Two soils(acid and calcareous purple soil)and tomato were used in potexperiements,which were four treatments of chech,dust(33.5g/m2 month),simulatedpH4.0 acid rain, dust combine acid rain, and six or eight repeated for calcareouspurple soil and acid purple soil, respectively. The results suggested that singleacid rain or dust treatment has no harm to the yield of tomato, and that in calca-reous purple soil,the yield of tomato was decreased about 18% by acid rain com-bination with dust,and that in acid purpl...
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