Three stages of mulch film development in China
From 1979 to 1984, it was the first stage of the history of China's mulch film development. It was mainly the introduction and experiment stage, with the focus on the introduction and imitation of mulch film products.
The second stage from 1985 to 1992 was mainly the stage of technological improvement, including the planting model, the development of film-covering equipment, and so on. "Achieving mechanized film spreading is a node," Yan Changrong said. "In the mountainous and hilly areas of the southwest and northwest, it is indeed possible to manually spread film. Even now, there are many artificial film spreaders. But in Xinjiang, Northeast and other plains. It can be up to 1,000 meters in length, and it is very difficult to lay the film manually, and the breakthrough of the machine film technology has made it possible to cover a large area of mulch film."
Beginning in 1993 and nearly 20 years thereafter, it can be called the third stage, the technology application stage. "At this stage, the technology of mulching film has been developing rapidly in China. In recent years, the area of crops covered with film has reached nearly 300 million mu, and 75% of the world’s mulching film has been used.
