Due to the influence of human factors such as improper agronomic measures,soil acidification in brown soil areas of Liaoning Province is obvious and needs to be controlled by adding amendments.In this study,six common industrial and agricultural production by-products,such as industrial slag(coal gangue and bentonite slag),straw(corn straw and peanut straw)and fungal bran(mushroom bran and golden mushroom bran),were selected as improvers to investigate the effects of industrial and agricultural production by-products on acidified brown soils by using indoor constant temperature incubation method.The results showed that the addition of straw,mushroom bran and industrial waste could improve soil acidity to some extent,and soil pH increased by 0.29-0.79 units;the addition of improvers changed soil net nitrification to different degrees,but the effect was not significant;the addition of improvers effectively enhanced soil phosphatase,sucrase and peroxidase activities.In conclusion,agricultural production by-products are more suitable for the improvement of acidified brown soils.
acidified brown soilimproversnitrificationsoil enzyme activity
万方数据
维普
