Where is rice mainly distributed in China?

Southwest China and the Tibetan Plateau. It is located in Yunnan-Guizhou and Qinghai-Tibet Plateau, Eastern Guizhou and Western Hunan Plateau. North China.

It is located in the north of the Qinling Mountains and the Huai River, south of the Great Wall, and east of the Guanzhong Plain, including Beijing, Tianjin, Hebei, Shandong, Henan, and parts of Shanxi, Shaanxi, Jiangsu, and Anhui. Northeast. It is located in the north of the Liaodong Peninsula and the Great Wall, east of the Great Khing'an Mountains, including all of Hei and Ji, most of Liaoning and northeast Inner Mongolia.

Early maturing single-crop rice cropping area in Northeast China. One crop of rice a year. In some areas, rice is rotated with dry crops or green manure in alternate years.

In terms of cultivation, starting from the prevention of low temperature and cold damage, cold-resistant and early-maturing varieties are selected, heat preservation seedlings are used, the planting period is early, the dry breeding and sparse planting cultivation and greenhouse tray seedling mechanical transplanting are implemented, and mechanical harvesting is used in places where conditions permit. There is still a certain area of direct seeding cultivation, forming two major cultivation systems based on seedling transplanting and transplanting, transplanting and direct seeding.

South. It is located in the south of Nanling, the southernmost part of China. It includes the southern part of Fujian, Guangdong, Guizhou and Yunnan, as well as all of Taiwan Province, Hainan Province and Nanhai Zhudao.

Central and East China. It starts from the coast of the East China Sea in the east, reaches the western edge of the Chengdu Plain in the west, connects the Nanling Mountains in the south, and borders the Qinling Mountains and the Huai River in the north. It includes all or most of the 8 provinces (cities) of Jiangsu, Shanghai, Zhejiang, Anhui, Jiangxi, Hunan, Hubei and Sichuan and the southern part of Shaanxi and Henan provinces, which is the largest rice cultivation area in China.

Double single-cropping rice cropping area in central China. In the south of the Yangtze River, it is mostly double-cropping rice triple cropping system or single-cropping rice double-cropping system; The north of the Yangtze River is a single-cropping rice double-cropping system or a two-year five-cropping system. The winter paddy fields in the Sichuan Basin and the Chuandao Basin in southern Shaanxi are planted with only one crop of rice a year.

Cultivation characteristics: In view of the characteristics of the three-cropping system with tight seasons and many natural disasters, a series of technical measures to alleviate seasonal contradictions and prevent natural disasters are adopted, including reasonable matching of varieties, timely sowing, cultivation of strong seedlings, combined with the application of nitrogen, phosphorus and potassium fertilizer, ear and grain fertilizer, application of micro fertilizer, combination of water layer, moist and shelving (baked field, sun-dried field), etc. The research and popularization of high-yield cultivation technology has developed from model cultivation to the construction of tons of grain fields.

In recent years, light and simple cultivation techniques such as dry seedling raising, direct seeding, seedling throwing, and less no-tillage have been promoted.

Single-crop rice cropping area in North China. The planting system in the North China Plain is one crop of rice a year, or two crops of rice in one year, or three crops in two years (of which one or two crops of rice) are planted together. The Huang-Huai-Hai Plain generally ripens rice once a year. In view of the lack of water resources and the characteristics of susceptibility to low temperature hazards in the later growth stage, dry rice planting, dry seedling raising and other water-saving technologies are adopted, and at the same time, the summer light and temperature conditions are fully utilized to strengthen management and prevent cold damage.

Single-cropping rice cropping area in the dry region of Northwest China. One crop of rice a year. In some places, there is a rotation of water and drought crops in alternate years.

In southern Xinjiang, where the conditions of water, fertilizer and labor and animal power are good, wheat and rice are harvested twice a year. Cultivation characteristics: water is used to determine rice, saving water; Transplanting and live broadcast coexist, and there are various ways of live broadcasting; Rice planting is mainly based on the main stem and panicle, and the density is high. Fourth, the combination of rice planting and the treatment of saline-alkali land, using rice to control waterlogging and rice to control alkali.

Single-cropping and double-cropping rice cropping area in the southwest plateau. It is mainly based on single-cropping rice double cropping system. In areas with good hydrothermal conditions, double cropping rice is planted, or mixed medium rice and regenerated rice is retained.

Winter paddy fields and winter kang fields are planted with only one crop of medium rice a year. In cultivation, varieties and types should be arranged according to different altitudes. In recent years, the implementation of hybrid rice varieties, thermal insulation and seedling raising, standardized planting, formula fertilization, comprehensive control of diseases and insects, dry seedling raising, and seedling throwing technology have outstanding advantages, and the promotion area has been expanding year by year.

The area of winter paddy field in this area is large, and semi-arid cultivation has obvious effect on changing the late onset or stiff seedlings of rice in cold-soaked field.

Double cropping rice cropping area in South China. The double-cropping rice and three-cropping system are the mainstay, and in some places, the one-season rice is combined with two-season dry farming or one season of dry farming. There is also a water-to-dry rotation of rice and dry farming during the dry farming years.

In terms of cultivation, it is required that the ripening system, seedling raising, varieties, and growth period should be adjusted and laid out in accordance with the principle of avoiding spring, autumn cold, typhoon and heavy rain, so as to seek advantages and avoid disadvantages; In recent years, the cultivation management technology has developed in the direction of technology development per ton of grain field and high-yield standardized cultivation of hybrid rice, and in recent years, it has focused on the implementation of technologies such as dry breeding and sparse planting, seedling throwing, and no-tillage seedling throwing.

1. Rice in Northeast China is mainly concentrated along the Yanji, Songhua and Liaohe rivers in Jilin;

2. North China is mainly concentrated in Hebei, Shandong, Henan provinces and the banks of rivers and low-lying areas in northern Anhui;

3. Northwest China is mainly distributed in the Fenwei Plain, Hetao Plain, Yinchuan Plain, Hexi Corridor, and some oasis areas in Biqian Xinjiang.

The concentrated rice production areas in China are mainly in the north, that is, the vast area north of the Qinling-Huaihe River, which mainly belongs to the single-season japonica rice scattered area. The sown area of rice scattered production areas in northern China accounts for about 5% of the national area, and has the characteristics of large dispersion and small concentration.

1. The main producing areas of rice are: 1. South China, Taiwan, China; 2. Japan, the Korean Peninsula, Southeast Asia, South Asia, the Mediterranean coast, the southeastern United States, Central America, Oceania and parts of Africa; 3. Rice is also cultivated in riverside areas in northern China.

2. The main producing areas of rice in China: 1. The double cropping rice cultivation area in South China is located in the south of Nanling, the southernmost part of China. It includes the southern part of Fujian, Guangdong, Guizhou and Yunnan, as well as all of Taiwan Province, Hainan Province and Nanhai Zhudao. 2. Central China Double Cropping Rice Cultivation Area, which starts from the coast of the East China Sea in the east, reaches the western edge of the Chengdu Plain in the west, connects Nanling in the south, and borders the Qinling Mountains and Huaihe River in the north. 3. The Southwest Plateau single and double cropping rice cropping area is located in the Yunnan-Guizhou and Qinghai-Tibet Jiaochi Plateau, and the eastern and western Hunan Plateaus; 4. The single-crop rice cultivation area in North China is located in the Qinling Mountains.

We mainly have the following major rice areas: 1. The South China rice cultivation area is located in the south of Nanling, the southernmost part of China, including the southern part of Fujian, Guangdong, Guangxi, and Yunnan, as well as all of Taiwan Province, Hainan Province and Nanhai Zhudao, and the rice area accounts for the whole country. 2. The rice cultivation area in Central China starts from the coast of the East China Sea in the east, reaches the western edge of the Chengdu Plain in the west, connects Nanling in the south, and borders the Qinling Mountains and Huaihe River in the north, including all or most of the 8 provinces (cities) of Jiangsu, Shanghai, Zhejiang, Anhui, Jiangxi, Hunan, Hubei and Sichuan and the southern part of Shaanxi Province, accounting for 67% of the national rice area.

3. The southwest rice cropping area is located in the Yunnan-Guizhou and Qinghai-Tibet Plateaus, and the rice area accounts for 8% of the country. 4. The rice cultivation area of North China is located in the north of the Qinling Mountains and the Huai River, south of the Great Wall and east of the Guanzhong Plain, including Beijing, Tianjin, Hebei, Shandong, Henan and parts of Shanxi, Shaanxi, Jiangsu and Anhui, and the rice area accounts for only 3% of the country. 5. The single-cropping rice in Northeast China is located in the north of the Liaodong Peninsula and the Great Wall in the macro belt, east of the Daxing'an Mountains and northeast of Inner Mongolia, and the rice area accounts for only 3% of the country.

6. The northwest dry area is located in the west of the Daxing'an Mountains, north of the Great Wall, the Qilian Mountains and the Qinghai-Tibet Plateau, and the marginal areas of the Yinchuan Plain, the Hetao Plain and the northern and southern basins of the Tianshan Mountains are the main rice areas, and the rice area only accounts for the whole country.