The Rise of the European Emperor

It is midsummer and mosquitoes in Europe are also very active. Marin wasn't afraid, anyway, he was rough-skinned and thick-skinned. However, little Caesar was so afraid that he was bitten by mosquitoes, and Angela was so distressed that she burst into tears.

Marin naturally remembered his plan to grow wormwood in tropical areas and smoke mosquitoes with wormwood, so he sent someone to the wormwood grass to collect a lot of wormwood leaves, and put them in the master bedroom after drying. Mosquito repellent was lit. Although the smell is not good, the pink and tender little Caesar finally avoids the invasion of mosquitoes.

To be honest, there are not many mosquitoes in Europe. This is mainly because, European agriculture is mainly dry land. Mosquitoes like to hide in paddy fields. Therefore, there are often more mosquitoes in places where rice is grown than in places where rice is not grown.

In later generations, Marin was not very happy to return to his hometown during the summer. Because the mosquitoes in my hometown are really too big. Probably, those mosquitoes developed well in the paddy fields with abundant chemical fertilizers. One by one, they are all "Yao Ming" in the mosquito world, and they hurt people.

Europe has only dry land and no paddy fields, so mosquitoes are naturally much less. However, the East Frisian region, with its swampy land, is just right for mosquitoes. Therefore, there are more mosquitoes here than in other areas. But compared with the real water town area, it is still much less. Under the smoke of wormwood, these mosquitoes naturally cannot become a climate.

After helping his son successfully drive away the mosquitoes, Marin put his arms around Angela and began to brag, saying that he was "wisdom like a torch" and discovered how magical wormwood is...

Unexpectedly, Angela was very disrespectful:

"Isn't it just mosquito repellent, we also have similar flowers and plants in Italy."

"Ah?" Marin's Newton couldn't blow any longer, and he was a little exasperated. Fortunately, the two of them are here, otherwise they will lose face.

"In my hometown in Italy, there is a kind of chrysanthemum, which is also very powerful. It can not only repel mosquitoes, but also poison flies!"

"Pyrethrum?" Marin suddenly reacted. Isn't it? Pyrethrum is one of the most effective plants in repelling flies and mosquitoes. The most important thing is that its toxicity is only aimed at small insects such as flies and mosquitoes, but it is not toxic to large mammals such as humans.

Moreover, Marin also remembered that his high school biology teacher in his previous life had said that pyrethrum is a natural plant pesticide. Dry the pyrethrum, grind it into a powder, add a little water, get a little soap to make a suspension, and then you can spray it directly on the crops.

This pyrethrum natural plant pesticide can effectively control pests and diseases such as aphids, leaf chrysanthemums, cabbage worms, golden flower insects, etc., and is very beneficial to the growth of crops.

However, the effects that Marin's biology teacher talked about in his previous life did not attract farmers. why? The cost is high...

Pyrethrum is a foreign product native to Europe, and it takes a large area of ​​land to plant, and also needs to pick chrysanthemums, dry and make flour, which is very troublesome and expensive. At least, much higher than factory-made chemical pesticides bought from agricultural companies. The common people are meticulous, and the ghosts do those thankless things. So, what if pyrethrum pesticides are environmentally safe? High cost, nothing to talk about...

However, Marin now travels back to the 16th century. In this era, there are no chemical pesticides. And Marin is not a chemistry major, and does not understand the configuration of chemical pesticides. In this case, botanical pesticides such as pyrethrum are very useful...

Marin remembers that the biology teacher who was an environmental activist in his previous life also said that pyrethrum, tobacco and fish vine are the "three major plant pesticides" in the world.

Of course, fish vines are native to tropical and subtropical regions of East and Southeast Asia, so Marin doesn't have to think about it. Even if they are introduced, they cannot be grown locally.

And tobacco, which is still in the Americas at this moment, requires manpower to find, and no need to think about it. However, in the future, it is possible to light a variety of tobacco, on the one hand, use it to make cigarettes,

On the other hand, it can be soaked in water as a pesticide.

As for pyrethrum, this stuff is native to Europe, and it can be introduced and planted on a large scale.

It seems that wormwood leaves can only repel mosquitoes when ignited, while pyrethrum can kill mosquitoes and flies. After thinking about it, Marin still thinks it is safer to use mugwort to repel mosquitoes. At least, the toxin is not as strong as pyrethrum. However, pyrethrum also needs to be planted on a large scale. It is mainly used to configure pesticides and control pests.

In fact, in the past few years, after Marin introduced potash and phosphate fertilizers, plus the use of salt water for seed selection, the yield per mu should theoretically reach more than 600 pounds.

It is a pity that there are large and small pests and diseases every year, and finally the yield per mu can only reach about 400 pounds. If there are enough pesticides, the yield per mu will inevitably reach five or six hundred pounds. By then, Marin's income will have increased by half...

To this end, Malin specially took out 10,000 mu of land, which was planned to be used for the concentrated planting of pyrethrum. In addition, 10,000 mu of land was also used for planting wormwood...

Wormwood can be used as a traditional Chinese medicine with multiple medicinal effects. At the same time, it can also be used as a weak plant pesticide, and it can also be used to repel mosquitoes.

As for the pyrethrum, needless to say, it is highly toxic, and it was cultivated to be used as a pesticide. At that time, there will be enough plant pesticides made from pyrethrum, and wherever there are diseases and insect pests, they will be sprayed...

After making plans, Marin called Kohler and asked him to arrange manpower to go all over Europe to collect pyrethrum seeds for the planting of the 10,000 mu of land.

According to Angela, pyrethrum is very common in Europe and can be seen everywhere in Italy. However, it is not very common in northern Germany.

So Marin asked Kohler to send someone to Italy to collect more pyrethrum seeds for local planting. In short, be sure to find enough seeds to plant 10,000 mu of land.

As for the cultivation of wormwood, Marin felt that there should not be enough seeds to plant 10,000 mu. Because, after the successful cultivation in the glass greenhouse, Marin only let people plant wormwood with an area of ​​​​a few acres. Even if all the seeds were collected, it would only be enough to plant hundreds of acres of land.

Still, that's not a big deal. As long as a few more rounds of planting, there will be enough seeds to plant 10,000 mu of land...

Speaking of this pesticide, Marin thought of the earliest pesticides - Bordeaux mixture and lime sulfur mixture.

However, the Bordeaux mixture is copper sulfate. Now that copper is so expensive, the Bordeaux mixture is obviously not cheap. Therefore, even if Marin knew about Bordeaux mixture, he would not engage in it. Because the cost is too high...

It is the lime sulfur mixture that can be done, and Ma Shan can do it. Because the lime-sulfur mixture is made of quicklime and sulfur. And quicklime and sulfur are very common in Europe, the price is also cheap, it is a good inorganic pesticide.

In addition, Marin also remembered that the plant ash water also seems to have a certain insecticidal effect, and it is also a good potash fertilizer...

In addition, the biogas liquid after fermentation in the biogas tank is also a very high-quality fertilizer, and also has a strong insecticidal effect...

Moreover, biogas liquid can also be used to soak seeds, because it has strong fertility and a certain insecticidal effect at the same time. More healthy and easy to grow after going down...

In fact, the seeds produced by later seed companies have been soaked in a specific nutrient solution. These nutrient solutions not only have sufficient nutrients, but also kill germs in the seeds. In this way, the seeds will grow healthier and easier to grow after they are planted. And if you use ordinary grain particles as seeds, because it may carry some germs and nutritional problems, the growth will not be so good...

The more Marin thought about it, the more excited he became, and the more he thought about it, the more excited he became. He wrote down all the knowledge he had neglected in his previous life in a small notebook. Of course, Chinese characters are used, and even if someone steals it, no one in Europe can understand it at this time...