I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

Liu Tan didn't tell Li Xi that he was going to do it himself. He was worried that Li Xi would turn around and persuade him not to be a lowly servant.

He even drove the people around him out of the greenhouse. Their only role was probably to communicate the temperature increase or decrease order for Liu Tan to the outside.

But grafting is not cooking, and it does not require such precise control. After placing the Liu Tan version of the thermometer indoors, control the temperature and basically let it be maintained outside.

Liu Tan put on the gloves specially made for Fu Yu and the others to sew, and began to observe the local grape seedlings. Finally, he selected a few that looked the strongest, and prepared to use different methods for grafting, and then saw which one was the most suitable.

Because there are only three kinds of grafting methods that can be used at present, but Liu Tan asked for five seedlings, three of which were experimentally grafted, and the other two were to see if they could grow smoothly in the greenhouse.

Liu Tan put the three seedlings together with the grape seedlings selected as the rootstock, and put aside the knife, the bamboo sticks that were cut into the same shape as the stems of the seedlings, and some white cloth.

The first thing he did was the grafting method. In fact, in his opinion, according to the existing conditions, the grafting method should have the highest success rate. After all, the two plants of the grafting method are still growing on their respective mother stems. Success should also not result in the death of the seedlings.

But after all, he is not a professional to do this, so he will try everything in the end.

He is also a novice. After choosing the branches at the beginning, he cut off one-third of the thickness of the branches on both sides. He was sweating profusely. In the end, he shook his hands and cut a little more.

Fortunately, even if there are more cuts, there is still half of it, but it can continue.

As for the beveled noodles, since there was no precise scale, he just chose the length of his index fingernail.

After all the cuts are finished, the wounds on both sides are tied tightly with white cloth, and the next step is to wait for the wounds to heal and survive.

Liu Tan wiped the sweat off his forehead after finishing. Although he didn't know the suitable temperature for grapes, he knew the approximate range of grapes' flowering and fruiting. If he calculated it, the temperature should not be too high during the germination period, and it should be kept at [-] degrees of ground temperature. Left and right will do.

This temperature is actually a relatively suitable temperature for human beings, but it can't stand the fact that the greenhouse is not very ventilated and the humidity is high.

Liu Tan raised his neckline and slapped it, ready to make persistent efforts to finish the remaining two methods. However, to be honest, each of the remaining two methods is a little more difficult than the connection method.

The splicing method needs to remove the growth point of the rootstock and the heart leaf, and then cut a slit between the two leaves, and the tassels that need to be joined also need to be cut into a double-sided wedge shape. Fortunately, after the experience just now, Liu Tan's hands are steady this time a lot of.

As for the insertion method, the precision required is higher. Simply speaking, it is to drill a hole on the rootstock, and then cut the roots of the seedlings into a shape that fits perfectly and insert them in. The insertion also includes straight insertion and oblique insertion. This Liu Tan said that it is enough to insert it anyway, and don't care about so many details.

After finishing everything, Liu Tan ordered people to look at it from time to time. Of course, the most important thing was to record the growth status of these grapes according to his instructions. He didn't want to see the records with the characteristics of the times anymore. Two big.

Liu Tan has just finished the grafting, and Li Buyan is going to invite him out for a drink.

Liu Tan also felt that the number of trips out of the palace since the crossing was very few, and he always wanted to go for a stroll but couldn't make it, so he nodded in agreement.

Li Buyan worked hard, and directly chose the best wine shop in Chang'an, sitting in the private room on the second floor, Liu Tan watched as Li Buyan poured him a glass of purple-red liquid.

Li Buyan said one-sidedly: "Try it, this is wine from the Western Regions, except for the tributes, only this wine shop has it."

Liu Tan was a bit curious, but after he picked up the glass and took a sip, he managed to control the expression on his face with great effort—this is not wine, it is simply grape juice!

This taste is probably similar to the grape juice fermented by himself in later generations, but it is not as good. Of course, this may not be a problem of craftsmanship, but more likely a problem of variety.

Liu Tan nodded and said, "The taste is not bad."

Just as he was saying this, he suddenly heard someone outside saying: "The people of Wusun have entered the capital, do you want to go and see?"

After hearing this, Liu Tan was a little puzzled: "From Wusun? Hasn't Wusun Xiao Kunmi been here all the time?"

Li Buyi sighed and said, "This is from the Great Wusun. I heard that the Great Wusun is here to propose marriage."

Liu Tan was stunned for a moment, and after searching in his mind for a long time, he realized that Liu Che had indeed sent a princess to marry Wusun, and also sent two princesses there one after another. According to the year, it was indeed the sixth year of Yuanfeng. It was also the first year after Wei Qing's death.

Thinking of this, Liu Tan couldn't help but want to sigh. After the elite card in Liu Che's hand was gone, he couldn't be as stubborn as before.

Liu Tan turned his head and didn't want to think about Wusun anymore, mainly because it was useless for him to think, but when he turned his head, he saw Li Buyan's expression became more bitter, and couldn't help asking: "What's wrong? You Don't you deal with Wusun's people?"

Li Buyan shook his head: "Of course not, it's just...the people of Wusun have all entered the capital, seeing that Zhengdan is getting closer, but Father's errands still haven't progressed, hey."

Liu Tan asked, "What does this have to do with Zhengdan?"

Li Buyi hesitated for a moment and said: "You shouldn't have kept this matter from His Highness, but Father was afraid that His Highness would get anxious if he found out, so he didn't let us tell. If Your Highness knows, please don't tell my father that I said it." ah."

Liu Tan was even more curious: "Tell me."

Li Buyan said in a low voice: "Your Majesty has an order, there must be a result before Zhengdan."

After hearing this, Liu Tan was full of question marks: "What does this result... mean?"

Li Buyan thought for a while and said, "Probably refers to the fruiting of grapes."

Liu Tan: ...

He bowed his head and counted the days, and it is still October [-]st this year, and they are now in the middle of September, half a month... even if the gods come, the grapes cannot be allowed to bloom and bear fruit for half a month!

Not to mention that it is still unknown whether those grape seedlings can survive.

Liu Tan was silent for a while before whispering: "Don't worry, I will ask Father for a favor later, and let your father come to my palace to do things."

Li Buyan was shocked: "Your Highness, can't you save me?"

Liu Tanyu said earnestly: "Even if there is a miracle now, there is no way to let the grapes bear fruit in half a month."

There is no need for Li Xi to keep this news from him. After all, even if he found out, he wouldn't be in a hurry—how can he be in a hurry when he can't change it?

Li Buyan took a sip of wine, said with a wry smile: "That's right, unless there is a miracle in this kind of thing, hey... If it can be extended for a period of time, it will be fine, Dad took over this matter for more than a month, logically speaking, it shouldn't be him Unfortunately, Your Majesty..."

Li Buyan shut his mouth at this point, he is not qualified to discuss the emperor's orders, especially in front of the prince.

When Liu Tan heard him talking about the grace period, a flash of inspiration suddenly came to his mind. If he remembered correctly, it was during the period of Emperor Wu of the Han Dynasty that the day of Zhengdan in the Han Dynasty was changed to January [-]st, and it was also done in the sixth year of Yuanfeng.

And until now there is no news that the Zhengdan date has changed, Liu Tan was also a little unsure, so he just said: "Maybe there will be a grace period, what if the Zhengdan date is changed?"

Li Buyan laughed: "Your Highness is really whimsical, how can the days of Zhengdan be changed?"

Liu Tan didn't say he was dead, but just smiled and said: "It's not certain, that's all, don't worry, even if you really want to ask the crime, it won't be during the Zhengdan season. Looking back, I see that the father is in a good mood that day, so I begged him." Give it a try."

Li Buyi was overjoyed after hearing this, and quickly saluted and said, "Thank you, Your Highness."

Liu Tan waved his hand: "Don't count on me too much, it's possible if the crown prince or Fuling go, but I... you'd better not have too much hope."

After hearing this, Li Buyan's expression slowly softened, he seemed to be very sad for Liu Tan, he said in a low voice, "It's because the parents at home are too selfish, otherwise Your Highness wouldn't be..."

Liu Tan was stunned for a moment before realizing that he was talking about concealing his identity at the beginning, so he couldn't help but shook his head and said, "It has nothing to do with you."

Of course, he didn't think it had something to do with Chen Ajiao, well, if he had to say that there was a little bit.

But even if it is a biological child who has not seen each other for decades, it is impossible for the two parties to be very close as soon as they meet.

Liu Tan comforted Li Buyi and returned to the palace after a few words.

In the following days, Liu Tan has been paying attention to the situation of the grape seedlings. When he saw the records of the people below, it was written that the seedlings were severely soaked due to too much juice from the wound of the rootstock, and there was a tendency to mildew. Just know that things are going to be bad.

Liu Tan hurried over to have a look, but when he got there, he found that almost all the grafting parts were in bad condition.

The seedlings of the plugging and splitting methods are basically hopeless, but the grafting method is much better because only one of them is used.

Liu Tan had no choice but to have the branches separated so that he could carefully observe what went wrong.

After separating, he saw that there was indeed a lot of juice in the wound of the rootstock, and not only that, there were even small bulges around it that were not obvious.

Liu Tan looked at this little bulge and always felt familiar. After thinking about it for a long time, he couldn't help but slap his thigh. It's over. Isn't this a symptom of bacterial infection?

So the question is, why do bacterial infections occur?

Liu Tan lowered his head and pondered for a while, and finally remembered that when he was grafting himself, he wiped the knives and the like with alcohol, and even the wounds of the branches were slightly sterilized with diluted alcohol.

But this time when he operated, he completely forgot about disinfection.

So the question is, where is the alcohol...?

Even the alcohol content is not high these days, and it is not enough to use it for disinfection, let alone alcohol.

It's a pity that just disinfecting the knife does not guarantee that it will not be completely infected by fungi, and the wounds of the branches must also be disinfected with diluted alcohol.

Otherwise, if you just sterilize the knives, you can directly sterilize it at high temperature, so why use alcohol!

However, if you want to make alcohol, you must first get out the still.

Liu Tan covered his face with one hand and felt very tired: How many things would he have to produce in order to grow a grape.