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In general, the future island of Hokkaido will become a pivotal link in the chain of interests of Marin in the Ming Dynasty, which is very important. Therefore, Marin intends to take the island of Hokkaido under his own control.

For this reason, Marin specifically explained to Mizuko that in the future, Hokkaido will be managed by officials appointed by him himself, rather than controlled by Mizuko. Liver Fu Shuizi was very disappointed, but she couldn't help it. Because she understands that without Marin's support, she and her son would not be able to compete with even the smallest daimyo in Japan.

However, Marin said that in the future, if he took Osumi Province and even Kyoto, he would hand it over to Mizuko to manage civil affairs. As for Tamarin, as long as the gold, silver and copper mines, as well as the Hokkaido fishing grounds have jurisdiction. And this is definitely great news for the liver to pay for the water. Because, Mizuko did not know the terrifying reserves of Iwami Ginzan, nor did she understand the importance of the whaling industry after the appearance of whaling cannons.

It's not just the liver and water, most East Asians in this era are probably focusing on arable land and ignoring minerals and fisheries. Because, compared to the output of land, the mining and fishing industry in this era is really too small.

Even, the daimyo of Japan, even the quality of the fiefdom, used ishigaka (grain production) to quantify the quality of the fiefdom. It is necessary to point out a fallacy that many people rumor that a stone in the Warring States period of Japan was 30 kilograms, or even 20 kilograms, is complete nonsense.

I learned from Liver Fumizuko that at present, Japan's acres of land are not used as mu, but as a basic unit of cultivated land. A section of land in Japan during the Warring States period is equivalent to 1,093.2 square meters, or 1.63 acres. The weight of one stone of rice is about 260 catties, that is, 130 kilograms.

According to the current Japanese version, the first section of Ueda = 1.5 stones, the first section of Nakata = 1.3 stones, and the first section of Shimoda = 1.1 stones. In this way, at this time in Japan, the Ueda produced 423.8 catties per mu of 1.63 mu, and the yield per mu was 260 catties. The middle field is equivalent to 225 catties, and the lower field is almost 190 catties per mu.

Such data is still relatively reliable. After all, Japan is influenced by Chinese culture, and it also knows how to use manure and oxen for farming.

If it is calculated by 30 kilograms, then the yield per mu of Ueda in Japan is only 60 catties, Nakata is only 50.75 catties, and Shimoda is only 43.7 catties...... Such data, no matter how you look at it, is not even half of the yield per mu in Europe......

However, in ancient times, rice was grown in Japan, and the yield per mu was a little higher than that of wheat. According to the old people of later generations, when chemical fertilizers were not used in the past, soil fertilizer was used, and the yield per mu of rice was generally more than 300 catties, and the yield of wheat per mu was generally more than 200 catties. If it is a good paddy field, the production capacity of rice per mu will reach four or five hundred catties......

However, the stone height in Japan is about the yield of rice, not rice. According to the rice yield rate of 7 percent, then, the rice yield per mu in Ueda in Japan is also 371 catties, 321 catties in Nakata, and 271 catties in Shimoda...... This figure, compared with the output of ancient China, seems to be very reasonable......

However, he also pointed out that this standard is the tax standard of the Japanese daimyos, and it is actually set higher. For example, in the field, the yield per mu of rice is not as high as 271 catties, and some yield per mu is not even 200 catties. But those Japanese daimyo don't care, they just levy food according to this data, and if they don't give it, they will die......

In the Edo period, the stone height of the Tokugawa shogun's house was 3.98 million koku, which was almost 4 million koku. According to the habit of the lord's family to collect half of the grain, the shogun received 2 million koku of grain every year, that is, 520 million catties of rice, which was still very rich.

However, the daimyo in those places didn't have that much food. For example, in Osumi Province, there are several counties, and the stone height is only 175,000 stones, which is the total output of 45 million catties. and those taken away by the daimyo and the powerful are at least more than 22.5 million catties.

But Marin did the math and found that there really isn't much arable land in Japan. For example, the Osumi National Stone is 175,000 stone high, which is a total output of 45.5 million catties. Even according to the calculation of 190 catties of lower fields, there are only 239,000 acres of cultivated land. According to the Ueda algorithm, it is only 175,000 mu.

Even if it is calculated according to 239,000 acres of land, it is only 159 square kilometers of cultivated land. However, the area of Osumi Province is about 4,500 square kilometers, and even according to the highest 239,000 mu of cultivated land, the proportion of cultivated land is only one-twenty-eighth, that is, 3.53 percent.

But there is no way around it, because most of Japan is mainly mountainous. Rice fields can only be cultivated in mountain valleys and narrow plains along the coast.

However, the Ishikari Plain of Hokkaido, which Marin is about to occupy with his troops, is a large plain of 4,000 square kilometers that is perfect for farming. And 4,000 square kilometers, that's equivalent to 6 million mu, which is 25 times the cultivated area of Osumi Province! Even if only one-sixth of it is reclaimed, there will be 1 million mu, which is 4.1 times the total arable land of Osumi Province!

The only problem is that 1 million acres of arable land need at least 10,000 farmers to cultivate it......

Of course, this may be a problem in North America. But in Japan, the most important thing people lack is people!

But Liver Fu Shuizi said that Japanese farmers are too short and thin, although they can endure hardships, but a family of five can't cultivate 100 acres, and 50 acres can make them tired enough......

Ma Lin thinks about it, the little people with an average height of more than one meter four and more than one meter five look about the same height as elementary school students. Let their family cultivate 100 acres of land, which is simply lifelong. Even if it is the ideal of a Chinese farmer, it is just "a cow on thirty acres of land, and a hot kang head for wives and children". It can be seen that 30 acres of land should be a scale that a family can handle. And 50 acres of land is more difficult.

In addition, the liver also raised one of the biggest problems - the problem of ploughing cattle!

In Japan in this era, population is not a problem, cattle are the same as the Ming Dynasty, they are a big problem! If a family cultivates less than ten acres of land, then even if there are no cattle, the male laborers in the family can barely cope with the past by working as oxen to pull the plough and desperately survive.

However, if the cultivated area is too large, more than 20 acres of land, it is not practical to pull the plough by manpower. Because, people's strength and endurance are not as strong as oxen. Even if it is 20 acres of land, relying on manpower to pull the plow, it can also tire people down.

Fortunately, whether it is the Ming Dynasty or Japan, the population is very large, and the acres of land of each family are generally only about ten acres, or even only a few acres. Therefore, the problem of cattle shortage is not very big.

But if Marin wants to use 10,000 households to cultivate 500,000 acres of land, he has to use livestock to pull cattle. In fact, if Marin was ruthless, he could buy 10,000 cattle from Eastern Europe and ship them to Hokkaido, Japan.

However, in Japan, paddy fields are mainly cultivated. As for paddy field farming, it is difficult for ordinary cattle to adapt to the environment of long-term soaking in paddy fields, and they are prone to illness and rotten hooves. Horses are not good at cultivating paddy fields, and as far as Ma Lin knows, a few southern horse breeds such as Hu Jian's Jinyijiang horse can adapt to paddy field farming. Moreover, for the sake of paddy fields, they do not nail horseshoe. Because, nailed the horseshoe soaked in the paddy field, the horse's shoe iron will rust and break.

In this regard, Marin is also helpless. If it is dry land, there are many ways, not only can you use cattle from Eastern Europe, but you can also import Mongolian horses from Mongolia to engage in horse farming. But paddy fields......

Marin said that he could only exchange the Japanese for the goods that they were interested in as much as possible......

Paddy cattle are a valuable resource, whether in the Ming Dynasty or in Japan, they are a strategic material in urgent need. However, in this era, Marin also had the opportunity to get some Japanese farming cattle.