Effect of Degradable Plastic Film Mulching on Cotton Yield in Yuli County

Nine kinds of biodegradable plastic film and one kind of conventional PE film are used to conduct experiment in the field, and study the effect of degradable plastic film on cotton yield. The results show that there is no difference in cotton yield between Treatment II, III, and ordinary PE film, and other kinds of degradable plastic film significantly reduce yield, with yield reduction of 6.5%-16.7%. The yield differences among treatments are mainly affected by the number of plants harvested