设施栽培土壤中盐分积累的测定

Determination of salt accumulation in facility culturing soil

通过对通辽市农业科学研究院温室土壤进行室内分析,结果表明:(1)通辽市农业科学研究院温室设施栽培土壤普遍存在酸化现象,其中1号温室土壤酸化已接近蔬菜出现生理障碍的临界水平;(2)所调查温室中土壤均呈现出不同程度的盐化现象,积盐分中阳离子以Ca2+为主,而阴离子以SO42-和NO3-为主;1号、4号温室盐化现象严重,其中4号棚中Cl-含量出现异常,可能与长期施用的某种肥料有关。

Chemical content of the soil in greenhouse of Tongliao Research Institute of Agricuhural Sciences was analyzed. The acidification widely existed in facility culturing soil, especially in no. 1 greenhouse the level of soil acidification was closed to the critical level of vegetables physiological barrier. Varying degrees of salinization presented in the greenhouse soil, and the soil salinity mainly included Ca^2＋ and SO4^2-, NO3^-, No. 1 and no. 4 greenhouse salinization were serious, and the content of Cl^- in no. 4 greenhouse was abnormal that might be associated with certain fertilizer which had been used for a long time.