Why did iron farm tools spread rapidly during the Spring and Autumn Period and the Warring States Period? How is the development of agricultural production in China?

1. Why can iron farm tools be popularized rapidly?

Ans: Due to the development of iron ore and the progress of iron treatment technology, the iron smelting handicraft industry has gradually developed. After the mid-Warring States period, iron farm tools such as shovels, hammers and hoes have been widely used. The extensive use of iron makes it more convenient to cut down trees, build water conservancy projects, reclaim wasteland and intensively cultivate, thus improving agricultural productivity.

2. How did agricultural production develop?

Answer:

(a) Extensive use of iron tools:

Due to the development of iron ore and the progress of iron treatment technology, iron smelting handicraft industry has gradually developed. After the mid-Warring States period, iron farm tools such as shovels, hammers and hoes have been widely used. The extensive use of iron makes it more convenient to cut down trees, build water conservancy projects, reclaim wasteland and intensively cultivate, thus improving agricultural productivity.

(B) the development of irrigation:

During the Spring and Autumn Period and the Warring States Period, all countries attached great importance to water conservancy construction, some built dikes along the river, and some dug canals to build water conservancy projects. In terms of dike construction, large-scale dikes have been built in the Yellow River and Jishui, which can not only prevent floods and protect agricultural production, but also compete with water for farmland and open up cultivated land. In the development of canals and water conservancy projects, at the end of the Spring and Autumn Period, Wu dug a ditch between the Yangtze River and Huaihe River, which was the earliest canal built in history. During the Warring States Period, Ximen Bao in Wei once "diverted the Zhanghe River to control water", and Dujiangyan and Zheng Guoqu projects in Qin also played a great role in irrigation efficiency. One of the reasons why Wei was strong in the early Warring States period and Qin was strong in the later war zone was the development of water conservancy irrigation.

(three) the promotion of Niu Geng and the progress of farming technology:

At first, Lei Lei and other pedal plows were used in the Central Plains. The tiller had to hold Lei Lei's handle with his hand, put his foot on the back of the blade and dig the blade into the soil for provocation. This training method is too hard and the effect is not good. Since the late spring and autumn period, the method of plowing the land with cattle has been invented, which is labor-saving and effective. Coupled with the progress of irrigation and fertilization technology, agricultural output has been greatly improved.

During the Spring and Autumn Period and the Warring States Period, the main food crops were millet, millet, rice and wheat. In addition to the general increase in the output of these crops, sericulture and silk weaving are also quite developed, and the cultivation of lacquer forest and fruit trees is gradually popularized. In addition, books on agricultural production technology appeared at this time, and agricultural scientific knowledge in the Spring and Autumn Period and the Warring States Period was systematized and theorized.