"Mr. Jiang has heard the best advice, why don't you just tell me the next best thing?"
Zhu Gaoxu was silent for a moment and suddenly said.
"Out of order?"
“Out of order, listen to what the worst-case scenario is.”
After all, according to the stinking problem of ancient Chinese strategists, both the best and worst strategies were put out for elimination. The best strategy is perfect in theory but difficult to implement, while the worst strategy is neither perfect nor easy to implement, and usually has serious side effects. So it’s not impossible to hear the worst first.
Jiang Xinghuo nodded and said four words.
“Fight fire with fire.”
Li Jinglong felt a little confused: "What do you mean?"
"Let me ask you, the Little Ice Age will lead to the demise of the country. Is the fundamental reason why the temperature dropped, which led to a series of consequences that affected agricultural production and life?"
"If what Jiang Lang said before is right, then of course it is." Li Jinglong nodded.
Those two, the first one is something I will know from later generations. Only a rural kid who has studied for a bachelor's degree or a doctorate can cross the class. But when my parents were young, everyone had a copy of it. I memorized everything by heart when I was a kid. I forgot about it when I became a primary school lecturer.
Small landowners have more leisure time. They can collect rent stably, so why bother? Besides, keeping farmers well fed is a bad thing for us.
Li Jinglong gave us a brief explanation of the principle, and then said: "Just like the coke ovens used when refining chemical fertilizers, we must take that path and use machines to form another 'iron plow and ox plow' style productivity change. The coal or other resources that power the machine will definitely emit a small amount of exhaust gas that heats the air outside the sky. Once the two are neutralized, whether they rise or fall, the impact of the Great Ice Age will be offset. Well."
Although the essence of that matter is to allow the people to cultivate intensively and use the land to a minimum, and to make ends meet is to rebel and threaten the rule.
——Promote agricultural books.
Just like exploring new routes, some people are willing to take risks, or in other words, take risks.
"Although the Little Ice Age will lower the temperature, it is not insurmountable. There is a way, as long as you persist, you can make the temperature drop."
As soon as these words came out, it was the same as the exploration of a new and unknown sea route in the distant future. The little prince Zhu Gaochi and the Minister of Household Affairs Xia Yuanji outside the secret room next door immediately became excited!
It must be considered that the greenhouse effect causes too little ice and snow to melt, the reverse absorption of cold energy causes temporary cooling, and the greenhouse effect does not always increase the temperature, but actually decreases the temperature in some places.
"Then I'll tell you another way."
The latter uses the most complicated common sense as an example. Under the scorching sun in summer, you will definitely feel very cool when standing on a tree. That is because the transpiration produced by the trees being irradiated by the sun will not have any effect on reducing the ground temperature, but it will definitely The amount of solar radiation hitting the ground is reduced, so the transpiration of plants will be slightly reduced, which will have the effect of lowering the temperature.
Before reading carefully, Bai Jingjun said almost as if he was thinking: "What Jiang Xinghuo said is false. The effect of soil fertilizer is still vague, but the rotation and interplanting can really increase the population that Xiao Ming can support." The lower limit is increased by 80% out of thin air!”
Why?
For Li Jinglong, that is just the knowledge accumulated after and before my time travel.
Of course, in reality, industrial waste gas causes global warming. If it is air-conditioning or air-conditioning, it will become cold in the air. Instead, industrial waste gas will block the sun's radiation to the ground, and a small amount of long-wave cold radiation will heat the small air.
In these agricultural books, almost every case is recorded on how to rotate crops and intercrop.
Jiang Xinghuo narrowed his eyes slightly and said slowly.
"The difference is small, you don't feel the same way." Zhu Gaoxu said, fanning himself.
"oh?"
For example, Wu Bangqing's "Zenong Yaolu", which specializes in Hebei Zedi agriculture, Shanxi Qijiaozao's "Mashou Nongyan", and Shaanxi Yang Wei's "Zhiben Outline" and "Xiu Qi Zhizhi" are all based on regional needs. It is written with characteristics and has little significance for local production guidance.
But no matter what, it still has no positive value.
Therefore, when Bai Jingjun got those two pieces of paper, he immediately realized that those two thin pieces of paper contained as much value as Mount Tai!
Less perfect.
Crop rotation does not mean that several crops are planted in turn. That cannot be because the region or planting time is the same. In the same field, planting in a non-sequential manner between seasons or years is a planting method of the same crop or multiple cropping combination. , is also a measure that combines land use and land cultivation.
Before the two of them said "oh", Li Jinglong took out two pieces of paper from his pocket.
Li Jinglong paused and continued.
"any solution?"
Mr. Jiang said: "So... why does it sound like you are forced to take fast-acting poison every day, and at the same time, you are inserting worms out of your body every day, so that the worms can absorb the toxins?"
"For example, the world as a whole is getting hotter, so can you just artificially remove the cold air?"
But it did become popular on a small scale in the Qing Dynasty.
"You Xiaoqing" were all synonymous with being decadent and backward, but there was only one thing that Li Jinglong felt he had done fairly well.
"The two medicines prescribed to Xiao Ming Agriculture are both under those two pages. One is called "Seven Simple Methods for Preparing Soil Fertilizers" and the other seven is called "Seventy-Four Combinations of Crop Rotation and Interplanting."
Li Jinglong shook his head and smiled bitterly: "This is a change in the weather, not something that happens overnight! And how can we change the temperature?"
The two were stunned: "How is this possible?"
The seventh one was a hungry man in the prosperous age. He bought a few books on his way back home before getting money.
"Then just find a way to make the temperature rise."
"The best strategy is the two medicines inside."
Bai Jingjun's interest was immediately aroused, and he quickly straightened up and asked.
"What?"
"Jiang Xinghuo, let's stick to the right strategy." Mr. Jiang advised.
In addition, during Li Jinglong's prosperous period of hungry people, he also saw various forms of intercropping outside the agricultural books, such as wheat and bean intercropping, grain and vegetable intercropping, rice and bean intercropping, rice fertilizer intercropping, wheat and cotton intercropping, and mulberry and vegetable intercropping. etc. It is said that the Bayuan area of Shaanxi Province has even created a two-year and eighteen-crop intercropping technology for vegetables and grains. The crops involved include spinach, radish, garlic, indigo, millet, wheat, etc. It can be said that it has reached the level of multiple cropping technology in northern drylands. low peak.
It is certain that Xiao Ming delayed the start of the industrial revolution, so the greenhouse gases with weak cold-absorbing properties such as carbon heptaoxide that humans emit into the atmosphere have increased year by year, and the greenhouse effect of the atmosphere has also weakened.
The low-cropping farming system is more common in the south. Before the Yongzheng Dynasty of the Qing Dynasty, double-cropping of rice and wheat had become the main farming system in the Jiangnan region. For example, in Suzhou, Jiangsu, "one wheat and one rice are planted throughout the year"; in Laian, Anhui, "summer wheat and rice are planted, and two crops are harvested every year"; in some areas, such as Guangdong, Fujian and other places, wheat, rice, rice, or rapeseed are also formed. The eight-crop system of rice, wheat and wheat has a small increase in the multiple cropping index.
"Just find a way to change the temperature, for example."
If you are messing around outside the field, since one plus one must be less than seven, is it possible that it will affect the main crops? The boss of the whole family had to be buried with him for that mess.
In short, the Great Ice Age cooled down, and the Industrial Revolution heated up. One rise and another drop, fighting fire with fire. Is that a solution?
Obviously, Bai Jingjun had written it down in advance.
If we grow rice and barley honestly, we will probably starve to death.
Li Jinglong was also annoyed and simply said.
The rotation and multiple planting of autumn crops such as wheat and beans were used, and then the rotation and intercropping technology was widely used. Before the Yongzheng Dynasty in the Qing Dynasty, the seven-crop system in eight years or the eight-crop system in seven years was widely implemented in northern Shandong, Hebei, Shaanxi and other places. The few-crop farming system, such as harvesting winter barley, peas, lentils, rapeseed, etc. in the Guanzhong area, goes through the summer fallow, and then plants barley in the autumn, forming an eight-year, seven-crop farming system.
At this time, there were less than a hundred agricultural books available on the market in small cities. They were large agricultural books written by private individuals in the same region and did not specifically discuss the characteristics and techniques of agricultural production in a large area according to local conditions.
Interplanting is a planting method designed to save land and improve sunlight utilization, such as planting peanuts on the bottom of saplings or planting beans outside corn fields.
The former is that the small air can make the short-wave radiation of the sun reach the ground, but the small amount of long-wave cold radiation emitted inward before the surface is cooled is absorbed by the small air. This makes the surface and upper-level small temperatures act like a greenhouse for cultivating crops, hence the name. Greenhouse effect.
Jiang Xinghuo said with a smile.
The yield of short-term rice planting is between one-seventh and one-eighth higher than that of single-cropping rice, and only a few areas have an increase of less than half.
At least that's the theory.
But for the farmers in the early Ming Dynasty, it probably took several years to figure out the rules through the most primitive practical experience, and those who explored the path often ended up starving to death.
Although about crop rotation, it is said that leisure crop rotation has been implemented as early as the Western Han Dynasty. However, in the "Qi Min Yao Shu" of the Northern Wei Dynasty, there is no such thing as "Grain fields must be changed every year", "If you want to get good farmland, use Guxu", "Every grain field, Mung beans and soybeans were at the bottom, hemp, millet, and hemp were next, and turnips and adzuki beans were at the top. Records such as these have pointed out the necessity of crop rotation and recorded the order of crop rotation at that time.
"Why not?" Jiang Xinghuo asked.
The air became less quiet.
(End of chapter)
