With soil fertilizers, there will naturally be soil pesticides. Ma Yilong's pesticide laboratory has developed more than 300 kinds of soil pesticide prescriptions for different diseases of various crops, basically covering the common diseases of various crops.

This is not just Zhao Gongzi's contribution. As early as more than 2,000 years ago, our ancestors began to use plant-derived biological pesticides to treat various diseases of crops.

For example, during the rainy season in the south of the Yangtze River, chrysanthemum leaves are burned into ashes and sprinkled on crops, so that crops will not suffer from pests and diseases. Another example is to sprinkle rabbit feces into the ground with seeds, which can kill ground tigers; spraying leek water to control aphids; Brush rice soup on cotton branches and leaves, suffocate red spiders, etc., etc......

Of the more than 300 kinds of soil pesticides, half are local secret recipes collected by county development companies. In this era, information was extremely unsmooth, and it was often impossible to exchange information between different villages in the same county, so many recipes were only circulated in a small area. After the establishment of the Agricultural College, Ma Yilong asked the counties to find ways to collect all kinds of agricultural secrets. And it's performance...... Whoever collects more will train more agricultural technicians. If you can't collect it, sorry, it's full, so come back next time.

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

In addition, Li Shizhen also contributed 70 or 80 kinds of effective prescriptions, as well as more than 200 formulas that have not yet been verified. Although he is a doctor, in order to compile the "Compendium of Materia Medica", he has traveled all over the world and collected medicinal materials and prescriptions for half his life, many of which are used to control crop diseases and pests.

"The old man tried his best to invite him to join the Agricultural College, but he ignored him." Ma Yilong complained depressedly: "What a rare talent, it's a pity not to come, he could have become the king of pesticides." ”

"What about returning the king's pesticides......" Zhao Gongzi scolded and said with a smile: "He is the dean of the medical school, and he has to sit in the hospital, so he will definitely not be able to pull away." ”

"Can a hospital compare to an agricultural college? The country is agriculture-oriented! Ma Yilong said proudly.

"It is also very important to hang a pot to help the world, and to cure diseases and save people. There is no need to distinguish between the superior and the inferior, you all have a bright future. Zhao Gongzi skillfully and with a thin mud, he asked again: "By the way, those things I brought back last year......

"It's planted." Ma Yilong nodded excitedly and returned to the I-shaped teaching house with Zhao Hao.

On the way, he also pointed out to Zhao Hao the ten acres of corn land that he had carefully taken care of. He used a basket of maize given to him by Zhao Hao last year to plant one acre of corn, and after harvesting, he planted all of it, and this year's planting area has expanded tenfold.

"I can harvest 6,000 catties of corn in the autumn, and next year I plan to find a farm to try planting." Ma Yilong said quite complacently: "But my opinion is not to rush to promote, first, the yield is far from the level you said, and you have to continue to select and breed, and the yield will be attractive to you." The second is that this new crop has to adapt to water and soil, and it will not grow well in Jiangnan in ten or eight years. Next year, Sishan and they will go to Beijing to catch the exam, and let them bring a few hundred catties of seeds back to Beijing to try planting, since they have been planted in the imperial garden for decades, they should be more suitable for the water and soil in the north. ”

Zhao Hao couldn't help but glance at Shi Jizhi? Seeing him, he also smiled wryly. People go to Beijing to take the essay exam to meet friends, but they have to ask someone to farm when they go to Beijing to take the exam, which is really undignified.

"Where is this kind of thing, Brother Laosishan, let Xishan Group do it? He just needs to guide him. Zhao Hao relieved his pressure, and Shi Jizhi smiled gratefully.

"Oh? Do you still have a Xishan Group? Ma Yilong was taken aback and said: "What a big dog!" ”

"My master didn't open a company to make money, but to benefit the people." Two little kids don't like to listen to it anymore? Loudly protested.

"Haha, listen to his nonsense? Wolves travel thousands of miles to eat meat? Dogs travel thousands of miles to eat, and their habits can't be changed. Ma Yilong didn't give Zhao Gongzi face, and led everyone to the open space on the west side of the school building, where an all-glass permanent greenhouse was built.

This is the ten-acre greenhouse that Zhao Gongzi promised him at the beginning, but because the flat glass is too expensive, it is only one acre in size at present? The remaining nine acres can only be owed first.

It's getting warm in April? Remove the glass on all four sides of the conservatory? Also topped with a layer of linoleum? In case the sun is too strong and the crops are damaged.

Is there someone guarding the door of the conservatory? Prevent any person or animal from harming Mr. Mon's treasure.

Zhao Hao and the others followed him in, only to see rows of pine boxes more than half a meter high neatly placed inside, and plants that did not look like Middle Earth were planted on the nutritious black soil in the boxes.

One of the rows has enchanting stems, purple flowers, and yellow stamens, which look very beautiful, and Secretary Ma likes it at a glance, and says that this flower is so beautiful, just like a narcissus.

"It's a potato." Zhao Gongzi's voice was full of surprise: "It was planted so quickly? ”

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

~~

This is one of the trophies that Zhao Hao looted from two Western galleons last year.

Zhao Hao knew that potatoes, sweet potatoes, peppers and the like had been brought back to Portugal from the Americas decades ago, and after capturing the Duke of Goa and the Oriental Beauty, he ordered to collect their inventory to see if he could find these things.

To his disappointment, however, the Portuguese who traded with Japan had a very good meal. The red-haired ghost eats bread, the South Asian natives eat rice, and the vegetables are all supplied by the Omura family, and nothing special is found.

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

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

Pinto told Zhao Gongzi that his lieutenant was a handsome young man who loved life and was full of interest, and not only loved to write poetry, but also wrote about the boring voyage under the spice of flowers and plants......

"Damn, isn't this a potato?" Zhao Gongzi looked at the purple, white, and pink potted plants, and shouted: "Columbus worked hard to bring you back, but you are a flower seed?" ”

After listening to the translator, Lucas Jr. told Zhao Hao that it was indeed 40 years ago that Francisco Pizarro brought back this strange round tuber from the Andes, which was called 'truffle' because of its similar shape to mushrooms, but in the Iberian Peninsula, no one used it as food. Because of its beautiful flowers and stems, it was cultivated as a novel ornamental plant by the princes and nobles.

When little Lucas left Lisbon, he took a few potatoes with him and planted them on the boat as a reminder of his hometown......

A group of stupid people who are tyrannical and devastating, no wonder they were by the big man. Zhao Gongzi ignored the pleading of poor little Lucas, confiscated his beloved potted plants, asked Chen Huaixiu to take them back to China, handed them over to Ma Yilong, and explained the cultivation method in the letter. In fact, there is no doorway, it is similar to planting taro.

Ma Yilong has long heard Zhao Hao boast about the magic of potatoes - this thing is high-yield, drought-resistant and cold-resistant, and it is a savior for the poor and a stabilizer of the dynasty! So how dare you be careless? He hurriedly followed Zhao Hao's guidance and transplanted the potted plants into the greenhouse. After the branches and leaves have withered, the tubers are dug up. After the potatoes germinate, they are cut into several sprout pieces, planted in carefully prepared seedling soil, and served like their ancestors until now......

~~

Under Zhao Hao's strong request, Ma Yilong agreed with a painful face to dig a few potatoes and taste them at noon.

He calculated that he was only allowed to dig four trees, and he prepared half of the remaining potatoes for seed potatoes and half for seeds...... Because Zhao Hao told him that potatoes are mainly obtained by asexual propagation of tubers, but in this way, the virus will continue to be passed on, and degenerative lesions will appear after a few generations, resulting in reduced or even extinct yields.

Although the Bordeaux liquid can be prepared with copper sulphate and lime water to reduce the toxicity of the buds and greatly slow down the rate of degradation. However, it is still necessary to reserve seeds for potatoes, rely on sexual reproduction to breed good seeds, and constantly renew the sprouts, so that it is a long-term solution.

Zhao Hao asked the two disciples to dig up four potatoes by hand, but the harvest made him a little disappointed. After washing away the mud, I saw that the potatoes on the roots of each plant were not only small in number, but most of them were only the size of quail eggs, and the largest was the size of an egg.

"First, there are still ten days before the harvest, and they will all grow to the size of eggs by then." Ma Yilong said as a matter of course: "Second, it is still an old problem of not adapting to the soil and water, and it will take many years to transplant wheat from the north to the south of the Yangtze River to harvest normally, not to mention this kind of thing that has drifted across the ocean." ”

"Yes." Zhao Hao nodded thoughtfully, he remembered that in another time and space, in the twenty-second year of Wanli, Jin Xue had promoted the planting of sweet potatoes in Fujian, and during the Apocalypse, under the pressure of the Xiaoice River, the whole country began to plant on a large scale, but the effect was very poor and the yield was extremely low. Later, Hong Chengchou forcibly promoted it in Shaanxi, and even caused a popular uprising.

As a result, crossing the artifact sweet potato did not save Daming, and Chongzhen still hanged himself on the old crooked neck tree. It was not until the Kangxi period that the sweet potato adapted to the water and soil of the Ming Dynasty, and the yield gradually increased, and finally created the famous sweet potato prosperity.

This is also the reason why the three prolific brothers from 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 bother to eat it, they can still use it to feed the lowly farmers.

Why is it really fragrant after dozens or hundreds of years? For no other reason, the three brothers adapted, and the production returned to normal......

~~

So why is Ma Yilong confident that he can adapt to potatoes in more than ten years?

Because he has to let the potatoes start from a seed to adapt to the environment, and then select the most powerful plants to continue to cultivate, of course, the adaptation period can be greatly shortened.

That's why you can't keep a seed, brothers. If you have this bad habit, you must actively correct it!

In addition to potatoes, the greenhouse is also planted with tomatoes, peppers and sunflowers that Zhao Hao received from Japanese missionaries. These have been cultivated in Japan for many years, and they are generally adapted to the climate of East Asia, and they are growing well.

But the importance can't be compared to potatoes......