"Shuiyun Palace has its own counting standards, and Xiaomin still doesn't know much about the weight unit of Datang, so there is no way to convert.

However, Xiaomin's hand feels good, and he can roughly judge our standard weight. ”

Fan Jingjing is not only unclear about the weight standard, but also unclear about the honorific titles and self-titles they use to speak, so she has to think of a casual way to deal with the past, anyway, as long as she doesn't seem too proud, the superior generally won't feel that there is anything wrong.

Since she is now a common person, she is different from these aristocratic classes or civil officials, and there should be nothing wrong with using small people.

During her studies in the Department of Agronomy and after graduation, Fan Jingjing read a lot of reports on the latest scientific and technological knowledge in agriculture and knew a lot of news.

The Qinzhou Agricultural Technology Extension Station undertook the project of "Qinzhou City Three Grain Production and High-yield Cultivation Technology in One Year" for the acceptance of the research field, with the highest yield of fresh potatoes per mu being 4,435.5 kilograms.

Fan Jingjing knew that potatoes were potatoes, and the potatoes she bought were not the recently improved high-yielding varieties.

Even if it is an improved variety, it is an improved variety more than ten years ago.

But compared with the output of the Tang Dynasty, it must be high-yielding.

Agriculture is a process of continuous optimization and breeding, thousands of years, even if there is no progress in agricultural science and technology, but farmers continue to optimize the varieties, the seeds of the offspring can grow a relatively high yield per mu.

Any kind of seed, when it comes to Datang, can be said to be an improved variety and win applause.

She got a bag of seeds, but when she planted potatoes with seeds, the growth time was relatively late, and the mutation would be relatively large.

She will plant the seeds later to develop better potato varieties, but for now, it is faster to use tubers in the pursuit of timeliness.

She decided to put a more stable number.

"In Shuiyun Palace, we can probably reach four thousand catties per mu."

A pound is half a kilogram, and Fan Jingjing cut the output in half.

"By the way, the concept of mu is also different from what Datang commonly uses......

Fan Jingjing took the opportunity to stand up and draw a size on the ground.

"Shuiyun Palace is about this big acre."

Fan Jingjing's one mu can give Empress Changsun a clear idea, but since Fan Jingjing said that the catties of Shuiyun Palace are different from the existing units of Datang.

So she asked the maid to come and get a bag of wheat.

Let Fan Jingjing get a pound out of her mouth.

After figuring it out, Empress Eldest Sun began to calculate, and for such challenging things, she liked to do it herself.

When the palace maid next to her finishes counting, I don't know when it will be.

After finishing the calculation, Empress Eldest Sun's eyes widened for a moment, and after she froze, she suddenly bounced:

"What you said is true?"

"Absolutely." Fan Jingjing secretly sighed and knelt down again to show her prudence and seriousness.

She lowered her head, stuck out her tongue secretly, and thought, "There are so many rules in ancient times!" ”

Empress Eldest Sun couldn't help but stand up and walk back and forth.

The Tang Dynasty was heavy on agriculture, and the tax revenue was mainly agricultural tax. She naturally knew how big an acre was, Fan Jingjing painted the place, she asked the palace maid to measure, and probably calculated, Fan Jingjing painted an acre of land, four-fifths, about an acre of land in the Tang Dynasty.

Fan Jingjing's so-called "jin" is about five-sixths of Tang Jin.

One stone is equal to four pounds, and one pound is equal to thirty catties.

Empress Eldest Sun was not slow to calculate, and it took a little more than a quarter of an hour to complete the calculation.

The highest yield per mu in Datang is Ershi.

The yield per mu of potatoes is more than 300 stones...... This is outrageous. Even if there is no way to grow the same yield as Shuiyun Palace, even if it is only half, it is still a high yield.

Fan Jingjing didn't know that in the heart of Empress Changsun, Shuiyun Palace had become taller, but she didn't believe that the farmers of the Tang Dynasty could grow as well as Shuiyun Palace.