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通过两年动态监测和田间试验，研究了苏州市生活污泥的基本性质，及不同用量污泥（０，５．５２，１０．３３．１４．０９ｔ／ｈｍ２·ａ－１，干重）对６茬蔬菜产量、卫生品质、土壤ｐＨ和盐基离子的影响．结果表明：生活污泥有机质及氮、磷含量丰富，有毒重金属含量低，但锌含量较高，未经消化的污泥含较多的病原物．施用污泥明显提高蔬菜产量，但也会提高后茬蔬菜体内锌含量．并会加剧耕层上镶钙、镁淋失．使上壤明显酸化．作者认为菜地大量施用污泥应要严格控制。
Through two years of dynamic monitoring and field experiments, the basic properties of domestic sludge in Suzhou City and the effects of different dosage of sludge (0, 5.52, 10.33.14.09 t / hm2 · a-1, dry weight) 6 crop vegetable yield, health quality, soil pH and salt-based ions. The results showed that the organic matter, nitrogen and phosphorus contents of domestic sewage sludge were rich, the content of toxic heavy metals was low, but the content of zinc was higher, and the undigested sludge contained more pathogens. Sludge application significantly increased vegetable yield, but also increased the zinc content of vegetables after stubble. And will increase the top layer of inlaid calcium, magnesium leaching. So that the soil was acidified. The author believes that large-scale application of sludge in vegetable fields should be strictly controlled.