Upon hearing this, Liu Wei, who was sitting in the passenger seat, immediately stood up with his ears.
"Okay, but it's not like learning from me. I don't know much about botany and wheat hybridization technology. I just read some basic related knowledge and we can discuss and study it together." Yu Hua heard this and smiled, not surprised.
Wan asked: "But, you are not going to build machine tools?"
Lin Wan's talent lies in the field of mechanical equipment. After long-term contacts and exchanges, he discovered that Lin Wan's direction is to engage in the research and development of machine tools and equipment.
The importance of machine tools is self-evident, and industrial development cannot be separated from the support of machine tools.
However, one is machine tools, and the other is hybridization of plants and wheat. The span between the two disciplines is so large that it can be said that they cannot be compared with eight poles.
"Learning botany and wheat hybridization technology does not affect my research in the field of machine tools. I believe I can do it. Although I am not as smart as you, I am at least better than 99% of my peers." Lin Wan's face was firm and her eyes were shining.
A touch of confidence.
Yu Hua looked at Lin Wan who was full of confidence, nodded with a smile, and gave a thumbs up with his right hand. He was worthy of being the top student in the school for a long time. His momentum and confidence alone were unmatched by many.
Just do what you say, your execution ability is full, and Yu Hua happened to be interested in informing you about the hybrid technology, so you started taking classes directly.
"In this case, let's seize the time and let me talk about my views on hybridization technology first. I think the key to wheat hybridization is to use artificial sexual hybridization to 'remove males and retain females', rather than asexual hybridization."
"Since wheat is a self-pollinated crop, it is hermaphrodite. If you want to successfully achieve hybridization, you must emasculate the female parent and allow the male parent to pollinate. This process is very difficult and the male flowers need to be removed manually."
"The first generation of high-yield wheat should have excellent traits such as early maturity, high yield, strong tillering ability, and a thousand-grain weight of about 30 grams. It should be divided into winter and spring categories, and the yield per mu should be stable at more than 250 kilograms."
"Well, how to solve stripe rust?"
Stripe rust can be called the black death of wheat. Once infected, it may cause large-scale production losses or even crop failure.
"This is the focus of the cultivation of second-generation high-yield wheat. You can introduce varieties with strong disease resistance and cross them to obtain early maturity, high yield and disease resistance. The yield per mu is stable at more than 300 kilograms. Our top priority is to solve the problem of high yield first, and then solve the problem of disease resistance.
.”
"I understand. Let me take a note. By the way, what does tillering force mean?"
"Tillering power refers to the branching of plants such as Gramineae below the ground or near the ground, which generally means heading. Tillers that are heading and strong in the early stage are called effective tillers, and those that are unable to head or are not heading but are not strong in the late stage are called ineffective tillers.
.”
One person was explaining and the other was taking notes. Liu Wei did not disturb Lin Wan, who was diligently learning valuable knowledge, nor Yu Hua, who was like a teacher. He had no knowledge of professional knowledge, so he only knew one thing - keep quiet.
The Buick car drove smoothly. Beiping City is about 260 miles away from Baiyangdian Zhaobeikou, and it will take some time to reach the destination.
The farther away from Peiping, the more primitive the surroundings become, and the roads gradually become rough and bumpy. There are no cement roads these days. The better ones are cinder roads and gravel roads. The most common ones are dirt roads. The road infrastructure construction is basically zero.
Cement, which is a real strategic material, is very scarce. Only the capital and Nanjing, as well as a few major cities such as Peking and Tianjin have paved cement roads and asphalt roads.
Regarding roads, it is actually very interesting. The highways of the Republic of China first began with the "Regulations on Road Construction" issued by the Beiyang Government in 1919. Later, in 1927, the Nanjing Railway Department issued road construction standards. The embankment was 12 meters wide, the roadbed was 9 meters wide, and the road surface was divided into
There are four levels of A, B, C and D. The materials used are gravel, gravel, river mud and soil respectively.
Although the road remains at the level of gravel and dirt roads, there are finally construction standards.
Later, in 1932, the National Government held the "Seven Provincial Highway Conference" in Hankou to formulate the engineering standards for connecting highways in each province. After review and revision by the National Economic Commission, they were announced on July 20, 1934 as the "National Economic Commission Highway Engineering Guidelines."
This time the road engineering technical standards are getting closer to perfection, stipulating that the road surface is divided into six levels: dirt road, gravel road, mud-crushed gravel road, gravel road, brick road, and asphalt cement road. The roadbed width is 12 meters or 9 meters for the main line and 9 meters for the branch line.
meters or 7.5 meters, the bridge load capacity is 12 tons and 7.5 tons.
From 1919 to 1934, it took a full 15 years for the Nationalist Government to improve highway construction standards on paper. However, the things on paper were all bluffs, and in fact they were all dirt roads.
For the Republic of China, the development of every village in China was a century-old project that could not be completed in a lifetime. It could not be accomplished even with the efforts of the whole country.
Lin Wan taught Lin Wan along the way. As the former number one in the school, Lin Wan had extremely high talent and memory. She could quickly remember what Yu Hua said, draw inferences from one example, and occasionally put forward targeted suggestions and questions. As time went by, she continued to teach Lin Wan.
As time went by, after talking about a small amount of plant and agricultural technology knowledge, Yu Hua found helplessly that he seemed to have nothing to talk about.
There is no way around it. Yu Hua really doesn’t know much about plants and agriculture, and his understanding of hybrid wheat is even rarer, basically staying at the level of principles.
Mendel's laws of inheritance, segregation of traits, asexual hybridization, sexual hybridization, male sterile strains, etc. are what he understands.
More than ordinary people, but definitely not as good as serious botanists.
Well, he is a bit too confident. He should be inferior to the freshmen of agricultural universities in later generations. In-depth technical and professional knowledge in the agricultural field also requires systematic study.
"The main characteristic of plant male sterility is that the stamens develop abnormally and cannot produce pollen with normal functions, but the pistils develop normally and can receive normal pollen for fertilization and fruiting. Finding male sterile plants is the key to realizing large-scale hybrid wheat applications.
, This is roughly what I know. For the next learning, you need a real teacher." Yu Hua finished explaining the importance and value of male sterile strains, as well as basic concepts, and ended the explanation of this journey.
This knowledge may not seem like much, but in fact, it is all valuable experimental experience summarized by later generations. Rice and wheat are both self-pollinated crops. Artificial emasculation may seem simple, but there are hundreds of thousands of wheat plants in one acre of land.
It is impossible to emasculate all the animals within a year.
Therefore, it is crucial to find stable male-sterile strains to break self-fertilization in wheat.
Lin Wan took notes, raised her right hand, took up some black hair and put it behind her ear, her eyes showing curiosity: "Male sterile strain... this kind of individual should be difficult to find."
"It's more than difficult. From a probability perspective, about one hundred thousand plants will produce one male sterile plant, and you have to find it during the self-pollination period. The time is very short, which is more demanding than finding a needle in a haystack." Yu Hua shook his head. If
It is said that the difficulty of finding natural hybrid parents of wheat is ten, then the difficulty of finding male sterile strains is as high as one hundred.
Finding male-sterile strains is an extremely time-consuming and tedious task, as is the case with wheat and rice. Later generations, Mr. Yuan spent several years to find a natural male-sterile strain. After artificial pollination, it produced hundreds of first-class seeds.
However, in a later experiment, more than 700 sterile seedlings were all uprooted and destroyed. If the remaining five seedlings had not been found in an abandoned well, super hybrid rice would never have been born.
"Nothing is difficult in the world, as long as there are people who are willing, I will continue to do it no matter how difficult it is, Yu Hua, thank you." Lin Wan did not back down after hearing what Yu Hua told her, but her expression became more determined.
"Let's encourage each other." Yu Hua raised his right hand. The food problem cannot be ignored. However, cultivating high-yielding wheat is too time-consuming and laborious. Human energy is limited. He cannot devote himself to the field of breeding. He can only hope that Lin Wan can cultivate it.
Produce qualified high-yielding wheat.
"Let's encourage each other."
Lin Wan smiled, raised her right hand, and high-fived Yu Hua's right hand.
The weather was getting hotter and hotter, and around five o'clock in the afternoon, it was already dusk. Along with a burst of billowing smoke and dust, the Buick entered Zhaobeikou along the dirt road.
Gu Heng
Zhaobeikou is close to the east bank of Baiyangdian, facing Tianjin to the east, Baoding to the west, and Peiping to the north. It has an important geographical location and is extremely rich in water resources.
Today, the vast majority of Zhaobeikou is rural and has not been developed. The Yu's Seven Pagoda Experimental Site is located in Liu Village, south of Zhaobeikou.
The Buick arrived at the entrance of Liu Village and stopped steadily.
The group arrived at their destination, got off the car and entered the village. Yu Hua curiously looked at the rural areas of North China in 1937. Most of the surrounding areas were houses with mud walls, but there were a few brick houses. There were no infrastructure such as wires at all, and the economy was extremely backward.
Not far away stood several unkempt children, both men and women, with wide eyes and cautiously looking at Yu Hua and his party.
Yu Hua looked at these children wearing patched clothes and sighed in his heart. The reason he sighed was not because these children were wearing patched clothes, but because these children had reached the age of education but could not enter the school.
The reason why there were so many great masters in the Republic of China is because of the extremely high illiteracy rate in China.
Perhaps among these children, there are talented scientific researchers, but because they cannot receive a complete education, they can only make a living by farming.
"The experimental site is in front. All the purchased machinery, equipment and materials have been transported and placed in those brick buildings. Thirty tons of sulfur are piled near the experimental site. About ten welders you asked me to find have all arrived.
, these people in the village are all people I can trust." After entering the village, Lin Wan, the deputy team leader, slowly introduced them.
"Jin Yu, I want to spend money to buy some books and set up a library in the village so that these little guys can read the books. The money will go to my personal account and I will give you 10 yuan." Yu Hua stared at the person hiding behind the corner, full of curiosity.
and the children with awed eyes said softly.
In the eyes of rich people, 10 yuan may only be enough for a meal, but it can buy books that change their destiny.
Although he couldn't change the situation in front of him, Yu Hua still chose to do something, at least, let these little guys have access to something that can change their destiny.
Knowledge, the crystallization of human wisdom.
Since ancient times, the value of knowledge has been inestimable, completely equivalent to life, and even some advanced knowledge far exceeds the importance of life.
"Library? That's a good idea. Then I'll give you 10 yuan."
Lin Wan was thoughtful, her eyes lit up involuntarily, she nodded in agreement, then turned to Liu Wei and said, "Old Liu, I'm sorry to bother you."
"I've written it down." Liu Wei was deeply touched, seeing another side of Yu Hua again, and nodded silently.
Not long after the group entered the village, a figure of a strong man appeared and greeted them.
"Miss, Mr. Yu, Butler Liu." The man stopped in front of him, his forehead was covered with sweat, and he greeted everyone in turn.
"This is the person in charge of the construction of the experimental site, He Wenlong." Liu Wei introduced in due course.
Yu Hua took a step forward, showed a friendly and natural smile, and stretched out his right hand towards He Wenlong: "Hello, Master He."
"Hello, Mr. Yu."
He Wenlong was obviously flattered. He didn't expect Yu Hua to be so polite. He quickly stretched out his right hand, shook his hands, and then let go.
"Just call me Classmate Yu. Master He, please take us to the experimental site." Yu Hua responded.
He Wenlong, who had been notified long ago, nodded repeatedly: "Okay, classmate Yu, Miss, please come with me. The foundation of the experimental site is almost completed."
After saying that, he turned around and walked towards the village.
Yu Hua and his party followed He Wenlong's footsteps to the experimental site and passed through the center of the village. Soon a lively scene came into view. Hundreds of workers formed a circle to ram, and lifted the heavy wooden ram through ropes until it reached the highest point.
Then he pulled it down hard, causing the heavy wooden tamping hammer to hit the ground and tamping the foundation.
"Bang bang bang!" The dull banging sound continued to be heard, and the builders were singing and observing the ground.
The foundation area is about 150 square meters and is almost completed. On the left side of the foundation is piled with sulfur, and on the right side is a newly dug pool. The pool is connected to a small river dozens of meters away, and the small river is connected to Baiyangdian.
"Classmate Yu, we are all doing it according to your requirements. Can you see if there is anything that needs improvement?" The group came to the outside of the foundation construction site. He Wenlong stood in front and said respectfully to Yu Hua.
There is nothing to look down on the white-faced scholar, and there is nothing to sell his qualifications. He Wenlong clearly understands that the power of life and death in the entire experimental site is decided by the young genius student in front of him.
"All I can say is...it's great to have money. Jin Yu, I'd like to ask if you have any mines at home?" Yu Hua shook his head, not dissatisfied at all with the foundation in front of him.
Not satisfied?
No.
In the era of relying solely on manpower, the foundation was completed in a few days, with hundreds of workers. Regarding such behavior, Yu Hua could only say that it was great to have money.
Lin Wan's mouth twitched, her face speechless: "..."
I really want to hit someone.
"Let's go back and prepare to make the core container." After viewing the foundation construction site and confirming that there was no problem with the quality, Yu Hua relaxed and said to Jin Yu.
Lin Wan nodded, and then the group returned to the village and immediately started working. Lin Wan found the design drawings of the core container that had been transported to Liu Village not long ago. Butler Liu was responsible for finding people, arranging for ten welders to be present, and responsible for generating electricity.
Prepare to build the core container.
"Buzz!" Soon after, the noise of the diesel generator working came from the village. This is a diesel engine imported from Germany. The manufacturer is MAN. It can stably provide 50 Hz 15KW power. The power output is stable and the work is reliable. The only shortcoming is
It's just expensive.
Generally, electric welding machines do not need this thing at all, because the cost is too high and they cannot afford it. However, as a submerged arc welding machine, this thing must be used to power the machine to meet the needs of use.
Electricity is the foundation of modern industry and electronic technology. Without electricity, human beings would instantly return to the primitive world.