The invention discloses a method for governing and improving soda
saline and alkaline land through
magnet tailing composite modifying agents.
Tourmaline powder is accommodated in multiple-hole small cloth bags connected to a long
rope and is evenly scattered onto a
paddy field surface to make the
paddy field surface make sufficient contact with tourmalines, water is completely drained after 4-5 days of field soaking,
fresh water is supplemented, soaking is carried out 4-5 days, water is drained, salt leaching is carried out, and the modifying agents are applied, wherein the modifying agents are formed by mixing
magnet tailing
powder, fermented
organic fertilizer and
furfural residue; water filling, field harrowing, mud making and
transplanting are carried out, and conventional rice cultivation technological management is carried out. The tourmalines are utilized to improve the salt leaching effect and quickly reducing
salinity, and water drainage and salt leaching carried out before
transplanting is carried out on the soda
saline and alkaline land aim to quickly reduce
salinity. Because
saline-
alkali soil is covered with the
magnet tailing
powder, physical properties of the soil can be changed, rain can more easily infiltrate downwards, surface soil salt can be leached, soil becomes rough in texture, and salt and alkali
recovery is prevented. A drip line rises, water can not arrive at the ground directly easily, and salt is prevented from accumulating towards the
earth surface. Poor physical characteristics like coldness, poor permeability and adhesion of alkali land are improved, less salt can rise, the soil is loosened, the saline and alkaline land is well improved, and secondary salinization is avoided.