How to deal with the rust spot of Cymbidium, fertilizing and applying medicine to change the soil.

Gentleman orchid has the demeanor of a gentleman and the elegance of orchids, is a kind of ornamental plant, suitable for sunny balcony, proper watering, reasonable fertilization can raise very well, if too much watering, improper or uneven fertilization, will cause the occurrence of rust spot. Rust spot is mainly caused by rust-like diseases and insect pests in the middle of the leaves, and flower friends find it tricky to deal with them. How to deal with the rust spot of orchid?

First, the treatment method of Cymbidium rust spot 1. Increase the application of chemical fertilizer.

Magnolia is a fertilizer-loving plant, fertilization can be divided into root fertilization and foliar spraying. The occurrence of rust spot in Cymbidium may be due to the lack of phosphorus and potassium fertilizer, and the occurrence of rust spot can be carried out by increasing foliar fertilization and spraying scale potassium liquid fertilizer every 4 to 6 days.

2. Change the soil

Change the basin soil in time when the rust spot occurs in the orchid, wash the whole plant when changing the soil, remove the rotten leaves, keep the branches and leaves slightly suffering from troupe disease, dry and re-implant them into the new basin, and apply chlorothalonil or topiramate to the diseased leaves until the leaves heal.

3. Spray sterilization

If the rust spot of Cymbidium is not particularly serious, it can be removed by spraying germ. Spray diluted germ on the leaves every half a month to treat diseased leaves and prevent other leaves from being infected.

Second, the cause of rust spot in Cymbidium.

The life span of Cymbidium is very long, generally, diseases and insect pests can be dealt with in time, the most common disease is rust spot, if rust spot occurs, please read in detail: how to deal with Cymbidium rust spot, and understand the causes of Cymbidium rust spot, take precautions.

1. Wrong application of fertilizer

Gentleman orchid likes fertile soil, so we should pay attention to reasonable fertilization in the whole growth process, and the fertilizer must be mature liquid fertilizer. If unfermented or unfermented fertilizer is used, a large number of bacteria will lead to rust.

2. Discomfort of basin soil

The gentleman orchid normally changes the basin once every 2-3 years, and it is also necessary to change the basin or soil if there are special circumstances. If the basin is not changed for a long time, the poor soil will lead to rust spot; in addition, the raw soil chosen by the basin soil or the change of soil will damage the root of Cymbidium, which will also lead to the occurrence of rust spot.

3. Uneven fertilization.

Gentleman orchid base fertilizer is generally used for livestock or human manure, and cake fertilizer or fish and bone powder fertilizer is generally used in the growth process; rotten liquid fertilizer and phosphorus and potassium fertilizer are usually sprayed. If you only apply fertilizer for a long time, do not spray fertilizer to the leaf, it will cause uneven fertilization and lead to the occurrence of rust spot.

Third, the culture method of Magnolia 1. Proper watering

The watering of magnolia depends on the quality of the basin soil. If it is a loose soil with good permeability and drainage, it can be watered once every 3-5 days; if it is heavy soil, it should be watered once a week or twice a week; if there is more water, it will rot roots, and if there is less water, there will be empty roots and yellow leaves. It is best to water the soil again when the soil is dry, not too much at a time.

2. Sufficient light

Junxilan likes the warm environment and light. Throughout the year, except that the summer sun is too strong and needs to be placed in a shady position, other seasons can be placed on the balcony full of sunshine. The sunlight is conducive to the photosynthesis of the leaves of the orchid. It should be noted that the flowerpot is rotated 180 degrees every once in a while to facilitate the exposure of both sides of the sun.

3. Rational fertilization

The basin change of Cymbidium is generally carried out in spring and autumn, when changing the basin, you can pad the rotten bottom fertilizer or bean dregs bone meal at the bottom; Cymbidium likes fertilizer, so, apply fermented bean cake or fishy water fertilizer every half a month; when the winter temperature is below 10 ℃, don't apply fertilizer.