Seed cotton pretreatment process
Machine-picked cotton has become the direction of world cotton production progress. About 30% of the world’s cotton is picked by machines. Manually picked cotton contains less external impurities, while mechanically picked cotton contains far more cotton than manual picking and the moisture content of cotton is also larger.
However, the labor consumed by manual picking of cotton accounts for about 50% of the labor consumed in the entire cultivation process. Therefore, major foreign cotton-producing countries have successively switched to mechanical cotton picking by continuously strengthening and gradually improving their cotton pretreatment equipment and processes, and the progress is rapid.
American cotton production is known for its high degree of mechanization and modernization. In 1950, mechanical picking accounted for only 10% of the cotton, but in 1962 it accounted for 70%. By 1972, all cotton picking had been mechanized. The Soviet Union is also a major cotton-producing country in the world. In 1959, mechanical picking accounted for 10%. By 1965, it reached about 50%. It is currently 70%. They also attach great importance to machine-picked cotton finishing technology. In the early 1980s, the Soviet Union had More than 20 units are engaged in research and machinery manufacturing of machine-picked cotton technology.
At present, manual picking of cotton in my country is still the main method, but the popularization of cotton picking by machines is the general trend. China’s Xinjiang Production and Construction Corps is the leader in the development of machine-picked cotton in our country. In 1996, my country’s machine-picked cotton experiment was carried out in the Xinjiang Production and Construction Corps. In 2000, the project was a complete success.
With the popularization of machine-picked cotton, the requirements for cotton pretreatment are getting higher and higher, and the equipment investment ratio of cotton pretreatment units is also increasing. Taking the United States as an example, cotton pretreatment units accounted for only about 10% of the total investment in ginning equipment in 1920 to more than 50% currently. The level of cotton pretreatment equipment and technology depends to a certain extent on the progress of cotton picking mechanization. The two adapt to each other and promote each other.
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