Author: Professor Yan Changrong

Plastic-film mulch in Chinese agriculture: Importance and problems

Liu Shuang,
Liu Qin,
Dr. Liu Enke,
Professor Neil C. Turner,
Dr. He Wenqing,
Professor Yan Changrong
Summary Plastic-film mulch is widely used to increase the productivity of crops, vegetables and fruit trees in cold and arid or semiarid regions of China. Use increased from 6000 t, covering 0.12 million ha, in 1982, to 1.2 million t, covering almost 20 million ha, in 2011. The thin (4-8 µm) polyethylene film used in China is slow to degrade, easily damaged, difficult to reuse for a second season and difficult to remove. Residual plastic in the top 0.3 m soil layer is now estimated …