"In a building, it is important to look at three things: whether it is correctly located, whether it is properly laid, and whether it is successfully constructed. ”

Yu Zai explained to Wen Ming and the leaders of the Shang tribe the characteristics of the swamp, as well as what they wanted at the moment, and how to plan the plan.

Geological and environmental factors can affect the longevity of a building and the flow of breath within this area, and it is even possible that a building may change the environment of an area, although this situation is mostly positive in this era.

Clear the swamp, gain +2 food, and use workers to improve the tile.

Dayu in the timeline of the concubine, spent thirteen years to govern the world, of which the Shang tribe people followed him, the main area of governance is Meng Zhuze, so in accordance with his method of governance, Meng Zhu flood receded, Daze became a wetland, this wetland is vast and infinite, the water and grass are abundant, people "fill the silt and fertile, gather and cultivate, build a little house, and then become a tribe".

It was also this governance that indirectly laid the foundation for the later Shang Tang and Xia Xia.

The swamp is a good place, and there are abundant peat resources underneath, and peat is the inferior coal that was once mentioned in the fire-weary country, which is the initial stage of coal formation, referred to as "grass peat".

"While protecting the environment is important, and swamps are an even more important part of it, but..."

"Brother Zai, you still protect the environment, as soon as the flood hits, everyone here goes to swim in the water, come and protect us!"

Wen Ming is whining on the side!

Brother Zai, you have to be people-oriented, you still protect the environment these years, nature is going to eat my mother raw!

Yu Zai put aside his feelings and began to tell everyone about some basic geological problems.

"To improve the marshland, we first need to understand what the wetland ecosystem is. ”

"The so-called ecosystem refers to a certain range, a whole composed of all things and heaven and earth, in this whole, they have their own laws of life, unless there is a third force to interfere, otherwise they will not be actively destroyed.... It's like some animals only live in wetlands, some animals only live in forests, and camels in the quicksand of the West don't appear in the swamps of the East. ”

"A swamp is a type of wetland...."

In the following time, Yu Zai first popularized the definition of wetlands and swamps to everyone, so that they could understand the ecological structure in them, which is necessary, because according to the evolution of swamps, it can be divided into three stages, and after each stage of transformation, the work that can be carried out is also different.

After all, real work is not like playing the "Civilization" series, only one worker is needed to complete the cell transformation, and real work requires the collaboration of many people.

Meng Zhuze belongs to the rich swamp, which is the first stage of the evolution of the marshland, and it is the easiest in terms of transformation, from the stage, the water in this stage comes from the surface water flow, groundwater and rainwater, and the main reason for accumulation is caused by the low-lying land, and the water source of recharge is mainly groundwater.

If it is a mediotrophic swamp, or a poor swamp, there is basically no way to transform it, especially the latter, after a large amount of soil acidification, it can almost only be used as a mining place for fuel and chemical industry, but these two technology points are not there a way to point out now, because the pre-technology is still gray.

These two types of swamps are the middle and final stages of swamp evolution, when the climate and environment of the region, including the land situation, have been finalized, and in the current era, unless hundreds of gods are found to help, it is impossible to rely on ordinary tribal people to have a huge impact on them in a short period of time.

Especially in this era of frequent floods, Meng Zhuze will only rely on the favor of the Yellow River and become more obese and unscrupulous.

"If Meng Zhuze uses it well, it can become an important reservoir to regulate flooding, if it is not used well, then it is a shrew, in general, the current Meng Zhuze is still in the first stage of swamp evolution, and these erosion lands around him, after the transformation is completed, can become fertile and good cultivated land. ”

"So what we have to do is first to cut off the water source from outside, that is, the water of Daze, and then to dig drainage ditches. ”

Yu Zai issued the first work plan, in the period of spring ploughing, the Shang tribe still mobilized a lot of manpower over, thanks to the plough tools and the method of composting and manure, and thanks to God, the tribes of the Central Plains have basically had a bumper harvest in the past two years, after the food is guaranteed, the Central Plains has not very high requirements for hunting, so a large number of idle manpower, including those who carry out sacrifices are pulled to work.

There are more than 40,000 people in the Shang tribe, this number is very huge, a tribe is on top of the entire salt water tribes, even the heyday of the Chifang clan can not be compared, generally speaking, the tribes of the Central Plains, after the population exceeds 10,000, up to the top of 40,000, this is the number of medium tribes, and breaking through 40,000, it is definitely a big tribe.

Most of the people of the Shang tribe are divided from the people of the Gaoxin clan, and the Gaoxin clan has not divided the people a few times from ancient times to the present, so it is normal for the population to be large.

Seeing more than 10,000 people working here, Yu Zai was also a little trembling.

Nima, the people in the south, the manpower of building the big flood control city is only more than 10,000 people, or begging grandpa to tell grandma, sending recruitment advertisements everywhere to borrow so many people, as a result, the Central Plains, the Shang tribe is arrogant, digging some drainage ditches, small mouth, in a word, tens of thousands of people to help.

In the south, 5,000 people can be regarded as touching the threshold of a large tribe, and most tribes only have a few hundred, only one or two thousand, but in the Central Plains, breaking 10,000 is nothing!

"The Central Plains is a plain, naturally suitable for farming, and in the past 800 years, Shennong's productivity has been much higher than that of the south. ”

10,000 people work here, and when they heard that Yu Zai wanted to help them transform Daze, most of them were skeptical, but they didn't dare to slack off on the work at hand, after all, it was something that their own tribal leaders agreed to.

In terms of spirit, it is much worse than the energetic people in the south.

After more than a month, everyone was covered in mud, and Fei Zai divided the swampy land into patches, relying on the rolling hills, and sent people to cut off the water flow, that is, to artificially create a small embankment out of boulders and soil.

The basic vertical and horizontal of the ditch has been dug out, and the people of the Shang tribe have prepared a lot of cut stones during this time, and the soil of the swamp is soft and cannot be rammed, so the stones are embedded around the mud ditch to prevent the mud from being blocked.

When the drains were first used, a large amount of water was poured out, and then the soil was ploughed, and the flames were used to cover a large area and evaporate some of the water vapor.

"Cultivating the land at a deep level is also an important part of the soil normalization, because the soils in the marshes are clumped together and cannot be breathed and seeped downward, but the groundwater is constantly backflowing up to the ground, so that the water is silted up on the surface area. For places where the silting is too strong and falls too deep, it is necessary to carry out backfill work...."

“..... The criss-crossing ditches surging out in the opposite direction of Daze, the final destination of these currents is a stream of water called Takeshui, which winds all the way to the east and can be used as the end point of the discharge of Daze's silt. ”