With soil fertilizer, there are naturally soil pesticides. Ma Yilong's pesticide laboratory has developed more than 300 proven recipes for soil pesticides for different diseases of various crops, which basically cover common diseases of various crops.

This is not just Mr. Zhao’s contribution. As early as more than two thousand years ago, our ancestors began to use plant-derived biological pesticides to treat various diseases of crops.

For example, in the rainy season of the south of the Yangtze River, burn chrysanthemum leaves into ashes and sprinkle them on the crops, so that the crops will not suffer from pests and diseases. For example, sprinkle rabbit poop into the ground with seeds to kill tigers; spray leek water to prevent and control aphids; brush rice soup on cotton branches and leaves, suffocate red spiders, etc....

Among the more than 300 local pesticides, half are local secret recipes collected by development companies in each county. In this era, information was extremely unobstructed, and information was often not exchanged in different villages in the same county, so many recipes were only circulated on a small scale. After the establishment of the Agricultural College, Ma Yilong asked each county to find ways to collect various agricultural secret recipes. And it was also considered to be a performance... Whoever collects more will train agricultural technicians for whom. If you can't collect, I'm sorry, the quota is full. Come again next time.

Sure enough, those who have served as prefects are all management masters.

In addition, Li Shizhen also contributed seventy or eighty proven prescriptions that are indeed effective, and more than 200 unverified formulas. Although he is a doctor, he has traveled all over the world to write "Compendium of Materia Medica" and collected medicinal materials and prescriptions for half his life. Many of them are used to prevent and control crop diseases and pests.

"I strongly invited him to join the Agricultural College, but he ignored it." Ma Yilong complained depressedly: "What a rare talent, it would be a pity if he didn't come. He could have become the king of pesticides."

‘Where is the king of pesticides…’ Mr. Zhao smiled and said, “He is the dean of the medical school and has to be in the hospital for treatment. He will definitely not be able to get rid of his body.”

"Can the hospital compare with the agricultural college? The country is based on agriculture!" Ma Yilong said proudly.

"It is also very important to save the world, cure diseases and save people. No matter what the difference is, you all have a bright future." Mr. Zhao skillfully asked a mud, and asked again: "By the way, the things I brought back last year..."

"It's planted." Ma Yilong nodded excitedly and took Zhao Hao back to the I-shaped teaching hall.

On the way, he also pointed out the ten acres of corn fields he had taken good care of. Last year, he planted acre of corn with a basket of corn that Zhao Hao gave him. After harvesting, all of them were planted. This year, the planting area has expanded ten times.

"After Autumn, you can harvest 6,000 kilograms of corn. Next year I will find a farm to try planting it." Ma Yilong said proudly: "But my opinion is not to rush to promote it. First, the yield is far from what you said, and you have to continue to choose and breed and increase the yield to be attractive. Second, this new crop must adapt to the soil and soil. If it takes ten or eight years, it will not grow well in Jiangnan. Next year, Sishan and others will go to Beijing to take the exam and ask them to bring hundreds of kilograms of seeds back to the capital to try planting. Since they have been planted in the Imperial Garden there for decades, they should be more suitable for the soil and soil in the north."

Zhao Hao couldn't help but glance at Shi Jizhi. When he saw him, he smiled bitterly. People went to Beijing to take the exam to make friends, but they had to ask people to farm, which was really undecent.

"Why did Brother Lao Sishan let Xishan do this? Just give him some guidance." Zhao Hao relieved the pressure on him, and Shi Jizhi smiled gratefully.

"Oh? Do you have a Xishan Group?" Ma Yilong was surprised and said, "What a big dog!"

"My master does not open a company to make money, but to benefit the people." The two children don't like to listen? They protested loudly.

"Haha, listen to his nonsense? A wolf travels for thousands of miles to eat meat? A dog travels for thousands of miles to eat shit, but his habits cannot be changed." Ma Yilong did not give Mr. Zhao face and took everyone to the open space on the west side of the school building, where a full glass permanent warmer was built.

This is the ten acres of warm-up house that Mr. Zhao promised him at the beginning, but because flat glass is too expensive, it is only one acre at present? The remaining nine acres can only be owe it first.

It's getting warm in April now? Are the glass on all sides of the greenhouse removed? A layer of linoleum is also laid on the top to prevent the crops from being damaged by too strong sunlight.

There are people who are special guarding at the door of the greenhouse to prevent anyone from harming Mr. Meng He’s treasure.

Zhao Hao and others followed him in and saw rows of pine boxes more than half a meter high in neatly placed inside. Plants that were not like middle-earth were planted on the nutritious black soil.

One row has enchanting stems, purple flowers and yellow stamens, which look very beautiful. Secretary Ma fell in love with them at first sight, and thought to himself that the flower is so beautiful, like a daffodil.

"This is a potato." Mr. Zhao said with surprise in his voice: "Is it planted so soon?"

"This is the second batch..." Ma Yilong said lightly. Nothing makes him prouder than planting a new grain.

~~

This is one of the trophys that Zhao Hao looted from two Western sailing ships last year.

Zhao Hao knew that potatoes, sweet potatoes, peppers and the like were taken back to Portugal from America decades ago. After capturing the Duke of Goa and the Oriental Beauty, he ordered their inventory to be collected to see if he could find these things.

However, to his disappointment, the Portuguese food for Japanese trade was quite good. The red-haired ghosts ate bread, the native South Asians ate rice, and the vegetables were all supplied by the Damura family, so I didn't find anything special.

Just when Zhao Hao was about to give up, he suddenly saw the little Lucas who came back to pack his luggage, holding a few pots of flowers in a wooden box, which looked very familiar.

Zhao Hao asked him to take the pots of flowers over and look at them carefully.

Pinto told Mr. Zhao that his adjutant was a handsome guy who loved life and was full of interest. Not only did he love to write poetry, but he also wrote about the boring voyage under the adjustment of flowers and plants...

"Damn, isn't these potatoes?" Mr. Zhao looked at the purple, white and pink potted plants and shouted in silence: "Columbus has worked hard to bring them back to you, but you are a flower seed?"

After hearing the translation, Lucas Jr. told Zhao Hao that it was indeed 40 years ago that Francisco Pizarro brought back this strange round tuber from the Andes. Because its shape is similar to that of mushrooms, it is called "truffles". However, in the Iberian Peninsula, no one serves as food. It is just because its flowers and stems are particularly beautiful, and they are planted as novel ornamental plants by princes and nobles.

When Lucas left Lisbon, he brought a few potatoes and planted them on the boat to express his longing for his hometown...

No wonder a group of idiots who were wasting natural resources was fucked. Mr. Zhao ignored the plea of ​​the poor little Lucas and confiscated his beloved potted plant, asked Chen Huaixiu to take it back to China, hand it over to Ma Yilong, and explained the cultivation method in the letter. In fact, there was no trick, it was similar to growing taro.

Ma Yilong had long heard Zhao Hao brag about the magic of potatoes - this thing is high-yield, drought-resistant and cold-resistant, and is a savior of the poor and a dynasty stabilizer! So how dare you be careless? He quickly transplanted the potted plants into the greenhouse according to Zhao Hao's guidance. After the branches and leaves wither, he dug out the tubers. After the potatoes germinate, cut them into several buds, plant them in carefully prepared seedling soil, serving them like serving their ancestors until now...

~~

At Zhao Hao's strong request, Ma Yilong agreed with a bitter face and digged a few potatoes to taste for it at noon.

After all, he only had to dig four trees. He planned to make half of the remaining potatoes as seed potatoes and half of them left seeds... Because Zhao Hao told him that potatoes are mainly obtained by asexual reproduction of tubers, but in this way the virus will continue to be passed on, and degenerate lesions will appear after several generations, resulting in reduced yields or even extinctions.

Although Bordeaux liquid can be used to use copper sulfate and lime water to attenuate the buds and greatly slow down the degeneration rate. However, it is still necessary to reserve seeds for potatoes, cultivate good varieties through sexual reproduction, and continuously renew the buds. This is a long-term solution.

Zhao Hao asked the two disciples to dig out four potatoes, but the harvest made him a little disappointed. After rinsing out the mud, he saw that the potatoes on each root were not only small in number, but most of them were only the size of quail eggs, and the largest one was just the size of an egg.

"First, there are still ten days before harvest, and the size of an egg will grow at that time." Ma Yilong said naturally: "Secondly, it is still the old problem of not adapting to the local environment. It will take many years to harvest wheat from the north to the south of the Yangtze River, let alone such things that come across the ocean."

"Yes." Zhao Hao nodded deeply. He remembered another time and space. In the 22nd year of Wanli, Jin Xue promoted the planting of sweet potatoes in Fujian. During the Tianqi period, under the pressure of Xiaobinghe, a large-scale planting nationwide began to be carried out on a large scale, but the effect was very poor and the yield was extremely low. Later, Hong Chengchou forced the promotion in Shaanxi, which even caused civil unrest.

As a result, the magical artifact sweet potatoes could not save the Ming Dynasty, and Chongzhen was still hung on the old wicked-neck tree. It was not until the Kangxi period that sweet potatoes adapted to the water and soil of the Ming Dynasty, and their yields gradually increased, and finally created the famous sweet potatoes.

This is also the reason why the three high-yield brothers in South America have been introduced to Europe for decades, and Portugal and Spain have not taken it seriously. It’s not that they don’t eat it—even if the nobles don’t want to eat it, they can still use it to support those lowly farmers.

Why did it smell so much after dozens or hundreds of years? There is no reason, the three brothers adapted and the output returned to normal...

~~

Then why is Ma Yilong confident that he can adapt to the potato in more than ten years?

Because he wants to make potatoes adapt to the environment from a seed, and then select the most powerful plants to continue to cultivate, which can of course greatly shorten the adaptation period.

So it’s not OK to keep the seeds, brothers. Those who have this bad habit must actively correct them!

In addition to potatoes, the greenhouse also planted tomatoes, peppers and sunflowers obtained by Zhao Hao from Japanese missionaries. These have been planted in Japan for many years and have generally adapted to the climate of East Asia and have grown well.
Chapter completed!