Datang Nongsheng

Chapter 668 Biological Sciences
Naturally, Sun Xiangfu hoped to show the cartoons of Jiuyuan County in Chang'an, a place that could represent the core of the Tang Dynasty, because, in terms of popular science knowledge, the efficiency is the highest only in Guanzhong, which has the largest population.

And looking for Changsun Wuji to collect money is to tell those children and their parents that what they learn can create economic value for them, which is many times higher than farming. Their talents and specialties are useful. of.

Soon, Changsun Wuji and a group of officials followed Sun Xiangfu to a place called "Biology and Nature" exhibition area. Here, there is also a small stage, and there are many moving wooden boards with wheels on it. People who study folk science know that this is called an active blackboard.

And many large colorful pictures are hung on these big blackboards. A student who looks to be in his teens is holding a pointer and explaining an insect to the crowd, from eggs to insects. The entire course of the adult worm.

"You seem to have talked about this in your folk studies class. I remember that there are still many pictures hanging in your folk study classroom to teach the common people to recognize pests." Changsun Wuji spoke first, A group of officials who knew a little about the civil studies class in Jiuyuan County also nodded and cast puzzled looks at Sun Xiangfu to see why he asked himself to read these things they already knew.

On the other hand, Li Ke, Li Yuanjing and other fellows who have been studying here for more than two years, frowned when they saw the pictures on the small stage and listened to the content explained by the student. They are teaching the common people to recognize pests!This is clearly teaching the common people to raise insects.

"The superficial knowledge of recognizing pests is only suitable for ordinary people in civil studies classes. The real biological science and technology must have a certain level of education in order to learn and understand. For example, the fly that this child is talking about now, everyone You all know it, and you know it is a pest!
But, why do you not understand what this child is talking about, but many people listen to it with great interest and want to learn it!Because, he was talking about how to raise flies and how to let ordinary people make money by raising flies. "

"Flies, keep them? Why do you keep them? In summer, they fly everywhere. How valuable is it?"

Before Changsun Wuji realized what was going on, many other officials who thought flies were unclean and big pests began to yell first, but Li Ke and Li Yuanjing were relatively quiet, while Li Yuanchang looked like he was watching the fun The expression, also does not tell the truth.

Seeing this, Sun Xiangfu turned around and walked to the stage, but Changsun Wuji stood beside Li Ke and asked, "Do you know the benefits of raising flies?"

Li Ke nodded and said, "I have roughly guessed some of them, but I don't know all about them. Perhaps, pests can also bring benefits to us humans when they are used in the right place! Manager Changsun should have seen some of the circular chains posted here. This is the biological chain mentioned in the biology and nature textbook of Jiuyuan County, and these flies and moths are in the previous chain, and there are chickens, ducks and geese."

"You mean, people can raise these flies to feed chickens, ducks and geese?" Changsun Wuji said with some understanding.

Li Ke nodded and said, "It should be like this. Many of these people are from our Jinan County. They are usually responsible for raising poultry. You can listen to what the teacher said, and you will know how it is." Something happened."

When Sun Xiangfu came to the stage, the student who was talking about the process of fly adulthood stopped his lecture. Sun Xiangfu motioned for him to give himself the pointer. While handing it over to him, he and the other two students on the stage began to pick out some pictures that hadn't been posted before, ready to replace them at any time.

At this time, Sun Xiangfu also cleared his throat and began to talk, saying, "Everyone knows that chickens, ducks and geese like to eat insects, fish and shrimp, and they have learned about farming in the farming industry in Jiuyuan County. People should also know that chickens and ducks that feed on insects, fish and shrimps lay eggs with redder yolks, and salted eggs with more oil in the yolks, which are more flavorful. They only eat chaff and bran. Chickens and ducks that grow up on feed do not have these characteristics when they lay eggs. This is due to the structure of their food. The nutritional value of the food is different, and the eggs laid are naturally different. It is said that the nutritional value 'This term may not be understood by many people, so let me explain it to you with a metaphor!

A pregnant woman, after giving birth to a child, eats good tonics every day, and a pregnant woman, after giving birth to a child, eats grain bran and coarse grains, which can only lie to the stomach, so the children they give birth to will be different , pregnant women who eat tonic will give birth to a fat boy, pregnant women who eat coarse grains will give birth to a scrawny, malnourished boy, apply this principle to chicken, duck and raw eggs, it is roughly the same, everyone got it! "

A smart person like Changsun Wuji naturally understood after hearing Sun Xiangfu's speech, and said, "I said, why do the eggs produced in your Jiuyuan County taste better than those produced in Guanzhong! The original problem Out of here, if you let these students teach the common people how to feed flies, it is equivalent to getting nourishment for chickens and ducks!"

Sun Xiangfu nodded, and said to Changsun Wuji in the audience, "There are some reasons, but not all."

"Then please explain it clearly to us. This is related to the production of the common people. We officials should have a better understanding."

Sun Xiangfu nodded and said, "Then I will tell everyone, you know how much food a chicken and duck eat a day, and to provide them with this food, we need How much does it cost? Also, what is the return on their diets?"

All right!For the first question, some officials present who have attended civil studies classes or inspected the various breeding industries under their control may be able to barely answer it.

Soon, a picture in the form of a table was hung on the movable blackboard by a student. Sun Xiangfu pointed to the data on it with a pointer and said, "If chickens are raised in large quantities, the grains fed to them are average. More than two taels per day, a full-grown chicken consumes more than seven catties a month. Calculated at 84 catties a year, an adult duck needs to eat more than three taels of grains per day on average, more than nine catties a month, one hundred and eight catties a year catty.

Based on the current grain price of 28 cents a stone in Shannan Province, every penny can buy three catties of rice. Then, the food cost of raising a chicken is 36 coins a year, and raising a duck costs In terms of cost, in [-] wen. "

After Sun Xiangfu pointed to the numbers on the form hung by the students, everyone understood. Of course, these data are not critical. What they want to know most now is the benefits of raising flies.

Seeing that everyone nodded to express their understanding, Sun Xiangfu said again, "The business value of grains and insects is different from that of insects, fish and shrimps. It is the same as what I said in the analogy just now. For chickens, one is coarse grains, One is a tonic, so if we feed different foods to chickens and ducks, the quantity and quality of eggs we get are also different.

Here, there is a data calculated by our students. Judging from the chicken breeds with the highest egg production rate raised in our Jiuyuan County, the chickens fed with grains and grains are counted as 180 chickens. Among them, the chickens that produce the most eggs each year reach The average annual egg production of 150 chickens was 120, and [-] died within one year.

And in the other thousand chickens fed with feed mixed with green materials such as insects, fish and shrimps, and broccoli mixed with half the proportion, the highest annual egg production reached 230 seven, and a thousand chickens The average annual egg production reached 43, and only 51 died within a year. That is to say, even if the nutritional value of the eggs is ignored, the number of eggs produced alone Counting, the difference in the number of eggs produced by a chicken is [-] per year, and the death rate is more than doubled. Everyone will count the economic value of the difference! "

Through the meal when he gave Sun Xiangfu a new year gift, Changsun Wuji knew the importance of officials being familiar with market prices. Therefore, he had already issued an order to let the officials under his rule find out these situations. Officials in Shannan Road generally know the price of eggs, duck eggs, or chickens and ducks sold by the people in the Shannan Road area to the vendors who receive the goods. Among them, raw eggs cost about ten yuan a catty, about eight yuan, and duck eggs cost eight yuan a catty. Jin, about seven or so.Of course, the eggs produced by chickens and ducks in Jiuyuan County are generally not sold much, because they will make them into marinated eggs, salted duck eggs, egg pancakes, cakes and the like, and the price will double.

In terms of eggs alone, the difference between the output value of a chicken is more than 1 yuan, and the survival rate is added to the head of each chicken, and the difference is at least more than [-] yuan, because, dead chickens do not lay eggs at all, if more than [-] chickens live, they can produce more than [-] eggs a year, and these living chickens are also worth some money.

If this number is used in two chicken farms with a breeding scale of 80, then the gap will disappear. That is [-] yuan, [-] yuan, and if it is calculated according to the number of chickens and ducks in the country?
You know, according to the statistics of the Ministry of Agriculture, the number of poultry in Datang is almost 20 billion or more. Isn't that a gap of 6000 million?

Of course not, because Sun Xiangfu's assumption is not valid.

First of all, it is impossible for the people of the Tang Dynasty to use all food to feed chickens and ducks, especially ducks. In major breeding areas like Shannan Road, most of them are free-range, and the people invest very little food in duck food.

What's more, all the poultry in Datang now have a high egg production rate like the chickens and ducks used by the children of Jiuyuan County for experimental statistics, which is less than [-]%. Most people's homes are still fed a few years ago The annual egg production rate of the young chickens is at least [-]% lower than that of the chickens raised by them, which is nearly half of the output of the high-yielding laying hens of later generations, which lays almost one egg per day!

The purpose of him asking everyone to calculate this account is just to let everyone see the gap, not to breed in this way, which actually creates so much more profit for everyone. There are more eggs and duck eggs on the market, and the price is lower. It will drop sharply, and profits will continue to shrink. It is impossible to produce more, so you can earn more at the price.

(End of this chapter)