ABSTRACT
Explore the effects of rape, rice, corn, and wheat straw on the Mn, B, and Fe content of Amygdalus davidiana seedlings. The A. davidiana seedlings were used as test materials, and 6–8 true leaves were transplanted into basins containing different straws to determine the Mn, B, and Fe contents of the A. davidiana seedlings. Wheat straw and corn straw significantly increased the Mn content in the roots, stems, and leaves of A. davidiana seedlings, while rape straw and rice straw reduced the Mn content of A. davidiana seedlings. Four kinds of straw (rape, rice, wheat, corn) were used to treat the A. davidiana seedlings so that the B content in the roots, stems, and leaves was lower than the control in varying degrees. Four kinds of straw increased the Fe content in the roots of A. davidiana seedlings. Only wheat straw increased the Fe content in the stems of A. davidiana seedlings. Rice straw and rape straw significantly increased the Fe content in the leaves of A. davidiana seedlings, the Fe content in the leaves of A. davidiana seedlings treated with wheat straw and corn straw was significantly lower than that of the control. This provides an important theoretical basis for returning straw to the field to increase trace elements in plants.
