Most of the elderly people who have stayed at home like to plant flowers, and the flowers are wilting. This is the most headache for flower growers. There are many causes of flower wilting, such as lack of water, lack of fertilizers, lack of light, unsuitable temperature, incompatibilities with the pH contained in the soil, excessive application of chemical fertilizers, infection with viruses, pests, damage by toxic gases, etc. There are many reasons, but most of them are caused by insufficient water.
(1) Because the air is too dry to cause wilting, the way to make up for it is to spray water on the ground and leaves around the flowers 2-3 times a day;
(2) The lack of water in pots and soils is often due to the fact that the amount of water each time the flower grower waters is too small, and only enough water is poured on the soil surface. The result is that the root of the flower absorbs no water. The water taboo, the flower grower calls it "pour a half-water", so that a long time, the flowers will naturally be sluggish because of lack of water.
The way to remedy, of course, is to water pots and soils, but it should be noted that watering the pots and soils at this time can only gradually increase the amount of watering, but it cannot suddenly be poured too much. This is because when the flowering plants are wilting, Its root hair has shrunk and lost its function of absorbing water. At the same time, wilting has caused the cells to lose water. If water supply suddenly becomes excessive, the wall and the protoplasm will be separated by plasmolysis. When the plants suddenly inhale large amounts of water after drought, It will also lead to death.
Energy Products Trading Energy is to provide energy to the natural transformation of the material (mineral energy, nuclear physics energy, atmospheric circulation energy, geographical energy). Energy is the material basis of human activities. In a sense, the development of human society is inseparable from the appearance of high-quality energy and the use of advanced energy technologies. In today's world, energy development, energy and environment are issues of common concern to all people and the world as a whole, as well as an important issue in the social and economic development of our country.
Petroleum products can be divided into: petroleum fuels, petroleum solvents and chemical raw materials, lubricants, paraffin, petroleum bitumen, petroleum coke and other 6 categories. The oil industry has long been dominated by the production of fuel oil for gasoline, kerosene and industrial boilers. From the 1920s to the 1930s more advanced refinery technologies emerged, most notably invented by the French Bedeley (catalytic cracking process). The so-called catalytic cracking is the use of heat, pressure and catalyst to crack the heavy oil into a lighter oil, mainly gasoline.
Another refining method is the polymerization method, which is just the opposite of the cracking method: the synthesis of small molecules of macromolecules, the refinement of the lighter gas polymerization into gasoline and other liquids Lubricant is used in various types of vehicles, machinery and equipment to reduce friction, protection of machinery and processing of liquid or semi-solid lubricants, the main lubrication, auxiliary cooling, rust, cleaning, sealing and bufferingrole(Roab)
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