苏州河底泥农田应用的试验研究

Study on the Use of Sediment of Suzhou River in Agriculture

采用盆栽与田间试验,研究了苏州河底泥对水稻、小麦、菠菜、芹菜、青菜和土豆等生长发育和重金属残留的影响。结果表明,作物的生长发育和产量与底泥施用量一般呈正相关,而作物体中Cd、Zn等含量与底泥用量和质量有关,但远低于本市主要重金属污染区的调查值和有关食品卫生标准。土壤中重金属含量在底泥施入后有所增加。

Effects of using sediment of Suzhou River in Shanghai on growth and heavy metals residue in rice, wheat, spinach, celery, Chinese cabbage and potato were studied by the methods of pot and field test. The results showed that growth and yield of crops were generaly correlated with the quantity of sediment used. The content of Cd and Zn in crops were related with content of heavy metals and quantity of sediment used, but much lower than that of in main heavy metal polluted region investigated in Shanghai and relative food sanitation standard. Haavy metal content in soil was slight increased after using sediment on farm land.