Everyone was stunned, carefully picked up the soil to take a look, and was dumbfounded, a pale yellow tuber with a bucket thick system was exposed, and the worker went down with a hoe, and dug down a large piece of the tuber, revealing the milky white flesh inside, although it was stained with a lot of black soil, but it was quickly washed away by the milky white juice that came out.

"It's... Is this a green ivy cassava? mutated, isn't it? Isn't it supposed to be only the thickness of an arm?"

Gu Yi leaned over in surprise and tasted the milk-colored juice with his fingers, the taste was a bit like coconut milk or soy milk, not at all like the Wan Shang who brought the green vine cassava said, but the taste was sweet, and the sugar content was estimated to be not low, like the sweet potato he had eaten in the original world.

"Be careful not to hurt the rhizome, don't start digging from the edge of the field, start digging out from the middle to see how big this thing is"

Gu Yi waved his hand excitedly, and jumped into the field himself, because his own strength was too large, Gu Yi, who had never used a hoe, was afraid that he would not be able to control the force and hurt the tuber of cassava, so he simply did not use tools, and directly used his palm to pull up the soil quickly like a marmot.

This growth rate of Qingteng cassava is too amazing, a month to grow to this scale, if the yield is high enough, I am afraid that less than 10,000 square kilometers of cassava planted in the first season will be enough to feed the entire population of Qingshi Ling.

The workers were also excited, and they had never seen anything else in the way, a crop that grew at a terrible rate.

As a group of people started to excavate, the exposed green vine cassava tubers stunned the little friends, the original green vine cassava brought by Wan Shang has ten to fifteen taproots, as well as a large number of fibrous roots and aerial roots that spread outward in the form of spider webs, the thickest taproot can grow to the thickness of an adult's wrist, and the length can grow to more than ten meters or even twenty meters

However, in addition to the erect roots that pierced the green vine cassava that Gu Yi and the others dug up, the roots of more than a dozen taproots that grew horizontally were already crowded together and grew into a very ugly deformed nodule, forming a large giant nodule with a diameter of one or two meters

Beyond this large nodule with a diameter of one or two meters, the radial taproot is as thick as a bucket, and its length has even passed under the ridge and burrowed into other fields, and even the very end is the thickness of an adult's thigh

And the fibrous roots that spread out between the dozen or so taproots are also amazingly thick, and the number of them has been like a mess, intertwined with each other layer upon layer, weaving a huge "flying saucer" shaped object covering an area of six or seven hundred square meters

"I'll it"

Gu Yi's eyes were a little straight, and he finally knew that the soil in the field would crack and bulge, and Nima felt that the underground space was not enough, and the chief of the goods had lifted up the soil layer on the surface

At the same time, Gu Yi also probably guessed the reason for the mutation of Qingteng cassava, which is simply a native camel with no growth limit

The following tubers are its organs that store nutrients, and when the environment is good, it will desperately absorb nutrients and water and store them in the roots, and when the environment is bad, it can survive for a long time without external factors

The living environment of green vine cassava in South Vietnam may be relatively harsh, because the land is barren, so it is only the thickness of an arm, and the taste is bitter, probably because of the lack of water, coupled with the high salinity of the soil.

After coming to the bluestone collar, the black soil that is fertile enough to drip oil provides it with a perfect growth environment, plus the inexperienced Gu Yi and them, for fear that they will not be able to grow and desperately top dressing and watering, resulting in the green vine cassava desperately storing nutrients and water, and as a result, it has grown into this terrible deformed appearance

"Dig all the digs and weigh how much the yield per mu is"

Gu Yi came back to his senses for a long time, the big tumor on the taproot alone weighs several tons, right?

Because they did not expect that Qingteng cassava would grow into such virtue, there were not enough people to come, and more than a dozen people were not enough to get this big guy out of the acre of land within a radius of twenty or thirty meters, so the workers hurriedly went to beckon dozens of people to come over and work together.

Even the planing and digging, the more they dug the more surprised they became, because the fibrous roots were tangled together, they could only use a sickle to dismember it, piece by piece to move up, but after digging out a layer, they found that there was another layer below, and there was still a layer after digging out a layer

After digging three meters into the ground, they found that at a depth of three or four meters underground, there were still dense arm roots and egg-thick aerial roots, and they almost dug an acre of field into a big pit before digging out all the cassava.

In order to calculate the yield per mu, if it spreads to other fields around it, it can only be temporarily abandoned, anyway, there are also other fields that have spread over, and everyone crushed the large pieces of soil to ensure that they can no longer be found, and then they stood on the edge of the field, looking up at the cassava piled up into a mountain and were collectively stunned.

A dozen large crane scales were quickly transported by horse-drawn carriage, and everyone worked together to weigh directly at the edge of the field, and after the most Lu added up the results, all of them were frightened by the number: 7538 Hu

This Nima is against the sky

The root system of a green vine cassava tree dug up nearly 570 tons of cassava

Isn't this scientific?

Gu Yi, who suddenly began to feel scared, clearly remembered that in his original world, the high-yield sweet potato with the highest yield per mu could only reach six tons, and the yield of cassava per mu was 570 tons

Compared with millet with a yield of only one hundred, the yield of cassava is really terrible

Gu Yi looked at the cassava field that had turned into a big pit, then at the cassava piled up into a hill, and then at the green that spread to the end of the horizon, and involuntarily swallowed his spit and twisted it on his thigh, this Nima is the Great Leap Forward Satellite Ah Cao Cao

Due to the primitive relationship between steam and agricultural machinery and equipment, the green vine cassava they planted in the first season was spread to the distance around Qingshi City, and it was roughly estimated that the area was only about 10,000 square kilometers, which was equivalent to more than 15 million acres of fields.

But even so, if 570 tons of cassava can be produced per acre of land, the total output of more than 15 million mu of land will be as high as a terrifying 8.5 billion tons

Of course, this has something to do with the fact that the fields near Bluestone City have been fertilized by the farm, and the land of Bluestone has never been planted with crops, and the fertility remains intact.

In order to determine the average yield per mu, Gu Yi beckoned with a serious face and dug again

Soon, the yield data per mu in the cassava fields from near to far away was transmitted to Guyi, where the average yield per mu of the cassava fields that had been fertilized was about 600 tons, and the average yield per mu of the cassava fields that had not been fertilized in the distant places was about 200 tons

Based on this data, the actual total output of this 10,000 square kilometers of cassava fields this season should be more than 3 billion tons.

Considering the decline in fertility of fields without fertilizer, this yield should gradually decline, but even if it remains at 100 tons per mu, it is a very frightening number

Gu Yi's nose was not a nose, and his eyes were not eyes, but after a sudden pause, his face turned pale and jumped up violently: "I, Cao, hurry up and send someone to inform all the reclamation legions that they can no longer plant green vine cassava, and if they can be dug up, they will all be dug up for Lao Tzu to have an accident."

The workers were stunned for a moment, not understanding what Gu Yi meant, but Gu Yi almost stopped crying

He ignored a very serious problem, that is, if cassava is eaten as food, according to a person eating three catties a day, these three billion tons of cassava alone can ensure the food ration of five or six billion people for a whole year

Don't forget, this is the yield of 10,000 square kilometers of cassava fields in a month, if all the 500,000 square kilometers of territory are planted with green vine cassava, how much will it be to harvest 12 seasons a year?

Of course, a lot of food is a good thing, but the question is, how many people does he have now?

Of the three billion tons of cassava harvested this season, they have to eat it until the Year of the Monkey?

How to transport and store the cassava that cannot be eaten? Just trying to dig these cassava out of the ground requires manpower

Not to mention the distance, even if it is the 15 million mu of cassava fields near Bluestone City, Gu Yi's current population has nothing to do all day long, and all of them are used to dig cassava, I am afraid it will not be enough

This thing grows quickly, and it is difficult to completely remove it from the soil, as long as a little fibrous root and aerial root remains in the soil, it will quickly re-sprout and there is no need to sow again

The most terrifying thing is that the terrible invasive plant of green vine cassava will continue to consume the fertility of the land, and if it continues like this, it will eventually lead to the barrenness of the land

It can be predicted that if this problem is not solved as soon as possible, I am afraid that within ten years, the entire bluestone collar will become a desert that can't even grow grass

Gu Yi almost regretted all the eggs

He didn't even think that the large-scale planting order issued by the bluestone collar was originally just to harvest a large amount of grain as soon as possible and solve the problem of food self-sufficiency of the skyrocketing population, which would cause such a terrible result.

He originally thought that even if the green vine cassava grew fast, it would be able to get there?

With an area of 10,000 square kilometers, which is just a square space of 100 kilometers by 100 kilometers, how many people can eat the food that is grown?