What is the main method of plowing in traditional agriculture in this country? In which period did it begin? This type of farming contributed to the advancement of iron smelting in China, please give

What is the main method of plowing in traditional agriculture in this country? In which period did it begin? This type of farming contributed to the advancement of iron smelting in China, please give some examples.

The main method of plowing in China's traditional agriculture and its development? development? evolution?

Tools for plowing Iron: crank hoe, big sickle

Cattle plowing: coupling plow - one ox pulling the plow - curved plow

Irrigation tools Bailing bucket - -turning carts - Sui, Tang and Five Dynasties standing well waterwheel & high turntable car - Song water turning cart - Ming and Qing wind-powered waterwheel

Water conservancy projects Dujiangyan, Zhengguo canal, Lingqu, well canal, the Yellow River

Organization Individually owned and operated

Changes in materials: stone, bone, wood - bronze - iron;

Changes in power: human power -animal power -natural power;

Changes in types: singularity -diversity;