Studies On The Practicality Of Planting Sugarcane In Heavy Metals Contaminated Soil

The paper research the characteristics of uptake and accumulation heavy metals of sugarcane with different varieties, remedied soil with lime and intercropping with Mulberry, bean or corn in a field. The Results demonstrated showed:1. With sugarcane growing, the leaves Arsenic(As) and Lead(Pb) content of plant and ratoon cane are increasing more, but stem As content decreasing. The contents of cadmium (Cd) in stem and leaves are increasing. The distribution of As and Pb is:root> leaves> stems, but Cd distribution is:root> stem> leaves.2. The ability of uptake and accumulation different heavy metal have of different varieties of sugarcane is different. In maturity, the varieties of lower leaves As contents are TT25, and YT96/86; the varieties of lower leaves Cd contents are YL17,GT02467and YL18;the varieties of lower leaves Pb contents are YL9, GT02467and YT96/86. The contents of As,Cd and Pb of cane trash are more than juice, with Pb more than20times. The lower trash As content are YT96/86and TT88/99and The lower juice As content are GT02467and YL9. the lower trash and juice Cd content are YL17and YT96/86. the lower trash Pb content are GT02467and YL18, lower juice Pb content are YL17and YT96/86.3. The contents of Pb, As and Cd of stem and Cd of leaf in post-maturity were higher than that in pre-maturity, ratoon were higher than new plant. The contents of Pb and As of leaf in post-maturity were lower than that in pre-maturity, and ratoon lower than new pkant.4. Different planting mode of sugarcane have effect on the capability of absorption and accumulation heavy metals. In sugarcane maturity, stem and leaf the contents of As of treatment of lime and Single planting are less than intercropping treatment. Stem Cd contents of treatment of liming and bean intercropping are less than mulberry intercropping and single.Leaf contents of treatment of liming and single than intercropping. Stem Pb contents of intercropping are less than single and lime. Leaves Pb contents is that single and mulberry intercropping are less than bean intercropping and lime.5. The content of heavy metal in soil affected sugarcane absorbing nutrient elements and sugarcane yield.The higher heavy metal content, the lower nutrient elements content of sugar cane, heavy metals also affect the sugar cane production.To sum up, planting suganrcane is practicality by selecting varieties and continuous new planting.