He was about to go to the greenhouse where sweet potatoes were planted, but Wei Zheng suddenly stopped and pointed to the field next to him and asked in surprise. Li Xiu looked along his fingers, but he saw that the field was covered with vegetables the size of a human head. It was Li Xiu who finally got it to go to the cabbage. After getting the two hybrid seeds this spring, Li Xiu planted them here. One of them successfully grew into cabbage, while the other failed. It looked more like kohlrabi and was much smaller.

"Haha, that is called Dabaicai, which is a vegetable that is mixed with cabbage and kohlrabi. It is not only many times larger, but it can also be preserved for winter without rotting, just like white radish!" Li Xiu introduced with a smile. Li Xiu was also very proud of the cabbage he cultivated. Maybe he could get a title like "the father of cabbage" in the future.

"There are such vegetables, but what is hybridization?" Wei Zheng couldn't help but be surprised when he heard this, and then asked in confusion. He thought the sweet potatoes and corn were shocking enough, but he didn't expect that there was something unexpected here in Li Xiu.

"The so-called hybridization is actually to let two plants pollinate each other..." Li Xiu briefly explained the principle of hybridization, and also used horses and donkeys to produce mules as an example to make it easier for Wei Zheng to understand.

"So that's it. Li Jijiu is very knowledgeable and is taught!" Wei Zheng couldn't help but show admiration to Li Xiu again after hearing this. He knew that Li Shimin attached great importance to Li Xiu and wanted to win him over again and again. In contrast, the prince was a little cold to Li Xiu. After a failure to win over, he never paid attention to Li Xiu again. After all, the prince did not lack a staff member around him. However, now it seems that Li Xiu's talent is far from comparable to ordinary staff member, so Wei Zheng secretly made up his mind at this time that he must persuade the prince to change his attitude towards Li Xiu after he went back.

Wei Zheng was very interested in this cabbage. He walked over and touched the cabbage with his own hands. He found that the cabbage was very strong. It was estimated that a cabbage would have to have two or three pounds. Moreover, it was not fully mature and might be heavier in the future. This discovery also made Wei Zheng stunned for a long time again, and he didn't know what he was thinking in his mind?

"Li Jijiu is a pity, is it a pity to just take on the idle position of Jijiu?" After a while, Wei Zheng suddenly spoke.

Li Xiu immediately became alert when he heard this. After thinking about it, he replied with a smile: "Wei Xi and Ma Yan are so heavy. I am used to being lazy. It may be okay to ask me to do some farm work. Thanks to the princess, I have already been praised by me as the position of priest. As for other official positions, it is probably difficult to be competent!"

Hearing Li Xiu's refusal, Wei Zheng just smiled and said nothing, but this made Li Xiu even more alert. Wei Zheng was famous for being stubborn. If he had made up his mind, he would probably never give up easily.

After arriving at the greenhouse, the officials under Wei Zheng measured it again. At this time, Wei Zheng looked at the structure of the greenhouse with interest. Now the weather is hot, and the silk and straw mats on it have been lifted up, so there is no need to raise fire inside. However, the overall structure of the greenhouse has not changed. Therefore, after watching for a long time, Wei Zheng really made him understand the structure of the greenhouse.

"Li Jijiu, this greenhouse raises the temperature inside with fire. Can the vegetables in the greenhouse grow normally after the temperature rises?" Wei Zheng asked curiously at this time. In winter, he also ate a lot of vegetables produced in the greenhouse, and he also heard about the greenhouse at Princess Pingyang's home.

"The greenhouse is indeed a very important reason. In addition, there is sunlight. The silk covered with greenhouses needs to be transmitted light, but the heat cannot be allowed to run out. Sometimes the sun is very good and it is not too cold. You must also peel it off and let the vegetables dry up for the sun, so that the vegetables can grow normally!" Li Xiu explained.

"So that's it. No wonder you can provide so many vegetables in winter. But your vegetables are too expensive. Except for a few powerful people, it is probably difficult for ordinary people to afford them. So can you reduce the price?" Wei Zheng nodded first, and then complained.

"Wei Xima thought it was too simple. The greenhouse requires fuel and a lot of labor is used, which will increase the cost of vegetables, so even if I want to reduce it, I can't lose money!" Li Xiu said with a helpless expression at this time. Of course, what he said was a bit exaggerated. Even if the cost is added, the income of vegetables in the greenhouse in winter is more than two or three times, and this is the reason why Princess Pingyang repeatedly asked, otherwise he and Ma would have raised the price to more than five times the cost.

"This...is true, but after Li Jijiu's cabbage promotion, the people of the Tang Dynasty would not worry about not having green vegetables in winter!" Wei Zheng did not argue with Li Xiu, but instead proposed the promotion of cabbage, which made Li Xiu a little surprised. When did Wei Zheng's temper become so good? Did the rumors he had heard before were unreliable? In fact, he was a good old man?

After the officials also measured the sweet potato fields, Li Xiu explained to them the things to pay attention to when planting sweet potatoes. In fact, sweet potatoes are solid in nature. They can survive by throwing a sweet potato vine on the ground. It is not comparable to ordinary crops that can cause illness or disaster. The only thing they are afraid of is the insects underground. Li Xiu remembers that many of the sweet potatoes harvested when he was a child have traces of being bitten by insects, so when you don’t plant sweet potatoes in winter, it is best to turn over the fields to freeze some of the insect eggs underground to death.

By the time Li Xiu finished speaking, it was already late. It was getting dark and he would definitely not be able to go back to the city. According to the rule that the visitor was a guest, Li Xiu wanted to invite Wei Zheng and others to have dinner at home, and invited them to stay at home tonight, but Wei Zheng refused. He had said before that these officials temporarily lived in nearby farmhouses, but most of them lived in Lijiazhuang. In Wei Zheng's words, they could eat and live with the people, and they could also learn some experiences in growing corn from the tenants such as Liu Boss Liu.

Faced with the old-fashioned Wei Zheng, Li Xiu had no choice but to send them to Lijiazhuang in person. However, he secretly told Liu that he did not need to specially entertain Wei Zheng and other people, and gave them whatever they usually eat. Although Lijiazhuang was rich, Liu and the others were afraid of being poor and they rarely had to eat meat for a month. So Li Xiu wanted to see how long could Wei Zheng and other people last?
Chapter completed!