Why is there fertile paddy soil in the middle and lower reaches of the Yangtze River?

It was the upper reaches of the Yangtze River that brought nutrient-rich soil to form a plain, and then after generations of hard work, people continued to grow rice, and the soil here became more suitable for rice growth.

The southern red soil is mainly due to the humid climate and precipitation, and the loss of nutrients from the soil surface is serious, but it does not mean that the southern red soil is everywhere.

In the south, the natural soil of the mountains and slopes is red soil and red soil, but in the plain agricultural areas, the paddy soil formed due to the long-term influence of human agricultural production is extremely widely distributed.

The Yangtze River is the longest river in China, flowing through 11 provinces and cities, the basin is so wide, it will naturally form a vast and fertile alluvial plain downstream, and the so-called paddy soil can actually be understood as a relatively fertile and moist soil.

Speaking of red soil, in fact, it is mainly distributed in several provinces of Hunan, Hubei, Fujian, Jiangxi and Guangdong, and the soil is sour and slim, and it is planted with camellia.

Paddy soil is not naturally formed, it is turned into paddy soil after long-term cultivation. In the middle and lower reaches of the Yangtze River, the land is flat and the water sources are abundant, which is conducive to rice cultivation and has a long history of farming.

In fact, paddy soil is formed after a long period of reasonable cultivation by people.

The vegetation in the middle and lower reaches of the Yangtze River plain is mostly artificial vegetation, mostly paddy fields. Most of the natural vegetation has been destroyed.

The remaining natural vegetation is mainly evergreen broad-leaved and deciduous broad-leaved mixed forest in the north of the Yangtze River, and evergreen broad-leaved forest in the south.

The soil in the north of the Yangtze River is yellow-brown soil, and the soil in the south of the Yangtze River is red soil.

The middle and lower reaches of the Yangtze River are impact plains, and the soil from the upper reaches of the Yangtze River is washed down and deposited in the estuary area, so the soil is relatively fertile.

Couldn't be more suitable!

China's grain crop producing areas have a pattern of "rice in the south and wheat in the north". The growth of rice needs a lot of water, the middle and lower reaches of the Yangtze River Plain is close to the water source, the latitude is low, the terrain is low and flat, the rainfall is abundant, and the rice in the middle and lower reaches of the Yangtze River Plain can be harvested twice a year or three times a year. In short, it is very suitable for growing rice.

Part of the information** in the compulsory education curriculum standard experimental textbook geography eighth grade next volume, I am a student, typing is not easy to give points!

The nature of the land, the characteristics of the climate, the rain, etc. are determined.