The effect of fertilizer with different anions on the physiological and chemical characteristics of solar greenhouse soil

The effect of fertilizer with different anions on the physiological and chemical characteristics of solar greenhouse soll are studied．The results show that compared with CK．the fertilizer with N0^-₃、SO^2-₄and Cl can raise the Ec and decrease the pH value of soil．The higher the fertilization level is，the higher the degree of increase or decrease is．The influential sequence on soil is Cl^->S0^2-₄ >N0^-₃ ．Fertilizer with Cl^-iS beneficial to the accumulation of available N，P and K in soil．SO^2-₄ decreases the content of available N．Available Fe content increases with the enhancement of fertilization leve1．the kinds of anion and fertilization level have no effect on the content of available Mn in soil．