Xu Weiguo smiled and said: "Daughter-in-law, don't worry, I don't have any ideas about cigarettes. It's mainly because Brother Wu Sheng is curious, so I'll explain it to him!"

After hearing this, Du Yue breathed a sigh of relief, "Wei Guo, I'm not against you for smoking, I just think that cigarettes are bad for your health. You can smoke, but you must not smoke too much!"<

/p>

Xu Weiguo nodded, "I know!"

"Hurry up and take the lunch box to eat! Don't be hungry!"

"I'm going to work too."

Du Yue took the lunch box and frowned immediately, "Weiguo, this lunch box is too much today!"

You know, there were only four or five lunch boxes in the past, but today there are seven! Du Yue had a hard time carrying it with one hand!

Xu Weiguo smiled and said: "No more, no more, there are two more desserts here. After you finish your meal, you can have some more desserts. I made these myself and they don't cost a lot of money."<

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After listening to Xu Weiguo's explanation, Du Yue nodded. She naturally believed Xu Weiguo's words. She was in charge of the family's money. Although Xu Weiguo cooked more luxurious meals every day, the family's money was getting more and more expensive.

Save more!

My family has very little money from selling vegetables!

"Okay, then I'll go in first."

Du Yue picked up her lunch box and walked into the factory.

Seeing Du Yue walking into the factory, Xu Weiguo planned to ride to work.

But just as he was about to ride away, he was stopped by Wu Sheng.

"Brother Wu Sheng, do you have anything else to do?" Xu Weiguo asked with a smile.

"Brother Weiguo, there is still some time before going to work in the afternoon, why don't you tell me about how to make cigarettes!" Wu Sheng asked with great anticipation.

Seeing Wu Sheng's sincere look, Xu Weiguo looked at the time and then nodded, "Okay!"

Wu Sheng was immediately overjoyed and pulled Xu Weiguo towards the duty room, "Let's go and sit in the room. There is a stove in the room. It's warm!"

In this way, Xu Weiguo followed Wu Sheng to the security room.

Wu Sheng made another cup of tea for Xu Weiguo, "My tea is not that good, it's not as delicious as those. Brother Weiguo, don't worry about it!"

"No, no, it's quite comfortable to have a sip of hot tea in this winter." Xu Weiguo took the teacup and took a sip immediately.

"Then let's continue?"

"Keep going!" Wu Sheng nodded repeatedly.

Xu Weiguo: "Before understanding how to make cigarettes, we have to understand the types of cigarettes."

"The first type is flue-cured tobacco. Flue-cured tobacco is also called fire tube flue-cured tobacco. It has special morphological characteristics and is therefore also called Virginia type. The main characteristics of flue-cured tobacco are tall plants and sparse and even distribution of leaves. Generally, the plant height is 120-150cm.

There are 20-30 leaves on a single plant. The leaves are moderately thick and the middle part is of the best quality. It is not advisable to apply too much nitrogen fertilizer in cultivation. The leaves are naturally

It matures from bottom to top and is harvested in batches. The initial preparation method was also drying. Later, it was switched to fire tube baking. It was prepared in the baking room and turned golden yellow after baking. Its chemical composition is characterized by high sugar content. , with low protein content and medium nicotine content. Flue-cured tobacco is the type of tobacco with the largest cultivation area in my country and the world. It is the main raw material of the cigarette industry and is also used as pipe tobacco.

The second type is sun-cured tobacco. The leaves of sun-cured tobacco are prepared using sunlight. There are mainly sun-cured red tobacco and sun-cured yellow tobacco. Generally, the appearance characteristics and chemical composition of sun-cured yellow tobacco are similar to that of flue-cured tobacco, while the sun-cured red tobacco is quite different from flue-cured tobacco.

Red tobacco generally has fewer leaves and thicker mesophylls. It is harvested in batches or at once. It mostly turns dark brown after being sun-dried.

or brown, with the upper leaves having the best quality. Tobacco leaves generally have lower sugar content, higher protein and nicotine content, strong smoke flavor, and strong strength. Sun-cured tobacco is mainly used for pipe tobacco, water pipes and cigarettes, and is also used as cigar core leaves

, bunch leaves and snuff, raw materials for chewing tobacco. In addition, some sun-cured tobacco can also be processed into pesticides.

The third type is sun-cured yellow tobacco. Sun-cured yellow tobacco is divided into light-colored sun-cured yellow tobacco and dark-colored sun-cured yellow tobacco according to the leaf color. There are three preparation methods: half-dried and half-roasted, refractory and frame-dried. In general, sun-cured yellow tobacco is different from flue-cured tobacco.

It's relatively close, especially the blue sun-dried yellow smoke. In terms of appearance, chemical composition, smoke, taste, etc.

Both are similar to flue-cured tobacco. Dark sun-cured yellow tobacco is a type between light-colored sun-cured yellow tobacco and sun-cured red tobacco. Compared with light-colored sun-cured yellow tobacco, the leaves are darker, contain more nitrogen, and have lower sugar content. These

The differences, in addition to variety factors, are mainly due to different cultivation conditions and preparation methods.

The fourth type is sun-cured red tobacco, which refers to tobacco leaves that turn reddish-brown after being dried. This sun-cured red tobacco can be subdivided into old red, secondary red and dark brown. Sun-cured red tobacco is made of mixed cigarettes and dry tobacco.

The raw material of shredded and pipe tobacco. Good-quality sun-cured red tobacco is also the raw material for manufacturing cigar core leaves and inner wrappers.

The fifth type is sun-cured tobacco, which refers to tobacco leaves that are first stacked to turn yellow during preparation and then sun-dried. It can be used as raw material for dry tobacco and is extremely valuable.

The sixth type is air-cured tobacco, which is divided into light-colored air-cured tobacco and dark-colored air-cured tobacco. They are all made in a cool and ventilated place. Among them, Burley tobacco, Maryland tobacco and cigar wrap tobacco are unique and have become the most popular tobacco.

It is a category of its own. However, in our country, except for Burley tobacco as a separate type, all other air-cured tobaccos, including cigar wrapper tobacco, Maryland tobacco and other traditional air-cured tobaccos, are all classified as air-cured tobacco types.
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The seventh type is cigar wrapper. Cigar wrapper tobacco is usually cultivated in the shade and has wide leaves. The middle and lower leaves are thin and light after drying, with fine veins, fine texture, strong elasticity, and a uniform gray-brown or brown color. , has good combustibility and can be used as a raw material for cigar wrappers. The production of cigars in my country began at the beginning of this century.

The eighth type is Maryland tobacco, which is a light-colored air-conditioned tobacco. It has the characteristics of strong resistance, wide adaptability, large and thin leaves, good smoldering properties, and aromatic taste, so it can be mixed with other types of tobacco leaves.

, can improve the smoldering properties of cigarettes without disturbing the aroma and taste.

Flavor. The tar and nicotine content of Maryland tobacco are lower than that of flue-cured and burley tobacco, and its filling performance is stronger. Therefore, in mixed cigarettes, its addition can not only reduce the proportion of oriental tobacco, but also maintain the consistency of flue-cured tobacco.

Ratio to burley tobacco.

The ninth type is traditional air-cured tobacco. The area of ​​traditional air-cured tobacco in my country is small. The cultivation method of air-cured tobacco is basically the same as that of sun-dried red tobacco, but the preparation method is to hang the whole tobacco in a cool and ventilated place, and wait for the tobacco leaves to dry. Accumulation, processing and fermentation are carried out. The prepared tobacco leaves are dark brown, have sufficient oil content, strong elasticity, rich smoking flavor and good burning performance.

The tenth type is Burley tobacco. Burley tobacco is a mutant variety of Maryland dark sun-cured tobacco. In 1864, a farm first discovered a milky-yellow mutant tobacco strain in a Maryland broadleaf tobacco seedbed. Later, it was specially planted to prove that it has

It has special use value and has developed into a new type of tobacco. It has now become an important raw material for hybrid cigarettes. The stems and veins of burley tobacco are milky white, which is completely different from other tobacco. Its cultivation method is similar to that of flue-cured tobacco, but

The middle and lower leaves are required to be large and thin, suitable for planting on fertile soil, and have higher requirements for nitrogen nutrition. Burley tobacco is produced quickly, matures intensively, and can be harvested in batches or whole plants. The preparation method is to hang on

In a drying shed or drying room

Dry. Burley tobacco has higher nicotine and total nitrogen content than flue-cured tobacco, lower sugar content, thinner leaves, strong elasticity, high filling power, strong smoldering and fire-retaining ability, and good absorptive capacity, making it easy to absorb curls.

Adding ingredients during preparation.

The eleventh type of oriental cigarette, oriental cigarette is also called Turkish cigarette or Oriental cigarette. The characteristics of this type of cigarette are small plant shape and leaves, aroma, good taste, easy burning and strong filling power. It is a sun-cured tobacco incense.

An important raw material for type and mixed type, pipe tobacco

It is often mixed with tobacco. The aroma of oriental tobacco mainly comes from its glandular secretions or exudates. Its aroma is closely related to the soil, climate and cultivation methods. It is suitable for areas with little organic matter, low fertility and thin soil layers.

Planting and growing on sandy soil on hillside

The production requirements of oriental tobacco require small and thick leaves, so the planting density is high and the amount of fertilizer is generally small. In particular, nitrogen fertilizer must be controlled, phosphorus and potassium fertilizers should be applied appropriately, and no topping is required. The top leaves are the best quality tobacco leaves, and they are divided from bottom to top.

Second harvest. The modulation method is first

It is dried until it wilts and turns yellow, and then exposed to the sun. The nicotine content is low, and the other chemical components are between flue-cured tobacco and sun-cured red tobacco. The history of oriental tobacco began about a hundred years after the discovery of the American continent, and the main production areas are in the Mediterranean.

Eastern coastal zone.

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The twelfth type of tobacco, the fundamental difference between common tobacco and the above types of tobacco is that they belong to different species in plant taxonomy, and their biological characteristics are very different. Generally, the plant height is 50-100cm, with 10-15 leaves.

, leaves are small, oval

Or heart-shaped, with petioles; the flower color is green and yellow, and the seeds are also large; the growth period is short, cold-resistant, and it is mostly planted in high latitudes, high altitudes and areas with short frost-free periods. The total nicotine, total nitrogen and protein of general yellow flower tobacco

The content is higher, but the sugar content is lower.

The smell of smoke is strong. According to research, Nicotiana tabacum was cultivated before Columbus discovered the New World. It originated in Bolivia, Peru and the Ecuadorian Plateau, and is now widely planted in western Asia. The former Soviet Union planted the most species of Nicotiana tabacum, which they called Toad.

Heyan

Our country also has a long history of cultivating yellow flower smoke and is widely distributed. Among the products, Lanzhou shisha, Guandong Tobacco and Yinli Tobacco are the most famous. Some countries, such as Limeili, grow yellow flower smoke, but they are not used for smoking.

, only for the manufacture of nicotine sulfate.

The thirteenth type of smoking is also called open fire tobacco. It is one of the ancient methods of preparing tobacco leaves in America. The method is to light a coal fire or firewood directly in the room, and the tobacco leaves are hung in the curing room and are in direct contact with the fire, so it is called smoking.

.Tobacco leaves are in direct contact with smoke. After modulation, they are dark in color and have a strong creosote and other special aromas. They are used as one of the raw materials when rolling cigarettes.

1. It is also used together when making chewing tobacco, snuff and cigars. Smoking varieties generally use dark air-cured tobacco varieties, and sometimes flue-cured tobacco varieties are suitable for cultivation in heavier soil, rows, and plant spacing.

The top is low, with 12-16 leaves. Its chemical composition is high in nitrogen, especially nicotine, and low in sugar.

The fourteenth type of mixed cigarettes, also known as American cigarettes. "Camel" is the first American mixed cigarette brand. The formula of mixed cigarettes is composed of flue-cured tobacco, sun-cured tobacco, air-cured tobacco and other tobacco leaves. It is characterized by rich aroma and smoke. The flavor is mellow and the cut tobacco is brownish-red in color. While the tar is relatively low, it also gives smokers a greater sense of satisfaction."

After hearing this, Wu Sheng's eyes widened with shock on his face, and he said blankly: "I didn't expect that there are fourteen types of cigarettes! There must be too much knowledge in these cigarettes!"

Xu Weiguo nodded, "Yes, it does take a lot of effort to figure out cigarettes!"

Wu Sheng asked again: "Brother Weiguo, why do we men like to smoke cigarettes? It's not fun if we don't smoke! And the more we smoke, the harder we smoke. I can't even think about not smoking."

Xu Weiguo smiled and said: "You see, you have asked the right person!"

"Smoking will have an impact on the brain. Nicotine diffuses throughout the body through the lung mucosa and oral mucosa. After entering the brain, nicotine can imitate the effect of acetylcholine, a central neurotransmitter, and bind to nicotine receptors on the surfaces of many neurons. Nicotine affects The central nervous system has a stimulating effect, especially in the "reward circuit". It can release more dopamine by activating relevant nerves. The halamine and norhalamine contained in tobacco can inhibit catabolic enzymes. The activity of dopamine, serotonin and norepinephrine in the synapse is maintained at a high concentration level. As the maintenance effects of dopamine, serotonin and norepinephrine are strengthened, the person becomes more awake, pay attention The energy is more concentrated, which makes it easier to relieve worries and endure hunger. Tobacco can cause nausea, dizziness, and headaches, which is why everyone feels more energetic after smoking!"

"Smoking also involves tolerance and dependence. Regular smoking will keep the nicotine content in the brain at a high level. Neurogenic receptors are becoming less and less sensitive to nicotine, and their stimulating effect on dopamine release is also weakened. The original The amount of cigarettes can no longer satisfy the smoker's pleasure, and the smoker develops tolerance to nicotine. When the smoker stops smoking for several hours, the nicotine content in the body decreases, and the neuronal receptors become extremely sensitive. At this time, the concentration of acetylcholine The activity exceeds the normal level, making the smoker become irritable and want to smoke. At this time, if you can smoke a cigarette, it can over-stimulate the neurogen receptors and promote the release of a large amount of dopamine. Through this phenomenon, we can understand why every day The first cigarette can bring great pleasure to the "old smoker", and the smoker will fall into a vicious cycle of increasing addiction. This is also the reason why he smokes more and more and cannot quit!"

"Nicotine...what is this?" Wu Sheng asked hurriedly.

"Nicotine, commonly known as nicotine, is an organic compound that is highly toxic. It is an alkaloid that exists in Solanaceae plants and is also an important component of tobacco. People inhale nicotine when they smoke!" Xu Weiguo explained Tao.

"It's extremely poisonous...this..." Wu Sheng was shocked, "If it's extremely poisonous, why do you rarely hear people smoking to death!"

"Ahem, your idea is actually wrong. Just because you haven't heard it doesn't mean it doesn't exist!" Xu Weiguo continued: "Although nicotine is highly toxic, if the intake is not large, it will not cause immediate death!

This is a cumulative process!"

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