenias, etc. Spraying water on leaves often is beneficial to their growth. In summer, if it suddenly clears up after rain or it is sultry in the evening, you should pay attention to spraying water to cool down and prevent diseases. The amount of water sprayed should be determined according to the needs of flowers, and it is generally advisable to evaporate quickly after spraying. Seedlings and delicate flowers need to be sprayed with more water; New pots and rootless cuttings also need to be sprayed with more water. Tropical orchids, Araceae and pineapple flowers need to be sprayed frequently. But it is not advisable to spray too much water to prevent the soil from getting too wet and causing root rot. Pay attention to ventilation when spraying water.
High temperature and strong sunshine in summer accelerate the transpiration rate of potted flowers, which is easy to cause drought in potted soil. Therefore, it is very important to water potted plants in summer, and you need to pay attention to the following points.
At noon in summer, the temperature of basin soil is higher and the root system absorbs water faster. If cold water is poured at this time, the temperature of basin soil will drop sharply, which will affect the normal function of plant roots. It makes it difficult for roots to absorb water, destroys the balance of plant water metabolism, leads to plant wilting and affects growth. So watering potted plants in summer is best in the morning or at night.
Potted flowers have strong respiration in summer, which requires good ventilation in potted soil. Too much watering will cause poor ventilation of the basin soil, affect the normal physiological activities of the root system, and even lead to column roots in serious cases. So generally don't water the pot soil when it is not dry. When it is dry, water it thoroughly, and don't just water it in the middle of the flowerpot. In summer, flowerpot soil often cracks because it is too dry, and watering can't be done at once.
Otherwise, water will leak from the cracks in the soil to the bottom of the basin, and most of the soil in the basin will still be dry, and the plants will wilt the next day because of lack of water. Generally, wait a moment after the first watering, and then water it again after the soil joint is closed. When the potted flower wilts, its cells shrink due to water loss, and immediate watering will make the cell wall absorb water and expand rapidly.
However, the water absorption of cell protoplasm is slow, which can not be increased accordingly, and will be torn by tension. The destruction of a large number of cell protoplasm has a great influence on plants, even leading to their death.
It is more reasonable to move the withered potted plants to a cool place, spray a small amount of water on the leaves and soil, and then water them after the plants recover.