湖州市桑园土壤肥力及重金属含量检测与分析

Detection and Analysis on Soil Fertility and Heavy Metal Content of Mulberry Field in Huzhou City

[目的]为了因地制宜地指导低产桑园改造和测土配方施肥,实现蚕桑生产的可持续发展。[方法]对湖州市的42个有代表性的桑园土壤的养分及重金属含量进行调查分析。[结果]桑园土壤有机质、全氮的含量处于中等水平,平均值分别为16.671、.13 g/kg;速效磷和速效钾的含量较高,分别达到37.951、27.97 mg/kg;有效钙、镁、硫、硅等中量元素及有效铜、锌、铁、锰等微量元素含量丰富,但有效硼、钼含量较低。部分桑园土壤存在酸化趋势和重金属汞含量超标。[结论]该研究为湖州市的蚕桑生产的可持续发展提供了依据。

[Objective] The study aimed to guide the improvement of low-yield mulberry field and formula fertilization by soil test according to local conditions,so as to realize sustainable development of silkworm and mulberry production.[Method] The nutrition and heavy metal contents in the soil of 42 representative mulberry fields in Huzhou city were investigated and analyzed.[Result] The results indicated that the organic matter and total nitrogen contents were at middle level,averaging 16.67 and 1.13 g/kg resp.The quick-acting phosphorous and potassium contents were higher,achieving 37.95,127.97 mg/kg resp..The soil was rich in middle elements such as available Ca,Mg,S,Si and trace elements such as available Cu,Zn,Fe,Mn.But the available B and Mo contents were lower.There existed an acidification trend and the heavy metal（Hg） content exceeded the standard in soil of partial mulberry field.[Conclusion] The research provided a basis for the sustainable development of silkworm and mulberry production in Huzhou city.