Will there be eggs on mosquito repellent grass?

Many people think that mosquito repellent can ward off all mosquitoes, but in fact, there are many kinds of plants, such as peppermint, night incense, yellow skin, fennel, pyrethrum and so on. But the most commonly used is geranium, but it can not be repelled by all insects, generally only for mosquitoes and flies, so there are insects that lay eggs on their plants and soil, such as butterfly larvae.

Mosquito repellent vanilla is regenerated from cell fusion and is classified as pelargonium taxonomically. Its leaf shape is beautiful, the leaf surface is smooth, and has a strong function of releasing aroma. Pollen red, umbels growing at the top of young branches, inflorescence stalks up to 20 cm long. Mosquito repellent vanilla can be cultivated indoors and outdoors in the south of China, and should be put into protected areas or indoors in winter in the north.

In recent years, the technology of raising seedlings with burrow plate is very popular in the flower circle of many countries, that is, after refining the seedlings, the tissue culture seedlings are transplanted to the container for cultivation. This method saves labor and money, and is easy to transport, and is very suitable for the production of mosquito repellent vanilla. Now the method of raising seedlings on the point plate is introduced as follows: the matrix and nutrient matrix should be prepared artificially, aseptic, loose, well drained, and artificially mixed nutrient solution should be added. It includes: peat soil is made of plant branches and leaves, moss and grass, rich in organic matter, light texture, loose and breathable, can keep fat and water well, and the pH value is 6 to 6.5, which is the main substrate for seedling cultivation. Be careful not to contain eggs and spores. Vermiculite is formed by the expansion of silicate materials at a high temperature of about 1000 ℃. It is an additive to the matrix and can improve its air permeability. However, it is easy to be damaged and its useful life shall not exceed 1 year. The crushed magmatic rock material of perlite is expanded at high temperature. it has porous structure and is an additive of matrix with light texture and good air permeability and water permeability. River sand is the additive of matrix, the drainage performance is good, the price is cheap, and it is easy to get. But the quality is heavy, the transportation is inconvenient, and the nutrition content is low. Generally, 15 × 7 acupoint trays are used in seedling raising equipment. The key technology of raising seedlings in greenhouse is environmental regulation. There are two ways: one is single-factor manual control, which regulates temperature, humidity, light and other factors through ventilation, temperature increase (drop), daylighting time, irrigation quantity, etc., and the other is automatic control of multiple factors. use computer to control a variety of indoor environmental factors. In order to reduce the cost, the author adopts single factor control at present. The heating control system mainly uses coal furnace to heat up, and the cost is low. If heating with water heating, the cost is high, but the heat energy is uniform and there is no pollution. Keeping the temperature relatively stable in the thermal insulation control system is very important for the growth of seedlings. It can be insulated by plastic film and Reed curtain in winter. The cost of plastic greenhouse is lower than that of glass greenhouse. In addition to window ventilation and cooling in summer, the cooling control system can achieve the purpose of cooling by using fan, covering sunshade net and artificial spray. Ventilation control system ventilation system includes natural ventilation and mechanical ventilation, the former is ventilated by opening the side window and the top window, and the latter is ventilated by the exhaust fan placed on the side wall. Other facilities include a movable horizontal bed, which is used for burrowing trays, plumbing and heating equipment installed under the bed, and a small plastic arch shed. The irrigation and fertilization system uses free water pressure lines for sprinkler irrigation, or sprinkler irrigation with spray cans. Temperature management the regulation of air temperature is the key to the success or failure of mosquito repellent vanilla. Too high temperature will cause a variety of diseases and affect survival, so feasible cooling measures need to be taken, including spray cooling, water curtain cooling and exhaust fan cooling. Ventilation is also an indispensable measure for seedling management. The greenhouse must be well ventilated, but the wind should not be too strong. Just keep the indoor air fresh. The above facilities are relatively cheap and are the basic guarantee for the annual production of mosquito repellent vanilla. In addition, in the low temperature season, warm water must be used to adjust the temperature of the seedling substrate. If the temperature is too low, the root will be stunted, affecting the growth of the seedling and making it become a small old seedling. Although the light-regulated mosquito repellent vanilla likes the light, the strong light will cause damage to the seedlings, so at the initial stage of planting seedlings, it is necessary to prevent direct sunlight at noon. From September to October, the temperature of direct sunlight can reach 30 ℃, so shading treatment should be adopted. From November to March of the following year, use lights to make up the light to ensure at least 8 hours of light every day in winter. Mosquito repellent vanilla is not resistant to cold, and the seedlings can only tolerate low temperature of 5 ℃. Mature seedlings can grow in the open field in the south from April to October, while in the north they can only grow in the open field from May to September. The survival rate of the newly transplanted seedlings with water management will be greatly reduced if the irrigation is not well mastered. The humidity of the substrate is too high, poor ventilation and the accumulation of toxic substances, which not only affect the rooting of seedlings, but also lead to rhizome rot. When the air humidity is low, the seedlings can not stand upright, can not fully carry out photosynthesis and respiration, and the normal physiological process is disturbed. Therefore, we should not only pay attention to the water content of the matrix, but also pay attention to the air humidity. When the water holding capacity of the substrate is 80% and the air relative humidity is more than 50%, the seedlings are easy to survive. In order to improve the survival rate, artificial spray and plastic arch shed can be used to adjust humidity, and intermittent spraying can also be used to control humidity. Plants that can prevent mosquitoes can prevent mosquitoes.

With the coming of summer, many mosquitoes have begun to become more active. What are the mosquito-resistant plants that can prevent mosquitoes in our daily life? what are the ways to prevent mosquitoes? let's take a look at them in detail.

Plants that can prevent mosquitoes.

Qilixiang: this is a small evergreen shrub with an umbrella-shaped shape, many branches, dense leaves, dense white flowers, and red berries after flowering, adding beauty to the shack. Touch its leaves, will feel a strong sweet smell, mosquito repellent effect is very good.

Cordyceps sinensis: it is a herbaceous plant of the family Compositae, which can grow up to 1 meter tall with small yellow flowers. Each flower head has hundreds of flower heads, and the outer bracts of each flower head have mucus, just like five outstretched little fingers. It is very interesting that as long as a small mosquito falls on it, it is stuck. After that, the body of the insect is slowly digested as its growth nutrition. If dust sticks off the top for a few days, it is digested without a trace, and the pot plant is placed at home to catch mosquitoes and vacuum.

Fly plum: its branches, leaves and flowers emit a sensitive smell of mosquitoes and flies, which has a strong effect of expelling mosquitoes and flies without any harm to the human body.

A way to prevent mosquitoes

1. Co-culture of fish and flowers

Grow hydroponic plants in the container at the same time put small fish, let small fish eat worm eggs, can prevent breeding into a wiggler. This method is very environmentally friendly, and at the same time, the combination of plants and small fish is a very beautiful picture, which is very suitable for families.

2. Put vitamin B2 in water

Put one or two pieces of vitamin B2 in a hydroponic container because mosquitoes hate the taste of vitamin B2. After vitamin B2 is completely dissolved in water, mosquitoes naturally stay away from hydroponic plants.

3. Change water frequently

The water in the plant container should be changed frequently. A proper change of water can not only maintain the nutrients in the water, but also keep the water clean, so that mosquito eggs cannot hatch successfully. If you are worried about changing water too frequently and damaging the roots of plants, you can drop a few drops of insecticide in the water to kill the eggs in the water, but this method is not suitable for hydroponic plants raised by fish and flowers.

4. Self-made container cover

Cut the discarded foam board to the size of the container mouth and make a hole in the middle to pass through the root of the hydroponic plant, so that the water in the container is isolated from the outside world, so that mosquitoes can not touch the water surface, and the foam board can also be replaced by gauze. This method is very suitable for hydroponic plants with slender roots, such as green pineapple, transfer bamboo, lily bamboo and so on.

If you want to know more about it, you can continue to follow the No.1 Home Network.