种植中药材对盐碱地的改良效果研究

Soil improvement effects of planting Chinese herbs in saline-alkali soil

以研究中药材对盐碱地的改良效果为目的,通过田间试验,对不同种类中药材处理地的可溶性盐分及盐分离子进行了测定,结果表明:中药材对盐碱地有明显的改良作用,且改良效果与药材种类有关。种植中药材后,土壤中 Na+、Ca2+、Mg2+、SO42-、Cl-及可溶性盐总量明显降低,而K+含量升高,提高了土壤的K+／Na+,使盐碱地得以改良。同时土壤中(K++Na+)／(Ca2++Mg2+)比值下降,有助于土壤胶体的凝聚,有利于土壤团粒结构的形成。种植中药材可使土层平均可溶性盐分降低82％-85％。

The soluble salinity and salt ions of different treatment fields planted with different species of Chinese herb were detected in order to study the improvement effects of botanical herbs on saline-alkalisoil. The results showed that Chinese herbs had significant improvement effects on saline-alkali soil, and the effects related to species of Chinese herbs. After planted, Na^＋, Ca^2＋ , Mg^2＋ , SO4^2- , Cl^- and pH value and soluble salt content decreased obviously, and K^＋ increased , so that K^＋/Na^＋ of soil increased,and the saline-alkali soil were improved. In the same time, （K^＋＋Na^＋ ）/（Ca^2＋ ＋Mg^2＋ ）of soil decreased,and it is helpful to accumulate soil particles together to form soil aggregate structure. Planting Chinese herb could decrease 82%-85 % of average soil soluble salt content in soil layer of 0-80cm.