Culture methods and matters needing attention of mosquito repellent

Now has entered the summer, whenever the summer to the mosquitoes will come out, mosquito control is one of the important events in summer, many people will choose to arrange some plants with mosquito repellent effect at home, mosquito repellent grass is one of the common varieties, at present on the market mosquito repellent grass some sell, but mosquito repellent grass how to raise? This is a problem. Xiaobian has compiled some information about mosquito repellent grass cultivation. We understand:

Basic information about mosquito repellent

Mosquito-repellent grass is also called mosquito-repellent vanilla, transgenic geranium, mainly refers to transgenic geranium, adopts transgenic technology, implants citronellal gene structure with mosquito-repellent gene into "vanilla", uses its own unique release system as carrier to release citronellal substance into the air, and implants DNA gene structure containing fresh smell and purifying air function to form "natural evaporator", so as to achieve mosquito-repellent effect.

Pelargonium is a perennial herb or shrub, up to 1 m tall. Stem erect, 80-90 cm tall, grayish green, lignified at base, fleshy above, densely covered with glossy pilose, fragrant, very vigorous. Leaves long-stalked, broadly ovoid, 5-7-palmar, lobes reflexed, lobules margin serrate; flowers small, densely umbellulate, opposite leaves, whole plant steaming aromatic oil, often cultivated as aromatic plant. Because of its aroma, often potted ornamental. Originated in South Africa.

In fact, there is no such plant as mosquito repellent grass. It is only a commercial name. The reason why it is called "mosquito repellent grass" is because the merchants want to sell it well.

All varieties of geranium didn't have mosquito repellent effect themselves, only artificially transgenic geranium had this effect.

Breeding method of mosquito repellent grass

Mosquito repellent grass is usually sown, cuttage propagation, in spring and autumn cuttage easy to survive. In early March, seeds are sown in clean fine sand to a depth of 3 cm. After 4 hours after insertion, pour water again, keep the basin soil moist later, not too dry or too wet. Early spring indoor warm bright place. At room temperature of about 20℃, about 1 month can germinate, root. After that, the seedlings are cultivated separately, and the seedlings are cultivated on common culture soil. When the seedlings grow strong, white roots emerge from the bottom holes of the pot. Some broken hoof pieces are placed under the fertile culture soil as base fertilizer, and the chrysanthemum pot is transplanted.

Breeding method of mosquito repellent grass

1. Soil: Mosquito repellent grass likes neutral and acidic soil, and it is usually fertilized once every 15-20 days. Plant height in 30 cm, 40 leaves when the mosquito repellent effect is best, yellow leaves should be removed at any time. Seedling growth is very fast, so in the seedling stage to change the pot more frequently, 6 months to use peat soil, vermiculite 1.5, pearlite 1.5, coal ash 1 part of the special self-prepared nutrient soil, PH value slightly acid neutral, can also be purchased from the flower market with good commodities (PH value 5.5-7) leaf observation substrate soil. After six months, the plants have strong adaptability and can be used freely. Biennial plants have lignified stems, which can be pruned and shaped according to personal preference.

2. Temperature: The most suitable growth temperature of mosquito repellent grass is 10-25℃, it can safely overwinter above 0℃, and it can normally emit lemon fragrance above 15℃. The higher the temperature, the stronger the scent. Proper amount of spray mist on plant leaves can make citronellal substances continuously released, thus making mosquito repellent effect better.

3. Light: Mosquito repellent grass likes shade and is not resistant to strong light when growing, especially in summer. It can be planted under trees or in shade. Family potted plants are usually grown indoors.

4. Water and fertilizer: water should be poured once after each pot change. Fertilization should be started after 10 days of slow seedling. Spring and autumn is the vigorous period of plant growth. 20-10-20 and 14-0-14 water-soluble compound fertilizer 200ppm solution were applied every 15 days. Watering should stress the principle of research between dry and wet, summer high temperature should be less watering, no fertilization, conducive to the development of roots, improve disease resistance. Family cultivation can also be applied a small amount of cake fertilizer and rice washing water.

5, insect disease: improper management caused by disease root rot or stem rot phenomenon, followed by leaf shrinkage, black spots, and then the whole plant atrophy. This is due to humidity is too high, temperature is too high, while poor ventilation or seedling density caused by too large. Bactericide such as Baijunqing or carbendazim can be sprayed (800 to 1000 times solution). But do not spray frequently.

Notice of mosquito repellent cultivation

The sudden leaf loss in a short period of time is often due to too large a temperature change or insufficient light. The leaves turn yellow and soon fall off, mostly due to insufficient light and excessive watering. This phenomenon can also occur in winter when the temperature is too low. Dry tips or scorched edges of leaves, sometimes caused by too much light or dry air, sometimes caused by excessive fertilization or dry pot soil. Branches and leaves are too long, mainly due to insufficient light, excessive nitrogen application, improper irrigation, should be transferred to the light, pruning branches. Yellow or brown spots like water stains appear on the leaves, which may be the result of excessive watering and mud splashing on the leaves and then exposing them to the sun.

How do you keep mosquito repellent grass? Xiao Bian has already introduced the breeding methods and precautions of mosquito repellent grass to everyone in the article. I hope to help you. For more relevant information, please continue to pay attention to the information of other flowers.