The use of the Quyuan plough has always been regarded as the beginning of intensive farming in ancient China, and now Cao Liang has introduced the Quyuan plough to replace the straight plough, which is to provide a prerequisite for intensive cultivation.

Of course, intensive farming is not only the innovation of agricultural tools, it is from the cultivation of cultivated land, irrigation, planting, management and other aspects of the improvement, only intensive farming, in order to increase the yield per mu, so that the limited cultivated land can feed more people.

Extensive planting, the waste is not only seeds and exaggerated manpower and material resources, when the farmer who cultivates the land has worked hard for a year, harvesting a little food from the field that is almost difficult to support his family, then he is desperate for the land, and naturally has no enthusiasm for farming.

When there is no hope for doing something, the result must be terrible, the sun rises, the sun sets, day after day, year after year, doing repetitive things, the mechanical life is tiresome, once encountering those force majeure disasters, these farmers will easily abandon the land and become displaced people.

What Cao Liang has to do now is to change the planting concept of farmers in this era, although intensive cultivation requires more manpower and material resources, but the same farmers can harvest joy and hope, ordinary people are the cheapest is sweat, if they can really see the grain warehouse, then they will feel that no matter how much effort and sweat is worth it.

Of course, Cao Liang's intensive cultivation is only a conceptual thing, and a lot of practice is needed to implement it in actual operation.

After all, Cao Liang in his previous life had never farmed, and he didn't have any experience, so Cao Liang put forward only a guiding opinion, he selected some experienced old farmers from the people, taught them some key points of intensive cultivation, let them explore in practice, and appointed a full-time agricultural officer to manage these experimental fields.

Intensive farming is a subversion of traditional agricultural farming methods, from planting, irrigation to field management, all have different operations, so this planting method poses a new challenge to farmers.

Cao Liang selected the experimental field is a better water and fertilizer conditions of the lot, with the quyuan plough and keel waterwheel, the efficiency of cultivated land has been greatly improved, and no longer worry about the disaster factors of drought and rain and waterlogging, Cao Liang asked people to collect human and animal manure for fertilization of the field, using the planting method of consistent plant spacing and row spacing.

In the past, farmers did not know what is called plant spacing, they planted crops, often sprinkled seeds into the ground, many people think that the more seeds, the better, so that the crops will be dense and many, such a planting method not only wastes seeds, but also too dense planting but makes the crops thin and weak, and the harvest is naturally not good.

Using a new planting method, you can save more than half of the seeds alone, but when planting, many people are sweating, Cao Liang only planted such a few seeds, will there be a good harvest?

But Cao Liang is confident in this, reasonable planting can not only save seeds, but also allow crops to fully ventilate, balance the use of land fertility, and grow more robust.

Intensive cultivation is a systematic project, so during the pilot period, Cao Liang deliberately sent a special person to supervise and truthfully make records to facilitate future promotion.

In the past, farmers in the state planted crops, most of them were one crop a year, Cao Liang this time to carry out a pilot, first launched a two-crop planting model, before this, it is indeed incredible, because the two-cropping village marriage in a year is only available in the south, and it is basically rare in the north.

If Cao Liang's two-cropping method is successful, the grain output alone can be directly doubled, and if the high harvest of intensive cultivation is added, it may not be difficult to triple it.

Double-cropping in a year, that is, winter wheat is planted in autumn and winter, millet is planted immediately after wheat is harvested in early summer, and winter wheat is planted in autumn.

Cao Liang's pilot project started in the summer, the first planting is millet, completely in accordance with Cao Liang's method to plant, although this year to catch up with the drought, the whole dog days did not have a drop of rain, but Deng Ai's water conservancy project has been fruitful, the use of keel waterwheel, these experimental fields can be watered, to ensure the survival of crop seedlings.

In autumn, the growth of millet is gratifying, the large and long ears of grain are heavy, and when it comes to the harvest season, many people are surprised to find that the yield of millet has really increased nearly twice as much as that of ordinary fields.

If this method of cultivation is extended to the entire prefecture, then the grain output of the prefecture can be doubled, and not only can the food ration problem of the common people be solved, but also the army will not have to worry about food and salary.

But Cao Liang is not very satisfied with this, even if he receives twice as much grain, it is only a hundred or ten catties per mu, and the output of later generations, there is still a tenfold gap, it seems that if you want to increase grain production, there is a long way to go.

After the autumn grain harvest, Cao Liang immediately began to plant winter wheat, whether it can achieve another doubling of the annual grain output, and whether the winter wheat planting is successful or not, is the most critical.

However, after the bumper harvest of autumn grain, the officials and farmers in charge of the pilot planting were full of confidence, and they invested more enthusiasm and energy in intensive cultivation and safely planted according to Cao Liang's requirements.

Winter is coming, heavy snow covers everything, but for the people of Bingzhou, this is a happy snow, winter wheat cover three layers of quilts, the next year to sleep with steamed buns, Ruixue mega year, this heavy snow, will definitely bring a good harvest for the next year.

Cao Liang has been paying attention to the war on the Huainan front, but what is strange is that after Sima Yi cleaned up Ling Huyu and Cao Biao, he has been holding his troops in Yanzhou and has not gone south to Huainan for a long time.

Sima Yi in the military, always have tricks, sometimes move like a rabbit, sometimes quiet like an old turtle, when he fought Yanzhou, he ran thousands of miles within a few days, ran from Bingzhou to Yanzhou in one breath, killed Ling Huyu by surprise, and even blocked Ling Huyu directly to the Thorn Mansion.

In the past six months, he has been stationed in the Yanzhou area, such as today's cold and freezing, it is not suitable to use troops, it is estimated that Sima Yi will not send troops again this year, if he really wants to send troops, he will have to wait until the spring of next year. ... Friends who read books, you can search for "Blue Chinese Network", you can find this site as soon as possible.