关键词: 污泥, 污泥, 花生, 土壤, 重金属污染

Abstract: Abstract: A pot experiment using fluvo-aquic soil was conducted to study effects of different rates of pig manure and wheat straw on the plant growth and nutrient uptake of cherry-radish (Raphanus Sativus) and the characteristics of soil fertility. The results showed that the biomass of cherry-radish affected by pig manure in the first harvest was better than that of wheat straw. Moreover, high rate usage of pig manure enhanced plant growth and the concentrations of nitrogen phosphorus and potassium in plant shoots. But wheat straw application lowered the dry weight of plant roots and the concentration of nitrogen in plants. The concentrations of total nitrogen and available potassium in soil were increased by the application of wheat straw. The contents of organic matter, total nitrogen, available phosphorus and available potassium in soil were increased by utilization of pig manure. The addition of pig manure resulted in a reduction of soil pH value, while a rise of soil EC level. The middle and high application rates of wheat straw also lead to an increase of soil EC. The present study suggested that wheat straw application should be combined with certain rates of nitrogen and phosphorus fertilizers to be adjusted a suitable C/N ratio. The available phosphorus concentration in soils would be enhanced by the addition of pig manure.