Adequate fertilization, combined with the best seeds, and good field management, can double the yield of the field in favourable weather conditions.
Double.
Li Chao said very easily, but Li Shimin and the prime ministers kept their mouths shut one by one and did not speak.
Li Chao actually said this before, but who believes it Anyway, Li Shimin didn't really believe it, what are you kidding if you double the production, you will go to heaven if you charge an extra three or five buckets.
Later, the Li family's output was indeed a lot, but it was still only considered a special case.
But this year, Li Shimin made a lot of trips to Bashang, and the 3,000 acres of rice terraces in Bajiugou could not be faked.
The long ears of rice were heavy.
Today, he also caught fish in the rice field himself, and he was more aware of the growth of rice.
Excluding these terraced fields of the Li family, they are actually the peculiar fact that they are watered.
Not to mention that other places can produce five stones, but even if it is doubled, it is terrifying enough.
Ordinary dry land, fertility is sufficient, seeds are good, coupled with fine farming, the original yield per mu has changed from one stone to two stones The most important thing is that when there is sufficient fertility, the field does not have to be fallow and rotated due to lack of field strength.
Even after planting a season of grain a year, you can also plant some sorghum, soybeans, rape, radishes or something, isn't this also a harvest Guanzhong now has a grain shortage of several million stones a year, if the output of the fields increases, doesn't it mean that Chang'an does not need to count on the transfer of grain from Kanto to the customs in the future, and there is no need to always look at the eyes of those grain merchants If this problem can be solved, this is not just a food problem, this is an important matter related to the strategic security of the entire Chang'an.
"Your Majesty, I have heard that in the south of Lingnan, further south of Vietnam, there is a Champa state.
In the country, there is a kind of rice seed, the ear is long and there is no mang, the grain difference is small, and it is born without choosing the land.
In particular, it is drought-tolerant and has a short growth cycle, and it only takes more than 50 days from planting to harvesting, and the yield is high. ” Li Chao revealed an even more amazing thing to Li Shimin.
"Isn't it the Linyi State that was conquered by the royal capital during the Sui Dynasty," Li Shimin asked.
During the Sui Dynasty, there were Sui generals who led troops to break through the Linyi Kingdom, killed the king, sacked their royal city, and seized countless gold and ivory treasures, but because the soldiers did not accept the local heat and water, most of them died, and finally withdrew.
Li Chao nodded, "The Zhancheng State was built for Zhanwei, and the land of Zhancheng was Xianglin County of Rinan County in the Han Dynasty.
During the Sui period, the Sui generals once broke through the capital of Zhancheng. ” "This Champa country really has such a miraculous rice seed" Li Shimin also knows a little about rice.
In the Sui and Tang dynasties, the planting area of rice was already very large, not only in the south, but also in Henan, Guanzhong, and even Shuofang.
For example, in Weinan in Chang'an, there are many rices, and now there are thousands of acres of rice in Bashang.
No, according to his understanding, rice usually has a production period of about 100 days.
Fifty days of production That's half the time.
"Your Majesty, the weather in the north is cold, and only one crop of rice can be planted, but in the south, the Yangtze River and Huai River basins, and even the Lingnan region further south, the weather is warm.
Even in Lingnan, it is possible to plant for three seasons."
"Two crops, three crops" Even Chen Shuda and Xiao Yu, the two prime ministers who were born in the south, were surprised.
Since the Sui Dynasty, the cultivation of rice has increased, and there are a few excellent straws that are planted for two seasons, but that kind is very rare.
The key is the lack of good rice seeds.
The growth cycle of a season is more than 100 days, that is, three and a half months, and it can only be planted after three and a half months, and after three and a half months, it is almost the end of June or even July.
Plant the second crop before the beginning of autumn, but if it grows for more than three months, it will be too late, and the cold wind and frost will make the rice unable to tassel, and it will freeze to death.
Maybe you can plant two crops in Lingnan, but in the Yangtze River and Huai River basin, you definitely can't plant two crops.
And now in Datang, Lingnan is a wild and undeveloped land, and the Huaihe River basin and the lower reaches of the Yangtze River are considered to be wrongly developed, not even the middle and upper reaches of the Yangtze River, Dabie Mountain, Xiangchu, there are still many barbarians.
Therefore, it can be said that when Li Chaoyi said that there is a new rice variety, the production cycle is only about 50 days, the yield is higher than that of the current rice variety, and it is drought-tolerant and does not choose the land, and so on, Li Shimin and the others were all surprised, and after the surprise, they were all suspicious.
A small country like the Occupy City can have such a good thing "There really is such a rice seed, why haven't I heard of it before?"
In fact, Champa rice is not exactly the rice seed of Champa country, but it should be said that Champa and Zhenla on the Indochina Peninsula are rich in rice, and their rice seeds are naturally cultivated.
Because of the good natural conditions, climate temperature, rain and light, it is very simple for people there to grow rice, and there is no need for any water conservancy and irrigation facilities, nor does it need any preferred seeds, nor does it take such trouble to raise seedlings and transplant them.
They are all extensive farming, the cultivated land is not deep, and the seedlings are not raised.
After planting, anyway, there is no water for drought, no waterlogging is not dredged, there is no dung soil, and there is no cultivation, and it is left to the sky.
However, because the rice varieties are drought and flood tolerant, and the local climate conditions are good, their rice yields are still very good.
"Tyrannical Creatures" Li Shimin listened to Li Chao's story, and after telling the way the people of Zhancheng planted rice, Li Shimin, who was angry, slapped his thigh.
"It's just unreasonable, they plant so blindly, and they still have a good harvest" "Your Majesty, this is a rice seed.
If we have these rice seeds, carry out rice seed optimization, and then raise seedlings, transplant, take care of them, retain water and fertilizer, weed, etc., this yield will be higher. ” Li Shimin stared at Li Chao and asked, "If you grow Zhancheng rice here, can you plant two crops, and how many stone harvests can you get in one season?"
"Your Majesty, the climate here is still not as good as in the Jianghuai region, it is good to plant one season of rice, but it is not good to plant two seasons.
However, if there is Champa rice, it can be planted for two crops, but water cannot.
If there is no water, it is not possible to pump water by drilling wells, and the cost is too high to be cost-effective.
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If you only plant one season, the yield, the increase will not be too much, according to our current intensive farming method, fertilizer and water conservation, one mu is estimated to reach six stone wet valley. ” The roughness rate of rice can generally reach more than 70 percent, and it is necessary to remove deflated seeds, broken leaves, rotten seeds, etc., and finally turn rice into brown rice, and one stone can produce more than seven buckets.
And after the wet valley is dried, it will also reduce a lot.
The moisture content of fresh millet is generally about 20 to 40 percent, and after drying, there will be more than 10 percent.
One stone of millet is dried, and there are generally about eight and a half buckets.
One stone of dry grain can produce about seven buckets of brown rice.
In this way, one stone of fresh grain can eventually produce about six buckets and two brown rice.
If you plant this Zhancheng rice, one mu will yield six stones of wet grain, and eventually you can produce more than three stones and seven buckets of brown rice.
A lot, more than the original lot of land yields more wet valley than one acre of land.
"Your Majesty, if this Zhancheng rice can be introduced, the most important thing is to promote it in the Huaihe River basin and the middle and lower reaches of the Yangtze River, where there are already a lot of rice fields, if you can replant Zhancheng rice, and in places with more water, the implementation of double cropping rice, then the grain output can be greatly increased, and when the time comes, the Jianghuai River Basin, but it is the granary of the Tang Dynasty."
It's a pity that there is no corn, potatoes, and sweet potatoes at this time, otherwise, the grain would have increased greatly.
"You have Zhancheng rice in your hand," Li Shimin looked at Li Chao excitedly.
Li Chao spread his hands.
"There is no occupation of the city in the hands of the ministers."
"Then you know that you know so well about Champa rice" "I heard from a merchant from Lingnan that he once went to Champa to do business."
"Where is this businessman?"
Li Shimin glared at the boss with a pair of eyes, as if he wanted to eat people.
Of course, that businessman didn't exist, it was just an excuse for Li Chao.
But Zhancheng rice does exist, and Li Chao actually arranged for someone to go to Zhancheng last year to look for this kind of rice seed.
It's just that the road is far away, and it's not easy to go back and forth, and it is estimated that I won't be able to come back for a while.
Gao Shilian stood up at this time, "Your Majesty, the minister can guarantee that what Li Pingzhang said is true." ” Li Shimin turned his head and patted his head, "How can I forget, my uncle was once demoted to Vietnam by Emperor Sui, and he was an official there, uncle, there is really this kind of rice in South Vietnam, it is really so amazing" Gao Shilian confirmed that in South Vietnam, this rice is indeed available, but it is very ordinary.
He didn't pay much attention to it before, but when he heard Li Chao say this today, he felt that those ordinary rice were indeed not ordinary everywhere, and they could grow very well if they were cultivated so casually, and they could indeed be harvested in less than two months.
But he is not sure whether this rice can survive in the Central Plains, whether it can also produce such a yield, especially whether it can be planted with double cropping.
"Since there is really this kind of rice, it's good that the rest is left alone, and then we can get the rice seeds back."
Li Shimin is also the kind of person who can't see good things and spends the night at other people's houses.
Two seasons.
Li Chao's terraced rice has a high yield, and it has to rely on fertilizer and intensive cultivation, but with this Zhancheng rice, planting double crops directly in the south has doubled the yield at once.
If intensive cultivation of fertilizer and water conservation is also carried out in the south, does it not mean that the grain output in the south can directly triple?
Three or four stones are harvested in one season, and seven or eight stones are harvested in two seasons If there is such a good paddy field, intensive cultivation, you can harvest five or six stones in one season, and wouldn't you have to harvest eleven or twelve stones in two seasons?
It's exciting to think about.
I have food in my hands, and I don't panic in my heart.
Even the emperor has to worry about food all day long.
"Send someone immediately, immediately, I want to see Champa rice in the shortest possible time."
Li Shimin's face turned red with excitement, and he roared with his fist t1706231537: