EFFECTS OF RE-USED PLASTIC FILM MULCHING ON SOIL CATALASE ACTIVITY
Aiming at reducing agricultural pollution caused by plastic film,the effects of re-used plastic film mulching on soil catalase activity were studied through comparing with the plastic film and open field in Hetao region.The results showed:Soil catalase activity of re-used film mulching increased at different degree.Compared with bare field and new film mulching,soil catalase activity in 0-40 cm of re-used film were higher significantly 4.2％ and 2.6％ respectively.Growth stage changes of soil invertase catalase activity are different.Soi1 catalase activity was fluctuating decline effecting by irrigation,and with a minimum in squaring.Vertical changes of the soil catalase activity are reduced with increasing soil depth,but more stable activity in plough layer(0-20cm).So the findings indicated re-used film could also enhance soil catalase activity though improved farmland ecological microenvironment.
Re-used plastic film mulchingsunflowersoil catalase activity
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万方数据
维普
