I make a popular science video and all the emperors learn from it!

Han dynasty.

Liu Bang has already ordered someone to clean up the surroundings.

The last time he drank and made a mistake, he regretted it.

You must know that the main grain of the Han Dynasty was also millet!

How happy Yingzheng is, how uncomfortable he feels in his heart.

"Ladies and gentlemen, write down all the words that appear on it, and not a single word will be left behind. "

The food and wine were all replaced with pen, ink, paper, and inkstone.

All the scholars held pens in one hand and recorded the words that appeared on the light curtain.

He didn't believe that there would be someone faster than him in the next Q&A session!

Shu.

Liu Chan sits upright, like the scene when he was taught by his husband when he was a child.

"Father is at ease, I will definitely live up to my father's expectations this time, seek happiness for the people of Shu, fulfill my father's last wishes, and restore the Han family!"

Liu Chan stared straight at the light curtain and showed twelve points of strength.

Where have the servants on the side seen His Majesty have such fighting spirit.

Hurriedly brought a bowl of ginseng soup.

"Your Majesty, it's cold outside, drink some ginseng soup to warm up. "

Liu Chan was unmoved.

This made Zhuge Liang look up to him.

Did you see that?

Your son is not a dou who can't be helped.

The ministers will help him become a king.

Zhuge Liang left a few tears in the corners of his eyes, but quickly relented.

Tang dynasty.

"Auxiliary, you've come just in time, come and help me. "

Li Shimin heard the report of the eunuch beside him, and immediately stepped forward to greet the eldest grandson Wuji.

"Your Majesty, the minister is late. "

The eldest grandson Wuji bowed and saluted.

He felt very guilty that he had not been able to come to His Majesty in the first place.

He was also looking up when the light curtain changed.

Taking advantage of the gap in popular science, he hurried to this side.

The two exchanged a few words.

The eldest grandson Wuji said in a solemn tone: "Your Majesty, the minister dares to guess that this is a gift from heaven. "

"The purpose is to impart knowledge. "

"It's just that I'm afraid that it's not just our Tang Dynasty that has this light curtain, and Your Majesty must defeat the enemies of other dynasties if he wants to get a reward. "

After Li Shimin heard this, he fell into deep thought.

He had a similar view.

At present, the dynasties that can confirm the existence of light curtains are the Qin Dynasty and his Tang Dynasty.

"Haha, well, if I am alone, I still feel bored. Li Shimin put his hands behind his back, "I compare myself with the emperors of other dynasties." "

...

Daming.

Zhu Yuanzhang looked at the light curtain and smacked his lips.

He was really thirsty at this time, if only he could have a few sugar canes.

"Hey, we've never seen a sugarcane grow so tall, how is this long?".

Li Shanchang took the initiative to answer and replied: "Your Majesty, this must be an improved variety, I have never seen Daming's sugarcane grow so well." "

Before he accompanied Zhu Yuanzhang to fight the world, he personally planted sugarcane in his yard.

Water, fertilize, and take care of it daily.

But in the end, the sugar cane was only more than one person tall.

"Good man, you're right, this is almost three people tall, it must be some kind of improved breed. "

Zhu Yuanzhang didn't know why, but when he saw the crops that grew so tall, he liked them in his heart.

Maybe I was hungry and scared when I was a child.

"Juba, if you want to eat sugar cane, I'll ask you to go outside the city and buy some later. "

Queen Ma looked at Zhu Yuanzhang tenderly.

No one in the world knows Zhu Yuanzhang better than her.

"It's better to be our sister. Zhu Yuanzhang will show a completely gentle side in the face of his family.

[Popular science continues.] 】

[How to make sugarcane more productive?].

[Deep ploughing is the basis for increasing sugarcane production. 】

[The specific degree of deep ploughing must be adapted to local conditions, according to the depth of the original tillage layer, soil properties, generally need about 30 cm. 】

[The requirements for sugarcane ditch, width and depth, should be adapted to local conditions, generally about 20 cm deep, the bottom of the ditch is 20-25 cm wide, and the bottom of the ditch should be flat. 】

[Fertilization and watering requirements:].

[According to the law of sugarcane fertilizer demand, the application principle of top dressing can be summarized as "three attacks and one supplement, two ends are light, and the middle is heavy". 】

[The "three attacks" are to attack seedling fertilizer, tiller fertilizer, and stem fertilizer. 】

["One supplement" is to supplement the tail fertilizer in the later stage. 】

["Light at both ends" means that the amount of fertilizer applied at the seedling stage and in the late stage of elongation should be less, and "middle heavy" means that the amount of fertilizer applied in the early stage of elongation should be more. 】

[Watering of sugarcane: Sugarcane has a large water requirement but is not waterlogg-tolerant. 】

[The general trend of water demand is "less at both ends and more in the middle". 】

[The water requirement at the germination, tillering and maturity stages is small, and the water demand at the elongation stage is large. 】

[Therefore, the sugarcane fields should be kept in a "moist" state separately. 】

[Therefore, in the early stage of sugarcane growth, although the water demand is small, irrigation should be strengthened. During the rainy season, irrigation is generally not required during the extension period. 】

[Seedling selection requirements:].

[Choose sugarcane with good growth and no harm from diseases and insects. 】

[Plant selection is carried out at the time of harvesting.] The upright, thick-stemmed, and unflowering cane plants were selected for seeding, and the mixed varieties were eliminated to ensure the purity of the improved seeds. 】

[The length of the seed is determined according to the need, and the seedlings are sufficient to leave 30-50 cm of shoots. 】

[Cutting method: cut from the lower internode of the bud 2/3, because the water and nutrients required for the germination of cane buds are first supplied by the lower internodes of the bud.

[Note: When planting, the buds should be cut off to both sides, and the cane seeds should not be cut. 】

[Seedling treatment:].

[Fresh seedlings have high water content and need to be sun-dried. When drying seeds, peel off the older leaf sheath first, leave the tender leaf sheath, and put it in the sun for 2~3 days. 】

[In production, two methods are mainly used: water soaking and lime water soaking. 】

[It is better to soak seeds in water with running water, and soak them at normal room temperature for 1~2 days. The method is to soak the whole bundle of cane seeds in clean water for 1~2 days, then pick them up, peel the leaves, and cut the seeds. 】

[Lime water soaking with a concentration of 2%, soaking for 12~24 hours is the best, the seedling soaking time at the base of the stem can be extended to 36~48 hours. The general principle is: the seedlings are tender, the soaking time is shorter when the temperature is high, and the soaking time is longer when the seedlings are old and the temperature is low. Lime water soaking can kill some powdery scale insects and germs, and has a disinfection effect. 】

.............

Ying Zheng: "The widow's eyes are dizzy, does it really want to teach me to farm the land?"

Liu Bang: "You must write it all down, and in the coming year I will pass on this knowledge to the farmers, and I will close my eyes and rest for a while." "

Han Dynasty Wenchen: "Your Majesty, we are too difficult!".

Liu Chan: "Father, I'm tired, drink some ginseng soup first, don't be angry." "

Li Shimin: "Auxiliary, you come to look at it for me, my neck is a little stiff." "

Zhao Kuangyin: "I can't stand it, who will save me?".

......

All the emperors poured out their bitterness.

This popular science time is too hardcore!

Actually really teach them useful things!

But they are emperors, and they only need the art of mastering people.

Farming, they're really not good at it.

A pop-up window suddenly appeared on the light curtain, which caught everyone off guard.

[Rush to answer the question!].

[What kind of sugar can be extracted from sugarcane?].

[Option 1: Glucose.] 】

[Option 2: Maltose.] 】

[Option 3: Fructose.] 】

[Option 4: Sucrose.] 】

[Option 5: Lactose.] 】

..............................................

PS:

Ask for a wave of data support.

After sending the book for a long time, I don't feel like there's any movement.

Flowers, comment tickets, monthly passes, etc., just have a little bit and give me some confidence.