论文部分内容阅读
在土培条件下,模拟受三价铬(Cr)污染程度不同的土壤,研究了水稻一大麦(简称水旱轮作)与玉米一大麦(简称旱作连作)两种耕作制度对改良铬污染土壤的效果。结果表明,在Cr污染土壤上,无论从作物减产的临界浓度。作物体内铬残留量及作物收获后土壤有效铬含量,水旱轮作均优于旱作连作。初步提出选种适宜作物,实行水早轮作是轻度三价铬污染土壤上一项有效的生物改良措施。
Under the conditions of soil culture, the soil polluted by trivalent chromium (Cr) was simulated and the effects of two tillage systems including rice and barley (continuous cropping with water and drywheat) and corn-barley Effect. The results show that in Cr-contaminated soils, no matter from the critical cut-off concentration of crops. Chromium residues in crops and soil after harvest of available chromium content, rotation and precipitation are better than the dry continuous cropping. The preliminary selection of suitable crops, the implementation of early rotation of water is a trivalent chromium contaminated soil an effective biological improvement measures.