After Wei Yan married Da Qiao and Xiao Qiao, he accompanied them back to Anhui City to their hometown.

In the eastern suburbs of Anhui City, surrounded by streams, pine and bamboo shade a village, which is the manor of Qiao Rui, the father of Da Qiao and Xiao Qiao. There is an ancient well in the backyard of Qiaorui's former house, the water is clear and deep, the two Qiao sisters often dress up here, trim their eyebrows and write the spring mountain carefully, pine and bamboo Xiao wear rings, every time they put on makeup, they will discard the residual fat powder in the well, for many years, the well water is rouge-colored, and the water smell is also rouge-scented. As a result, this well has the nickname of Rouge Well.

Wei Yan arrived at the rouge well, smelled the aroma coming from the well, and felt that the rumors were wrong, this was not the aroma of fat powder, but the aroma of pollen around them, because Da Qiao and Xiao Qiao didn't use fat powder to add to their beauty at all.

Moreover, Wei Yan also has a habit of being spoiled by beauties, and he can't look down on women with heavy makeup, who dares to appear in front of him with a big heavy makeup, he must ask the maid to bring clean water and personally wash the woman's face, so that no wife and concubine dare to use fat powder, everyone is facing him with a plain face.

Wei Yan came to the Eastern Han Dynasty, he plagiarized a lot of excellent poems in later generations, but there is one word he can't plagiarize, that is Su Shi's "Nian Nujiao Chibi Nostalgia", especially after he married Xiao Qiao, he could only silently recite this word in his heart: "Go to the east of the big river, and the waves will be exhausted." Romantic characters through the ages. To the west of the base, humanity is, Zhou Lang Chibi of the Three Kingdoms. The rocks pierced the air, the waves crashed on the shore, and thousands of piles of snow were rolled up. The country is picturesque, how many heroes at one time! Thinking about Gongjin back then, Xiao Qiao got married for the first time, with a majestic posture, a lupine scarf, talking and laughing, and the canopy was in ashes. The fugue of the old country, affectionate should laugh at me, early birth. Life is like a dream, and a bottle is still a river. ”

……

This winter, although there was a few snowfalls, it was noticeably less cold than last winter.

Wei Yan had a sad face, because he knew that if the winter was not cold, there would be a big locust plague next year.

The locusts crossed the border and there was no grass, and a large number of crops were not harvested, and Wei Yan shuddered when he thought of this.

He knew very well that both the Han people and the Wei army were very dependent on grain, and if the grain production was greatly reduced because of the locust transit, it would greatly affect his strategic advancement.

It now seems inevitable that next year's locust plague will be inevitable.

Because locusts are a kind of insects that like warm and dry, the weather is dry, the water level drops, the soil becomes more solid, the water content is reduced, and the ground vegetation is sparse, the number of eggs laid by locusts has increased greatly, and it can reach 4ooo ~ 5ooo egg masses per square meter of soil, and there are 5o ~ 8o eggs in each egg mass, that is, there are 2o million ~ 4o million eggs per square meter.

At the same time, in dry years, the water surface of rivers and lakes shrinks and low-lying land is exposed, which also provides more suitable places for locusts to lay eggs.

On the other hand, plants grown in arid environments have a lower water content, and locusts feed on them, growing faster and having higher fertility. On the contrary, the rainy and humid environment has many adverse effects on the reproduction of locusts, the high water content of the plants that locusts feed on will delay the growth of locusts and reduce their fertility, the rainy and humid environment will also make locusts endemic diseases, and rain and snow can also directly kill locust eggs. In addition, the increase in natural predators such as frogs will also increase the mortality rate of locusts.

Since the rebellion of the Ten Standing Servants, there has been no rain in the whole north, sowing millet and wheat are carried from the water in the river to irrigate, the rain and snow water are insufficient, it provides a good breeding environment for the locusts, once the number of locusts is dense, it will cause locust plague, then it is the locust that covers the sky and the sun, devouring crops and seedlings, everywhere it goes, not a single inch of grass grows, it is precisely because the locust plague destroys food production so much, so it is listed together with floods and droughts, and is the three major disasters that affect agriculture.

Wei Yan vaguely remembered that there was a large locust plague in the late Eastern Han Dynasty in history, and a large locust plague broke out in the Central Plains continuously, which was one of the important reasons for the large number of deaths in the population. In more serious cases, there is no food to buy even more money.

Wei Yan sent someone to invite Han Hao to discuss how to prevent the locust infestation.

Han Hao has been favored by Wei Yan for more than half a year, and he is really capable, the Tuntian Corps is prosperous under the management of him and Shi Tao, whether it is grain planting, animal husbandry, or minerals, it has become a strong support for Wei Yan to dominate the world, although other princes are following Wei Yan's example to do Tuntian, it is obvious that they have fallen behind a lot.

Han Hao has a deeper understanding of Wei Yan in the past half a year, once Wei Yan trusts a person, he will be informal, unruly and unruly in front of that person, Han Hao can completely see from Wei Yan's attitude towards himself that the lord trusts himself, because Wei Yan had just practiced martial arts in the back of the General's Mansion at that time, and he was sweating profusely, without changing his clothes or doing any modifications, he took Han Hao into the front house of the General's Mansion with a big grin.

Wei Yan handed Han Hao a piece of paper, the above is the statistics of last year's rain, the rain in the twelve months of the whole year is not enough to catch up with the rain in the three months of the previous year, it can almost be said that it is a year-round drought, the people in the areas under his rule are taking river water and well water for irrigation, and there are many serious drought areas that rely on digging ditches to build water conservancy to barely plant crops, and can barely supply domestic water.

Han Hao caught a glimpse of a large pile of dirt in the council hall, and the soil was very dry and cracked, so he asked, "My lord, are you worried about the lack of rain, which will affect this year's crops?" ”

Wei Yan shook his head solemnly and said, "In the past year, we have built many ditches and irrigated effectively, although the crops are not as good as last year, they will not reduce the yield too much. My only concern is that there may be a locust plague next year! ”

Han Hao was shocked and said suspiciously: "Lord, it's only December, can you deduce that there will be a locust plague next year?" ”

Wei Yan picked up a piece of soil and handed it to Han Hao: "Yuan heir, you see, the soil is so dry, it is the most suitable degree for locusts to multiply, as the saying goes, locusts will grow after a long drought, this is a painful lesson, this year's locust plague is probably inevitable." ”

Han Hao looked ashamed, this was originally something he had to know as a pawn farmer, but it made the lord bother.

Wei Yan's words were like a thunderbolt from the sky, which made him wake up instantly, he knew that there had been a continuous drought since this autumn, there was no autumn rain, and the winter snow had only fallen three or two times, and the locust eggs all over the fields and riverbank soil were buried there unharmed, and they would explode in another five or six months, and then the wheat everywhere would become food for the locusts.

Han Hao vaguely remembered that many years ago, the land of the Central Plains was dry and rainless, the fields were dry and cracked, and swarms of flying locusts appeared everywhere, when the locust swarm flew over, a large area of black pressure was suppressed, and even the sun was obscured, where the locust swarm fell, and the crops in which place were gnawed to the brim, at that time, the people were ignorant and ignorant, and worshipped the locusts as gods, and did not dare to kill the locusts and insect eggs, but only prayed for it to leave their crops, or throw the locusts into other people's fields, causing the insect infestation to become more and more intense, and the people had no harvest, and the magistrates at that time did not care whether the people lived or died, The people are still rampant, starving everywhere, and the people are struggling to make a living, so Zhang Jiao raised the banner of the yellow turban, which has a lot to do with the locust plague.

Wei Yan saw Han Hao's expression and knew that he believed his words, so he happily asked, "Yuan Hei, do you have any good plan to exterminate locusts?" ”

Han Hao thought for a while, and then said: "First of all, to eliminate the ignorance of the people, those small people who ascend to the fight think that the locusts that come from all over the world are locust gods, and the locust plague is a catastrophe from the sky, and the people are powerless, they don't dare to kill the locusts, they just kneel on the ground and pray for the locusts to leave their fields, this idea is very wrong, so it caused the great locust plague a few years ago."

Now that the locust plague has not yet exploded, we have time to educate the people and make them realize that locusts are just ordinary insects, which can be killed, and as long as we unite to destroy locusts together, even if locusts are harmful, they will not cause thousands of miles of red land. ”

Wei Yan nodded and smiled: "Yuanhei, what you said is good.

The former miracle doctor Bian Que once said that his eldest brother treated the disease before the illness was made, and the patient himself did not feel sick at that time, but the eldest brother took medicine to eradicate the root of the disease, making his medical skills difficult to be recognized, so he was not famous, but was respected in Bian Que's family. Bian Que's second brother treated the disease at the beginning of the disease, the symptoms were not very obvious, and the patient did not feel pain, and the second brother was able to cure the disease, so that the villagers thought that the second brother was only very good at curing minor diseases. Bian Que's treatment was done when the patient's condition was very serious, the patient was in great pain, and the patient's family was anxious. At this time, they saw Bian Que piercing the meridians, bleeding with a needle, or applying poison to the affected area to fight the poison, or performing major surgery to point directly at the lesion, so that the condition of the seriously ill patient could be alleviated or cured quickly, so Bian Que heard about it all over the world.

Afterwards control is not as good as control in the matter, control in the event is not as good as control in advance, but unfortunately most people have failed to realize this, and wait until the matter is serious to the point of a mess to seek to make up, make up for it well, of course, it is famous, but more often it is to make up for it, it is too late. ”

Han Hao said with a smile: "What the lord said is very true, we must take precautions, take precautions, and dare to take all measures to deal with the outbreak of the locust plague before it explodes." According to the experience of our subordinates over the years, since locusts prefer dry soil, we should build more water conservancy and irrigate more, so as to ensure that although the weather is dry, the fields are not dry. Since the locust eggs are hidden in the soil, we reclaim a large number of barren lands and plant them, turn out the locust eggs, and kill them in advance. At the same time, we can plant trees and change the weather in locust infested areas, reduce the suitable sites for locust eggs to lay and reproduce, and we can also further intensively cultivate and dig deep into the fields to reduce locust eggs, which will definitely reduce locust plagues to a large extent. ”

Wei Yan stroked his palms and smiled: "Yuan Hei, these measures of yours are very good, you will formulate these measures into articles, and ask the local governments to actively publicize them, so that the people everywhere can actively start to eliminate locust eggs from now on." ”

Wei Yan asked again: "Yuan Hei, eliminating locust eggs in this way is not enough to kill all locust eggs, and when the time comes, there will still be a large number of locusts breeding and harming crops, how are you going to kill these locusts?" ”

Han Hao thought for a moment and replied: "The sentence 'Bingxi Fire' in the Book of Songs refers to the use of fire to trap locusts at night to destroy them. In this dynasty, the people had the Han Dynasty locust extermination ditch method, first digging ditches on the ground and roadside, and then everyone lined up, holding branches, sticks and other things, waving and shouting, driving the locusts into the deep ditch of the ground, and then burying them with soil. ”

Wei Yan shook his head lightly and said: "Yuan Hei, using this ditch method to bury locusts also buries hidden dangers, this locust life is very tough, even if the knife and axe may not kill it, it was originally drilled out of the soil, and buried in the soil can not damage its life, bury it in the soil, and it will not be long before it will harm the crops again." ”

Han Hao exclaimed: "Lord, what should we do then?" ”

Wei Yan thought for a moment and said with a smile: "You can bury while burning, combine the practice in the Book of Poetry with the ditch method, light a fire next to the dug ditch at night, and the locusts will fly into the fire and be burned to death when they see the light, and then sweep into the ditch to bury it." Locusts like to be dry, they die when they enter the water, they can also throw the locusts they catch into the water and drown, if they are locusts, it is best in the morning, there is dew on the locust's wings in the morning, and the jumping and flying are poor, so it is easier to catch. ”

When Han Hao heard Wei Yan say this, he smiled happily and kept nodding, he wanted to find pen and ink to write these down.

Wei Yan waved his hand and pointed at the secretary Ling Xiao Qiao behind him, Xiao Qiao had already quickly memorized all Wei Yan's words just now.

Wei Yan had lived in the countryside for a period of time before he crossed over, and he knew that the human beings at that time had two assistants, one was a frog and the other was a bird.

Frogs, and locusts live in the same type of ecological environment, where there are reeds, weeds in low-lying land, ponds, ditches, etc., are its good place to live, so frogs are the vanguard of restricting the habitat and reproduction of locusts, a frog can eliminate more than 10,000 locusts in a summer; A frog eats an average of 5o locusts a day, up to 266 locusts, even a clumsy toad, can prey on nearly 10,000 pests in three months of summer, according to this calculation, as long as there is an average of one frog in two square meters of crop field, it is enough to inhibit the survival of locusts.

Some birds specialize in eating insects, locust eating birds in the brooding stage, more need to prey on a large number of locusts, taking ordinary swallows as an example, a pair of parent birds and a nest of nestlings can eat more than 162oo locusts per month.

Wei Yan told Han Hao that frogs and birds could greatly help catch locusts.

Han Hao said with a sad face: "Lord, do you want people everywhere to raise frogs and birds?" ”

Wei Yan said with a smile: "Why can't you raise frogs, those that are easy to irrigate can raise frogs, as long as there are forty or fifty frogs in an acre of land, there is no need for the people to hunt locusts themselves, and the frogs can do it for them." As for the birds, although it is not convenient to raise those that fly around, you can also raise some chickens, ducks, and geese to help catch locusts. ”

"Can chickens, ducks and geese help destroy locusts?" Han Hao never thought that those ordinary poultry could have such a function.

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