| Copper is one of the main heavy metal pollutants in farmland in Jiangxi Province. In order to reduce and control the harm of copper to rice growth and improve the yield and quality of rice, the effect of sulfur and silicon on the forms of soil copper and absorption of copper in rice were conducted by means of pot experiment. The treatments included different amounts of sulfur（0, 30, 60, and 90 kg·hm-2）and silicon（0, 0.5, 1.0, and 1.5 g·kg-1）.The results showed that（1）Application sulfur or silicon fertilizer could significantly decrease the soil acid-extractable and increase residual fraction copper content, while organic matter fraction copper content and the soil oxidizable fraction content varied with the amount of sulfur or silicon fertilizer in copper contaminated field; （2）sulfur or silicon can reduce the uptake of Cu by increasing the copper accumulation in the root of rice or decreasing the available forms of Cu in soil. In conclusion, it was more suitable with the sulfur content of 30 kg·hm-2 combination with the silicon content of 1.0 g·kg-1 to production when considered the influence of the copper content on brown rice and yield of rice. |
