After testing all the silkworm moths, the large forces of the Jiangnan group began to withdraw from the three counties of Huzhou.

On the day the troops withdrew, 10,000 people in the three counties were empty, and all the people ran to the river to see each other off. There are no flower banners, no touching scenes of reluctance to tear goodbye. They just silently turned into jars of self-brewed local wine, baskets of peaches and watermelons, and loads of dried vegetables and salted fish...... Stuffed the boat that the team members were on, and then ran away shyly, not caring if it would sink the boat......

The people of this era are not so highly conscious, and they are even a little numb. But as long as you are a human being, as long as you don't believe in one God, you will definitely have a grateful heart and know who is good to you.

Although the final result has not yet come out, the people admit it!

They kept sending the Jiangnan Group's fleet to the edge of Taihu Lake before reluctantly turning back.

"What a touching picture this is, the employees of the group and the people of Jiangnan are heart-to-heart......" Wang Shimei, director of the propaganda department of Jiangnan Group and Wang Shizhen's cousin, was moved to wipe his tears, and said to several propaganda officers who were painting quickly: "Quickly record these pictures, and I will put them on the front page of the next issue of "Jiangnan Newsletter"!" ”

Alas, the warm and touching scene changed when it landed......

~~

However, not all the teams were withdrawn, after all, whether the fight against the epidemic was successful or not will not be known until the summer silkworms hatch.

Zhao Hao left a 30-member working group composed of agricultural technicians, medical students, and Jiangnan textile representatives in each of the six counties to continue to track and test the hatching and growth of summer silkworms.

Silkworm farmers in various counties have also begun to get busy, and they want to 'green' silkworm eggs so that they can hatch summer silkworms.

The so-called 'Dianqing' is the great wisdom of the working people of our country. Because silkworm moths have evolved a characteristic in nature that allows silkworm eggs to lie dormant first, and then begin to develop when the weather warms up after wintering, this is called 'diapause' in biology.

Diapause can help baby silkworms avoid harsh winters, but it is not friendly to silkworm farmers, leaving their silkworms only to give birth once a year. Especially in the warm Jiangnan region, after the spring silkworms form cocoons, there is still a long summer and autumn season to continue raising silkworms.

But no matter how high the temperature is, the eggs laid by the silkworm moth do not move at all, and they have to freeze in winter before they can begin to develop silently in the second year. This has significantly limited the production of raw silk around the world...... Why is there such a shortage of raw silk in Japan? Isn't it just that the yield of silkworms they raise themselves is too low?

Only Chinese silkworm farmers invented the method of 'promoting greening' as early as the Song Dynasty to relieve the diapause of silkworm eggs, so that silkworm eggs can develop more than ten days after laying. In this way, summer and autumn silkworms can be raised in addition to spring silkworms, and the output will naturally increase dramatically.

They will intervene from the mating stage, and after two hours of mating, they will manually separate the male moth and let the female silkworm moth lay eggs. Let it be left for half a day to fully fertilize, and then soak the mulberry hemp paper full of silkworm eggs in warm water for more than ten seconds, quickly take it out and dry it.

After about eight days, a cyan spot will appear on the top of the black silkworm egg, which is called 'dot green'. The eggs are ready to hatch soon. This is the so-called 'rejuvenation'.

According to Ma Yilong's speculation, this method is to use warm water to remove the heat from the surface of the silkworm eggs, making them mistakenly think that the sky is already cold. Then the temperature slowly rose, and I thought it was spring again. When the conditions are met, diapause is lifted.

In order to prove his guess, he put the silkworm eggs in the ice cellar for a period of time and then took them out, and found that the spot was successful, and the rate of spot green was much higher than that of using warm water alone.

Zhao Hao also offered him a new method. Wash it with dilute sulfuric acid solution, and you can also increase the rate of spotting to eighty percent without going to the ice cellar, and it can also effectively kill the bacteria in the silkworm sand and moth powder attached to the silkworm eggs, and play a good disinfection role.

Its practical dilute hydrochloric acid solution will have a better effect, but at present, the 04 Institute can only obtain hydrochloric acid in the laboratory by mixing concentrated sulfuric acid with table salt, but the cost of such large-scale production is obviously too high.

One is that there is not so much concentrated sulfuric acid. Although thousands of years ago, alchemists had mastered the method of calcining pyrite or sulfur to produce sulfuric acid.

But the difficulty of industrial production is completely different, right? Zhang Jian and Qu Rukui don't know how many brain cells, how many failures, and how much money they spent to build three tower-like reaction devices, which can barely reach a daily output of 100 kilograms of concentrated sulfuric acid.

The reason why it is reluctant is because the reaction unit breaks down from time to time, and the furnace has to be shut down for several days each time.

The use of sulfuric acid is too wide, and the average daily output of 200 catties is not enough to plug the teeth. But Zhao Hao told Zhang Jian that they should not be in a hurry, and that they should be used internally by the research center first. The current preparation unit will be put into operation for one year, and after the improvement is completed, the expansion of production capacity will be considered.

Therefore, the production of hydrochloric acid from sulfuric acid can only be done in the laboratory, and industrial production is not possible at present.

~~

In fact, if it is produced industrially, let alone sulfuric acid, even table salt cannot be used.

Jiangnan Group has not set foot in the salt industry in China, after all, this thing is too taboo. Otherwise, Pudong, with its vast coastal flats, is the perfect natural salt farm. It's a pity that how many pairs of eyes are staring at Jiangnan Group, how dare Zhao Gongzi mess around?

So we can only count on lawless overseas, but the problem is that Tamna Island, which is currently controlled by Zhao Gongzi, is not suitable for a salt farm...... Although it is surrounded by the sea and has plenty of seawater resources, it does not have a flat beach to dry the salt.

The same is true for Japan, where salt works cannot be built at all along the rugged coastline. And the temperature is too low, and the salt evaporates too slowly when drying.

Although Tamna Island is known as a subtropical marine climate, it is affected by the Xiaoice River, and the temperature cannot rise, so Zhao Hao gave up the plan to set up a salt farm in Tamna or the outlying islands of Japan after letting people investigate.

However, as an important strategic resource and chemical raw material, Zhao Hao will not give up. He set his sights on the treasure island of Taiwan - the Budai Salt Farm in the southwest of Taiwan, and the Lianghuai Changlu Salt Farm and the Yingge Sea Salt Farm on Hainan Island, and called it one of the three major salt farms in China!

Although the Yingge Sea Salt Farm has not yet been established, you may encounter thieves when you go there...... The fog is because Hainan Island is already a familiar place for the imperial court, and it is very inconvenient to have the Qiongzhou Mansion to keep an eye on. At present, the island of Taiwan is still a place where pirates and natives are entrenched, and the difficulty of occupying it is naturally much lower.

Moreover, Taiwan is also the forward base for the future south of Luzon, and after Zhao Gongzi completes the preparations, he will move south to recover Taiwan from the pirates for the Ming Dynasty......

~~

It seems to be talking about silkworm babies, how did you get involved in the recovery of Taiwan?

It's far away, let's get down to business.

In short, with the double blessing of Zhao Gongzi and Ma Yilong, the green rate of silkworm seeds in the six counties of Jiahu has reached more than eighty percent.

In mid-May, the ants and silkworms hatch one after another. The silkworm farmers hurriedly cut the most tender mulberry leaves into small squares and sprinkled them on the dustpan. Then take the silkworm seed paper in one hand and the silkworm chopsticks in the other, evenly pat the back of the silkworm seed paper to make the ant silkworm fall on the basket, and then scrape the ant silkworm with goose feathers, arrange it into a circle, and send it to the silkworm room where the disinfection is completed and the customer is re-received.

After that, it's time to take care of it day and night.

The silkworm farmers have lost their harvest in the spring, and now they can only count on the summer and autumn silkworms, which is really more careful than taking care of the babies. And obey the guidance of agricultural technicians, let them do what they want, lest they lose their efforts because of their own reasons......

The inspectors of the working group were also very nervous. They also did not check village by village in vain, and immediately rushed over to inspect where there was a situation, lest they find the diseased silkworm in time and let the epidemic spread again.

Fortunately, the previous sanitizing work was done very solidly. After random inspection, it was found that the first-year-old silkworms still suffering from whiteveria and rust were less than 1/10,000 in total, and they were gathered in more than a dozen silkworm houses. It should be because there are moths that have slipped through the net during testing, or because there are bacteria that have not been sanitized.

After the diseased silkworm room was completely sanitized, no new cases were found in the detection of second-instar silkworms.

The third-instar silkworm also had zero new additions, and the silkworm period passed smoothly. This relieved everyone.

First, there have been zero new cases for so long, which basically means that the germs have been extinct. In fact, in this era, sericulture was based on the family unit, not large-scale sericulture factory production. As long as silkworm farmers pay attention carefully, the germs will not spread so easily......

The second is to survive the silkworm period safely, even if there is an outbreak of the epidemic later, it can always keep seven or eight points of harvest......

The result is gratifying that the fourth-in-star silkworm also has zero new additions.

Five-instar silkworms, or zero new additions.

After the cocoon of the silkworm, there is still zero new addition!

The silkworm disease that ravaged the six counties in the spring disappeared completely, as if it had never appeared before......

And it may be because of the passive breeding before, and then the use of scientific greening, sanitation and disinfection, and scientific feeding, the rest of the diseases have disappeared, and the final cocoons are many, big and white, which is even better than the harvest of spring silkworms!

~~

When the good news reached Jiangnan Building, Zhao Gongzi jumped up from the boss's chair, hugged Jiang Xueying, who came to report the good news, and kissed him heavily in front of several directors.

Wang Mengxiang and the others hurriedly embarrassed not to turn their heads, how can they not be ashamed regardless of the occasion. It's good to be young......

Jiang Xueying still had half the majesty of the president, and fled with a sigh.

The directors didn't dare to laugh if they wanted to, and their faces were flushed.

Zhao Hao smiled at the directors without shame: "Wow, there are no new additions in a month, I think we can declare a complete victory!" ”

"Hehe, that's so exciting...... Oh no, I'm talking about this Spring Thunder operation. Wang Shimao coughed twice in embarrassment, and hurriedly changed his words: "Don't look at the movement, it's like a battle." ”

"I almost scared the old man to death." Wang Mengxiang also smiled: "I'm talking about the cost, there are 300,000 taels before and after." ”

"How much? Not much either. Zhao Gongzi was thick-skinned, didn't care about their ridicule, and said to himself: "Preventing the spread of the epidemic has enhanced the cohesion of Jiangnan and improved the confidence of the people in the group." A set of epidemic prevention and control systems has also been established, which will not be changed! ”

"That's what Childe said." The directors praised one after another: "How to explain before, the common people didn't understand what science is, but now they all know that science is good." ”

"But we still can't let up completely." Zhao Hao continued to say with great interest: "These six counties are free of germs, but there will still be other counties, and there is still the possibility of outbreaks." Therefore, the county development companies and Jiangnan Textile should do a good job in normalized silkworm disease monitoring, and the more early detection and early disposal, the smaller the loss. ”

"In addition to silkworm disease, infectious diseases of humans and animals are also a truth, I think it is better to establish a special epidemic prevention committee to be responsible......

Secretary Ma was beside him, making notes quickly, but his heart was about to die. People also want to kiss, the kind of public ......