The reporter interviewed Shan Shi University Professor of Botany Fan Shoujin, he told reporters, now there is no mosquito repellent grass, nightshade and other aromatic plants emitting aroma, harmful to the human body of the exact proof. But the aroma of these plants may make some people with allergies have an adverse reaction. Therefore, he suggests that people with allergies should preferably not place such plants in their bedrooms. In addition, Fan Shoujin said, plants and people will also breathe, in the bedroom this relatively closed space, and people will "compete" indoor oxygen, and therefore should not be placed in the bedroom too many plants. Therefore, it is not advisable to place too many plants in the bedroom. Xiangshan mosquito repellent grass is a continuous perennial herbaceous plants, also known as fumigating mosquito grass, mosquito nemesis, native to the Golden Triangle of the Yellow River Xiangshan Ridge area, the local people for hundreds of years to the Dragon Boat Festival on this day, families are to be picked up on a few mosquito repellent vanilla tea or mixed with white wine rubbed all over the body, to prevent the invasion of poisonous gas to protect the peace of the year. Henan Yucheng Mingyuan Horticultural Planting Co., Ltd. excavation, propagation and promotion of Xiangshan mosquito repellent grass is after more than 10 years of optimization and selection of new varieties, its main features are as follows: ? ? Its adult plants 60 centimeters, leaf blade sunny side oil green shade white, open light yellow flowers, the whole plant smell especially fragrant, can release a strong lemon scent every day, mosquitoes smell this fragrance containing citronella aldehyde will quietly go away, but also effective purification room fishy odors and kill harmful gases, and harmless to the human body, and its leaves (the Dragon Boat Festival pick the best) put sugar tea morning cool drink, on the nose bleeding, mouth spitting blood, women menstruation often dry patients have a good effect on the nose, mouth spitting blood. Women's menstruation often not dry patients have a certain therapeutic effect. The following is a list of some of the most important things that you can do to help your family and friends. ? To divide cuttings propagation, field, pot planting can be, the general height of 15-20 centimeters seedlings can be topped to promote the base of the part of the axillary out of the new shoots to expand the mosquito repellent herb outline, improve the effect of mosquito repellent. Office, living indoor put a pot can be mosquitoes out of the door, 15 square meters in the courtyard put a pot can drive away the size of mosquitoes in the yard. Every year in November, the climate becomes cold, mosquitoes disappear, at this time you can collect its branches and leaves dried and crushed into foam, the next year spare. Will be placed on the tile after ignition, emitting a thick aromatic smoke has a certain sterilization effect, every 10 grams of foam produced by the smoke mosquito repellent effect is equal to 10 green mosquito repellent vanilla effect, the efficacy can be increased by 10 times. It is made to smoke mosquito incense of pure natural high-level spices. From the plant experts to understand, mosquito repellent grass is from Africa's geranium plant cells and a Chinese plant cells containing chemicals called citronella aldehyde, through bioengineering technology to reorganize and produce a plant. As the mosquito repellent grass contains citronella aldehyde, can emit a special aroma, so as to achieve the effect of mosquito repellent. Municipal Garden Bureau of scientific research, an expert told reporters that the odor of plants with mosquito repellent effect is its own characteristics, but the effect may not be as good as the business claims. In addition, mosquito repellent grass smell special, like people will say incense, do not like people smell is a kind of torture. So it is recommended that you try to see if you can adapt to its odor before you buy it. http://www.huatuo.org/news/quwencao.htm Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences, experts, professors dedicated research, repeated tests, the mosquito repellent substances - citronella aldehyde through transgenic cell fusion technology to cultivate mosquito repellent vanilla, with a strong mosquito repellent effect without any toxic side effects on the human body, is a high-tech mosquito repellent It is a kind of high-tech mosquito repellent vanilla perennial woody plant. The vanilla adopts transgenic cell fusion technology, implanting the gene of "citronella aldehyde" with mosquito repellent effect into the unique Australian pasture grass with volatility, and utilizing its unique releasing cell as a carrier to release the citronella aldehyde substance into the air continuously. At the same time, it is also implanted with plant DNA (gene) structure containing clean new odor and air purification, forming a "natural evaporator", and thus fragrant, to achieve the effect of mosquito repellent, especially in the hot summer, Australian mosquito repellent grass is refreshing and relaxing. ...... The vanilla exudes the breath has a very effective mosquito repellent ability, can effectively avoid mosquito bites, prevent the spread of disease, than the traditional mosquito repellent, mosquito products are inexpensive and environmentally friendly, the human body does not have any toxic side effects, in addition, mosquito repellent vanilla lemon scent, rose fragrance, absorption of carbon dioxide, release oxygen to improve air quality, so that people live in the aroma, quietly repellent mosquitoes and does not cost a penny! In addition, its seedlings have strong plasticity, the adult branch stem lignification, has a high ornamental value. By the Chinese Academy of Sciences Institute of Genetics and Developmental Biology test experiments to monitor: when the mosquito repellent grass leaves reach 15 pieces of protection rate of up to 97.8%, each mosquito repellent grass effective mosquito repellent range of up to 15-20 square meters. Mosquito repellent performance, environmental performance have reached the international leading level. And under natural conditions, it can be volatilized in the air through the leaves, and the higher its temperature, the more obvious mosquito repellent effect. Hot summer, people do not have to close the door, burning mosquito incense, you can make the mosquitoes escape, the air is fresh and natural, indoor fragrance ....... Mosquito repellent vanilla is a perennial herb, in the sun and water has a strong vitality, normal breeding on the environment temperature has certain requirements, survival temperature above zero degrees, the higher the temperature, the more its volatile fragrance molecules, in the summer mosquito breeding period, the temperature is also the highest period, mosquito repellent vanilla at this time emitted the concentration of aroma molecules is the same as the peak period. The odor emitted is a fresh and elegant lemon flavor. In the seedling period development is very fast, half a year can grow mature, growth to two to three years after the main branch gradually lignification, growth period branches and leaves of the modeling can be artificially changed at will, has a very high ornamental value. For a long time, mosquitoes are the enemy of mankind, is the culprit of infectious diseases, can infect hepatitis, malaria, influenza and many other diseases. The United States, Brazil and other countries because of mosquitoes with viruses infected with a large number of germs, the government had to allocate huge sums of money to eliminate mosquitoes; export market space is very large, Southeast Asia has been a large number of imports of mosquito grass. The herb can replace the current market insecticides, mosquito coils, sprays and so on. It not only improves the quality of existence of the human environment, but also has a very high ornamental value. Mosquito repellent herb is a perfect combination of nature and modern high-tech bioengineering, will be the most ideal mosquito repellent products for human beings, seemingly small things can bring gospel and benefits for human beings. Mosquito repellent vanilla is suitable to be placed in homes, courtyards, hospitals, offices, living communities and other places to create a mosquito-free, fresh living space.