The country was the first to grow two crops, iridium and rice。
Zirconium: it's also called a grain, and it's called millet, and it started growing in the country during the time of its original inhabitants. Cultivated mainly in the north and matured mostly in the autumn, when the harvest was tanned and hulled。
Rice: the time of the river's inhabitants has been cultivated, and it has been in its history for 7,000 years, and is now the staple food for half of the world's population. In my country, where the north-eastern region, the yangtze basin, is the main rice-producing area, our scientist, yuan yongping, has made a huge contribution to rice production and has been hailed as the father of hybrid rice。
I. What were the first crops planted in the country
One, tungsten
(1) as a grain, also known as the valley, it is one of the first crops to be cultivated in our country, which began to grow in the first half of the slope。
(2) when the shell is removed, it is the rice that is common in our lives, mostly grown in the north, and matures in the autumn, when it can be collected and tanned in the sun and then boiled。
Rice
(1) rice, which was also the first to be cultivated by our people, has been grown as early as the time of the river's inhabitants, and is still an indispensable food in people's lives. Half of the world's population is now based on rice, which is grown for 7,000 years and has a long history。
(2) our rice, which is mainly produced in the north-east and in the yangtze basin, and which is not only a food crop but also a direct cash crop, but also a staple food in our north-east region and in the south, is very much contributed to the rice by our scientist, yuan ryuping, who is known as the father of mixed rice。
Ii. Crop cooked in the country
1 temperature
It consists mainly of northern heilongjiang province and north-eastern inner mongolia, which are well-cooked and require a temperature of < 1600°c, with the main crops being spring wheat, barley, potatoes, etc。
Temperature zone
The main crops are sorghum, spring wheat, maize, cereals, soybeans, etc。
3. Warm temperate
Mainly covering most of the central and downstream parts of the yellow river, the southern part of xinjiang, is three years or two years, requiring a temperature of 3,400-4,500°c, with the main crops being winter wheat, replanting wheat, sweet potatoes, maize, cereals, etc。
4. Subtropical
The main ones are qinqing, south of wei river and east of the tibetan plateau, which is two to three years old and requires a temperature of 4,500 to 8,000°c. The main crops are rice, wheat, oil and vegetables。
5. Tropical
It consists mainly of the prefectures of phi, peng, taisun and hainan, which are three years old and require a temperature of >8,000°c, with the main crop being sugar cane。
