Common kinds of insecticides in flower and plant conservation

Insecticides are commonly used in breeding plants to control agricultural pests and urban sanitary pests. For flower friends who are often threatened by insect pests, pesticides are necessary, but there are many kinds of pesticides on the market, how to choose and buy a more effective insecticide?

Rose (details)

I. bacterial insecticides

Bacterial insecticides are the most productive and widely used microbial insecticides which were researched and developed earlier in China. The varieties studied and applied are Bacillus thuringiensis, Pseudomonas aeruginosa, Bacillus japonicus and Bacillus globosa, among which Bacillus thuringiensis is the most representative. Bacillus thuringiensis (Bt) is a kind of important entomopathogenic bacteria which can produce parasporal crystal toxin and has a wide host spectrum. It is a kind of gastrotoxic insecticide. Bacillus thuringiensis has different degrees of toxicity to a variety of agricultural pests, including cotton bollworm, tobacco green worm, Spodoptera litura, Spodoptera litura, beet armyworm, small land tiger, rice leaf borer, corn borer, diamondback moth and tea caterpillar. In addition, it can also be used to control mosquito larvae and stored grain moth pests.

II. Fungal insecticides

Fungal insecticide is a kind of entomopathogenic fungi with wide parasitic spectrum and is a kind of contact microbial insecticide. The main species studied and used are Beauveria bassiana, Beauveria bassiana, Paecilomyces, Chlamydomonas and Verticillium. ⑴ Beauveria bassiana is a fungal insecticide with the longest research time and the largest application area in China. ⑵ Beauveria bassiana is a broad-spectrum entomopathogenic fungus. Its pest control area is larger than that of Beauveria bassiana in foreign countries, and its control effect is comparable to that of Beauveria bassiana.

You may be worried about the typical maintenance of flowers and plants in summer.

You may be worried about the typical maintenance of flowers and plants in summer.

The children who love to grow flowers and learn most can not see all kinds of conditions in their own potted plants. below, we have collected some typical flower conservation questions from our friends to analyze and answer them one by one, and we will raise flowers together.

You may be worried about the typical maintenance of flowers and plants in summer.

Question 1

How is it that one of the rich trees wilted step by step? Cause analysis

It is usually caused by uneven watering. Whether it is a step-by-step rich tree or a five-braided rich tree, each tree has its own root system. When watering, it is not evenly watered along the root, but only on one side of the tree, the water often leads to death.

The solution is that the roots of the rich tree are underdeveloped and do not like too much water. Watering should follow the principle of not drying rather than watering, rather dry than wet. Once watered, be sure to pour the small water evenly along the root of the plant, not just to one side. Question 2 what if the leaves of the herbs in plastic pots droop and wilt only two days after they are bought home?

You may be worried about the typical maintenance of flowers and plants in summer.

Question 2

What if the leaves of the herbs in plastic pots droop and wilt only two days after they are bought home?

Cause analysis

First of all, herbaceous plants have a greater demand for water than woody plants. Secondly, because most of the plastic pots used to grow flowers are highly permeable at the bottom, the bottom is basically netted, which is conducive to the breathable growth of plants to prevent rotten roots, but it is not easy to store water. Plus now the weather is relatively hot, transpiration is also great, plants will wilt as soon as they are short of water.

You may be worried about the typical maintenance of flowers and plants in summer.

The picture above shows what it looks like after being immersed in a basin for lack of water. Solution method

When the water shortage of herbaceous plants is serious, the method of immersion basin watering can be adopted. Soak the bottom of the flowerpot in water for about 10 minutes, then put it in a ventilated place to avoid strong light exposure.

You may be worried about the typical maintenance of flowers and plants in summer.

Question 3

What is the reason why the leaves are rotten and the roots are rotten when good luck is raised? Cause analysis

When the summer weather gets hotter, the corresponding frequency of plants will increase, and after watering, because the location of the plant itself is in the corner of poor ventilation, the doors and windows are also closed after going out, too much water can not be volatilized out. For a long time in such a hot and humid environment, the leaves will blacken and rot, and too much water in the roots will affect root respiration, which will also lead to root rot.

Solution method

The hot weather had better be watered in the morning and evening, the water temperature is close to the room temperature, and the environment should be ventilated after watering, otherwise the roots will rot easily. If the family care plant is watered before going out in the morning, the doors and windows are closed and the room is stuffy and not ventilated, and the roots are easy to rot, so you can choose to water in the evening, while the company maintenance can choose to water in the morning to avoid watering when the air conditioner is turned off quickly.

You may be worried about the typical maintenance of flowers and plants in summer.

Question 4

If the green treasure happiness tree is placed in a ventilated environment with scattered light, what if the leaves also curl?

Cause analysis

The green treasure happiness tree has luxuriant branches and luxuriant leaves and has a great demand for water, which is more obvious in the summer with high temperature. Especially in the position of good light and ventilation, at this time in the growing season of the green treasure happiness tree, the lack of water supply is shown on the leaves, wilting, curling, and even falling off.

Solution method

Under the condition of good ventilation and light, Lvbao Happy Tree should be watered more, and each tree must be watered and watered thoroughly along the root of the plant until the soil fully absorbs water. For the water-loving green treasure happiness tree, keep the basin soil slightly moist in summer, water immediately when you see the leaves curling or drooping, and the leaves can also be sprayed with water frequently.

You may be worried about the typical maintenance of flowers and plants in summer.

Question 5

How does the situation of succulent and rotten leaves become obvious in summer?

Cause analysis

The summer temperature is too high, the newly bought plants can not quickly adapt to the new environment, and the ventilation is not very good, resulting in soft leaves at the bottom of the succulent plant.

Solution method

Succulent plants are relatively resistant to drought, and watering must be controlled, not too much, and it is easy to grow in vain if watered too much. What you just bought can be kept at home in a ventilated place with scattered light for maintenance, and don't water the leaves. When you adapt to the new environment, you can slowly put it in a position where the light is slightly stronger. After all, succulent plants like light, it is healthier to bask in more, and pay attention to sun protection when the temperature is high.

You may be worried about the typical maintenance of flowers and plants in summer.

Question 6

Potted leaves are covered with dense eggs, how to prevent insects? Cause analysis

The white particles attached to the leaves of Phalaenopsis above are scale insects. The increase in temperature alone is very conducive to the reproduction of diseases and insect pests. In addition, the environment is not ventilated and the humidity is high, which creates breeding conditions for diseases and insects.

Solution method

Give priority to prevention and combine prevention with prevention. First of all, the leaves with serious pests should be cut off, and then insecticide is sprayed on the leaves. Usually pay attention to strengthen indoor ventilation, plants can not be placed in a completely shaded environment, regular cleaning of plant leaves.

You may be worried about the typical maintenance of flowers and plants in summer.

Summer maintenance summary 1. Summer is a period of high incidence of diseases and insect pests, small flying insects, shell insects, bacterial infections and so on. Daily maintenance needs to pay attention to humidity control, hygiene management, and regular cleaning of leaves.

two。 In general, water-loving flowers should be watered frequently, drought-loving flowers should be watered less, herbaceous flowers have high water content, transpiration is fast, and the amount of water is more than woody flowers, frequently watering in peak growing season (more refers to spring and summer), less watering in dormant period (more refers to autumn and winter), frequent watering of plants with large pots, less watering of small pots, less watering in hot days, less watering in cold days, less watering in dry days, less watering in cloudy days, good watering in light, less watering in poor light. Plastic pots of the same plant are watered more frequently than porcelain pots.

3. Plants are short of water in summer, and it is very common that the water is not ventilated. It is best to water in the morning and evening in summer. Keep the indoor air flowing after watering. The decay of leaves and roots is generally due to a lot of water, and the drying up of leaves is generally due to lack of water.

Matters needing attention in the maintenance of potted plants at home to make flowers and plants thrive

First, plants grow vigorously, and their roots need water, but they also need air. If water accumulates in the basin soil for too long, the roots will suffocate because of the lack of air. Therefore, proper watering is very important, and no stagnant water is a major principle of flower cultivation.

Second, let plants dormant.

Many indoor flowers are relatively dormant in winter or after flowering. During this period, plants need less water and fertilizer than during the vigorous growth period, and the temperature required is also lower.

It is normal for some plants to dormancy after flowering.

Some common potted flowers, such as cyclamen, big cave, chrysanthemum and so on, gradually wither and yellow and fall off after blooming, and enter the dormant period. This is the normal growth process of plants, not caused by poor maintenance.

Fourth, increase air humidity

After indoor heating in winter in the north, the air is very dry. At this time, efforts should be made to increase indoor air humidity, and methods such as spraying water around plants can be used.

Fifth, quickly deal with the problems encountered by plants

Whether you are an expert or a novice flower grower, you will encounter some problems. If insect pests are found, as long as they are treated in time, they will not cause great harm to plants. However, if infected with the virus, the treatment is more troublesome and should be isolated and destroyed as soon as possible. Too much watering will not be a big problem in the short term, but it will lead to death over a long period of time. Learn to identify early symptoms of various problems in plants. Try to avoid the use of pesticides to avoid indoor air pollution.

6. Combine a variety of plants to maintain

When many kinds of plants are cultivated together, the plants usually grow better. The ornamental effect is also very good, and you should learn how to put all kinds of plant combinations.

Learn to change basins

After potted flower cultivation for 1-2 years, the growth of most plants gradually weakened. In many cases, changing the order to a larger flowerpot can bring the plant back to life.

8. Choose the appropriate species

Choose plants that are suitable for indoor environment in order to make plants grow luxuriantly. Even flower growers can't let shade-loving plants grow well under the window of direct sunlight.

9. Prepare appropriate cultivation supplies

Appropriate cultivation supplies are good helpers for you to grow flowers, commonly used are: a watering pot with a long mouth and a fine sprinkler; sprayers to increase humidity, remove dust and control insect pests; excellent cultivation substrates, such as peat soil, river sand, moss, etc.; flowerpots, pots or sets of pots of different specifications; brown piles for climbing plants and nylon thread or wire for binding plants There are pesticides, antimicrobial agents, fertilizers, leaf brighteners, branch shears, grafting knives and so on.

Understand the special needs of cultivated plants

Check the cultivation points of each plant and meet the requirements of plant growth according to the needs.

The above is the introduction of Fuwo decoration network editor for home pot maintenance, I hope to help you. Learn more about the decoration budget, please pay attention to the Fuwo decoration network, so that the decoration of Fuwo decoration platform to save worry and money.