C166 (2/2)

In Xue Lang's Shuo, the main content is the promotion plan and measures of sweet potato. Unprocessed sweet potatoes can only be preserved for one year at most. This is a cold climate, where there are cellars. If it is in the warm south, it is very difficult to keep sweet potatoes for one year.

In order to solve the problem of the difference between the north and the south, Xue Lang proposed the method of deep processing, processing into vermicelli. After that, as long as it is placed in a dry place, let alone for a year, it is OK to keep it for two or three years.

However, to process into vermicelli, it is necessary to involve a processing method. How to spread this method is directly related to the success or failure of sweet potato promotion.

Pei Ji asked: ”dare to ask Xue Jun Gong, how many catties of sweet potato can be made into one jin of vermicelli?”

Xue Lang said, ”about five catties.”

”In this case, the cost is not too much,” Xiao said

Xue Lang said: ”the high yield of sweet potato means that the price of sweet potato is not comparable to rice grain, let alone flour. Compared with rice grain, I regard sweet potato as a kind of material for famine relief. Such as soybeans, soybeans, such as coarse grain equivalent. Such a high-yield crop is easier to preserve after processing. In order to preserve food, most people will choose to make vermicelli

People nodded, Xue Lang continued: ”no matter what means of promotion, no matter how fast and powerful the support of the state can be. As the saying goes, if you do something on the top, you will do it at the bottom. As long as the measures are appropriate and steadily promoted, it is not difficult to popularize sweet potato, and the speed will not be slow. On the contrary, the fear is that the processing conditions do not keep up with the development of sweet potato, and the output of sweet potato will be wasted and vacant. Therefore, I suggested that the local government offices should set up workshops to process vermicelli and charge processing fees to maintain the expenditure. ”

Xue Lang analyzed the way of popularizing sweet potato in Shuo. It adopts the way of point to point and layer by layer progressive. Now there are only two places with sweet potato seeds, Chang'an and weizeguan.

Take these two places as the starting point, slowly, layer by layer, piece by piece to promote the sweet potato. The state will set up processing workshops to promote sweet potato. As soon as sweet potato is planted in the field, it is necessary to establish processing workshops.After processing, the sweet potato workshop can be set up and converted into cash. After the sweet potato is made into vermicelli, it can also be used to supply the national grain reserves.

Xue Lang said: ”because of the high yield of sweet potato, it has been popularized very quickly. The first batch of processing workshops in Chang'an and weizeguan needed to be paid by the government treasury. Later workshops could use the proceeds to finance the construction. In this way, the pressure on the Treasury expenditure could be reduced. It can also avoid the bad consequences that may be caused by too hasty promotion, and it is also safe enough. ”

With the output of sweet potato, even if the processing fee is only one cent per catty, you can make money. It is very simple to build a processing workshop. Where there is water, you can build a water mill. If you don't have water, you can use a donkey. You don't need much manpower. The main thing is that the place is spacious enough.

But now it's not that the population and land of later generations are small. Now it's still a vast and sparsely populated ancient times. Land is really not a scarce thing.

Xue Lang's prose is easy to understand and well organized. All of you are well-educated. It's not easy to understand. Xue Langgang just explained it again, and he was already ready to do it.

Li Gang said: ”when I went to Weize pass to investigate the auspicious omen, I heard about the yield of sweet potato, and I had calculated that such a high yield of sweet potato needs no more than one variety. It only needs to plant an acre. The number of households in the Tang Dynasty is also a shocking yield. Such a huge yield, plus the ability to grow the rest of the food It's not hard to have enough food, and it's not difficult to have enough food besides satiety. ”

Xue Lang said: ”Li Shangshu's inference is correct. However, we should also consider the factors such as planting conditions and technology. For example, if the soil fertility is weak and the farming technology is backward in high mountain areas, we are afraid that the current yield can not be achieved. In that time, it is necessary for these areas to diversify several mu.”

”Even if there are more than a few acres, it is enough for a family of several people to eat.”

”In this way, at most five years, there will be a problem in front of you.”

Xue Lang had long predicted that: ”the problem of overcapacity!”