What replaced slash-and-burn

1. Seven or eight thousand years ago, the appearance and widespread use of Lei and Hook indicated that China agriculture had entered the stage of using stone tools to cultivate land or hoe land.

2. During the Shang and Zhou Dynasties, a small number of bronze farm tools and intertillage farm tools appeared, and techniques such as furrow irrigation, weeding and soil cultivation, green manure retting and pest control were mastered. Agricultural production has been developed.

3. Iron farm tools and Niu Geng appeared in the Spring and Autumn Period, which gained popularity in the Warring States Period. Since then, the iron plow Niu Geng has become the main farming method of Chinese traditional agriculture, and slash-and-burn cultivation has been completely replaced.

4. Slash-and-burn is the remaining agricultural management mode in Neolithic Age. Also known as migration agriculture, it is a primitive barren farming system. The remaining agricultural management mode in the Neolithic Age belongs to the primitive barren farming system.

Historical origin:

Due to extensive management, the yield per mu is only about 50 kilograms, commonly known as "planting a slope and harvesting a radish". ? As early as 5000 BC to 3000 BC, millet and millet were planted in Yangshao cultural area in the middle reaches of the Yellow River by slash-and-burn cultivation and land reclamation. Yunnan also used this method to grow rice as early as the Neolithic Age1260 ~100 BC. ?

During the Warring States period, slash-and-burn farming methods were widely used by indigenous people in Yunnan. After BC 1 century, slash-and-burn cultivation gradually decreased in the central and western Yunnan, but it still remained in remote mountainous areas.

With the evolution of production tools from stone knives, chisels, axes and sticks to iron knives, hoes and plows, the cultivated crops have developed from single rice to cash crops such as rice, corn, beans, miscellaneous grains and even sugarcane and oil crops, and the farming methods have also developed from slash-and-burn and abandoned land to crop rotation, crop rotation and multiple cropping. ?

Since 1978, the original slash-and-burn mode of production has been basically abolished in frontier ethnic areas and remote mountainous areas because of increasing agricultural investment, building irrigation and water conservancy projects, implementing fixed cultivated land and prohibiting deforestation for land reclamation.