Cultivate orchids first cultivate the roots of orchids

The root is the root of the growth of all things, and it is the main part of the plant to absorb nutrients. If you can't keep it well, then the flower or tree must not grow very well. The root of the total orchid of flowers is particularly important. But it is not easy to cultivate orchid roots.

However, it is not easy to raise Langen well, not only for those who are new to the orchid gate, but also for famous orchid farmers to make mistakes. According to the experiences and lessons of raising Langen well and combining with my own practical experience, the causes and preventive methods of Langen are described as follows:

1. Langen injury caused by seedling, shipment, ramet, etc.:

This kind of injury is inevitable and can only be operated as carefully as possible to reduce root breaking and rotting. All broken and rotten roots should be cut off, and then let the roots dry in low light for an hour or two or dry for half a day to help the wound form a scab, then soak and disinfect in 0.2% potassium permanganate or other fungicides for an hour, remove and wash, then dry and colonize. It was not watered within two days after planting, and the nutrients were supplemented by external root spray.

Second, the cultivated soil is not suitable:

The pH of the cultivated soil is inappropriate. In the alkaline areas of the soil, the pH of the cultivated soil should be carefully tested and the ph of the cultivated soil should be adjusted to 5.5 to 6.5.

The cultivated soil is not loose and breathable enough, and the drainage performance is low. The sand content of the cultivated soil should be about 40%, or it can be mixed into the burned soil 20% which has been drenched by Rain Water for many times. Because the burnt soil is not sticky, it can ensure that the cultivated soil is in a loose state. In order to enhance the air permeability and drainage performance of the cultured soil, it can be conditionally mixed with 10% sawdust or pteridophyte root shavings.

Third, improper selection of orchid pots:

Some orchid farmers often buy porcelain pots in pursuit of beauty, because of their fine texture and poor water permeability, affecting the growth of orchid roots. It is best to choose rough pottery high-foot basin, the edge of the basin bottom basin has breathable drainage holes for the best.

4. Improper management:

Water stains. Most new orchids mistakenly think that Lanxi is wet, so they water it every day, even several times a day, resulting in fleshy orchid root dyspnea. The watering time is the most appropriate on the second or third day after the basin soil shows signs of slightly drying. Http://www.yuhuagu.com

Drought. For those who first raise orchids, they are afraid that too much watering will lead to waterlogging. Whenever watering is needed, only a little water will make the basin soil and bulbs moist and cause the leaves to wilt.

Freezing damage. Orchids are not resistant to subzero temperatures and frost. The application of nitrogen fertilizer should be stopped from mid-autumn, and the application of phosphorus and potassium fertilizer and compound trace elements should be increased, and the amount of light should be increased gradually to enhance the frost resistance. When the cold spell is approaching, protective work should be done. In the south, plastic film can be used to seal the heat preservation; in the north, it should be moved into the greenhouse to prevent frost damage.

Fertilizer damage. Fertilizer damage often occurs when there is an unfermented organic fertilizer in the cultivated soil or the proportion of organic fertilizer is too large. If you apply chemical fertilizers such as agricultural potassium sulfate compound fertilizer, the concentration should be controlled between 600 and 800 times, and fertilizer and water and leaf washing water should be applied within half a day after application. It can be applied every half a month during the growing period, not during flowering and dormant periods, when the temperature is low or on rainy days. It is worth mentioning that urea can only be sprayed at very low concentrations and cannot be used for pouring.

Bacteria and insect pests. The causes of orchid fungus and insect pests are not only due to poor disinfection of seedlings with diseases and insect pests, but also for the reasons that culture media, orchid pots and places have not been disinfected or disinfected badly. In addition to regular inspection of bacteria and insect pests, regular selection of pesticides to sterilize insect pests, disinfection of seedlings and disinfection of substrates, orchid pots, sites, hands and tools can not be ignored. For cockroaches, flies, mosquitoes and other pests, we should also choose related drugs such as "Mianshiling" and other spraying pots and sites to remove. Orchid culture soil should also be disinfected. When the temperature begins to pick up, it should also be combined with watering, choose low residual toxic and efficient topzine, carbendazim, agricultural streptomycin and so on, apply alternately once a month.

Turbid gas damage. Orchids like to be ventilated, and fleshy orchids need fresh air. In the practice of raising orchids, a hydrophobic duct with a diameter of one centimeter to two centimeters and many small holes is inserted into the orchid basin to achieve omni-directional ventilation.