The field experiment was conducted to study the effects of different nitrogen application rates(conventional N fertilization,conventional 1/3,conventional 1/2,and conventional 2/3)on the yield and soil chemical properties in old strain pruning technology of tomato(Solanum lycopersicum L.)inter-cropped with bean under plastic shade.The results showed that reducing N fertilization in moderate scale would not affect tomato yield.And this cultivation model could obviously increase the contents of NH_4~+-N and N...